Dsp thrissur ch3

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District Spatial Plan - Thrissur POPULATION 23

Chapter – 3
POPULATION

The Population parameter serves as the base in 1% of the total area of India, it contains about 3% of the
all the development endeavors. One of the objectives country’s population.
of all sorts of planning is to provide maximum good to
The total population of Thrissur district as per
maximum number of people. Hence it is imperative to
2001 census is 2974232, which is 9.34% of the total popu-
analyze the population by studying the following pa-
lation of the State. Area wise Thrissur district contrib-
rameters - size of population, its growth trends, popu-
ute 7.8% of the state area. The total number of male
lation density, population concentration pattern, mi-
and female population in Thrissur district is 1422052
gration details and population projection – which are
and 1552180 respectively. The District is placed in the
described in this chapter.
4th position as far as population size is considered.
3.1 POPULATION SIZE The population comparison with the state is given
As per 2001 census, the population of Kerala is in Table 3.1. From the table it is clear that the total ur-
31841374 persons which included 15468614 males and ban population of Thrissur district is 10.15% of that of
1,63,72,760 females. Although Kerala accounts for only State and the rural population is 9.06% that of State.

Table 3.1: Population – Comparison with the State
Description Kerala Thrissur % w.r t. Kerala

Total Population 31841374 2974232 9.34
Males 15468614 1422052 9.19
Females 16372760 1552180 9.48
Urban Population 8266925 839433 10.15
Males 4017332 403737 10.05
Females 4249593 435696 10.25
Rural Population 23574449 2134799 9.06
Males 11451282 1018315 8.89
Females 12123167 1116484 9.21

Source: Census 2001

Department of Town & Country Planning, Kerala

24 POPULATION District Spatial Plan - Thrissur

A comparison of total population of the districts rounding districts, Thrissur is placed in the third posi-
surrounding Thrissur district is shown in Figure 3.1. tion in population size. The population size of
Malappuram and Ernakulam districts are higher than
The figure shows that when compared to the sur-
that of Thrissur.

Fig 3.1: Population size - Comparison with surrounding districts

Source: Census 2001

Fig 3.2: Population – Urban & Rural - Comparison with surrounding districts


According to 2001 census, the total
urban population of Thrissur district is
839433 which is 28% of the total popula-
tion of the district. A comparison of per-
centage of urban and rural population of
Thrissur district with surrounding districts
is shown in Figure 3.2.
It is clear that urban population of

Source: Census 2001
Thrissur district (28%) is more than that of
Malappuram and Palakkad district and less
than that of Ernakulam district (48%).
Thrissur comes in the 2nd place among the
surrounding districts.
Fig 3.3: Population size of State - Temporal Variation
The decadal variation in the size of
population of the State over the last three
decades is shown in Figure 3.3. 27 lakhs indicating a decline in the population growth
From the figure, it is clear that though there is an rate of the state.
increase of about 36 lakhs population from 1981 to 1991, The decadal variation in the size of population of
the increase of population over the last decade is only the District over the last three decades is shown in Fig-

Fig 3.4: Population size of Thrissur - Temporal Variation



ure 3.4. 3.2 GROWTH RATE OF POPULATION
From the figure, it is clear that though there is an The growth rate of population among the districts
increase of about 3 lakhs population per decade from of Kerala during 1981-91 and 1991-2001 is shown in Fig-
1981 to 1991, the increase of population over the last ure 3.5. and the details are given in Table 3.2. Among
decade is only 2.4 lakhs indicating a decline in the popu- the districts, Malappuram has the highest growth rate
lation growth rate of the district. of population of 17.22% and Pathanamthitta has the
lowest growth rate of population of 3.72%. All districts
The total Population is increasing during 1981 -
in Kerala shows a decrease in decadal growth rate dur-
2001 period both in Kerala and Thrissur. But the per-
ing 1991-2001 compared to 1981-1991 decade. The
centage of increase in population is decreasing both in
northern districts (Malappuram, Wayanad, Kasaragode,
Kerala and Thrissur District during the same period. It
Kozhikkode and Palakkad) show higher population
clearly indicates that Thrissur district also follows the
growth rate in 1991 and 2001.
same growth pattern as that of State.

Table 3.2: Population and Growth rate of Population Districts wise

Population Growth Rate (G.R)
No District
1991 2001 1981-91 1991-2001
1 Malappuram 3096330 3625471 28.87 17.22
2 Wayanad 672128 780619 21.32 17.04
3 Kasargod 1071508 1204078 22.78 12.3
4 Kozhikode 2619941 2879131 16.69 9.87
5 Palakkad 2382235 2617482 16.52 9.86
6 Thiruvananthapuram 2946650 3234356 13.5 9.78
7 Ernakulam 2817236 3105798 11.42 9.09
8 Thrissur 2737311 2974232 12.2 8.66
9 Kollam 2407566 2585208 10.68 7.33
10 Kannur 2251727 2408956 16.63 7.13
11 Idukki 1078066 1129221 10.45 6.96
12 Kottayam 1828271 1953646 7.71 6.76
13 Alappuzha 2001217 2109160 7.28 5.21
14 Pathanamthitta 1188332 1234016 5.6 3.72
Kerala 29098518 31841374 14.32 9.42
Source: Census 2001



N

Legend
Legend
Population growth rate 1991-2001

<7.00
Legend 7.01 - 14.00
Legend
Population growth rate 1981-91 14.01 - 21.00
21.01 - 28.00
<7.00 >28.00
7.01 - 14.00
14.01 - 21.00
21.01 - 28.00
>28.00

Fig 3.5: District wise distribution of population growth rate 1981-91 and 1991 - 2001

Decadal growth rate of population of Thrissur dis- parison of growth rate of population of district with the
trict is 8.66% as per 2001 census which is less than the state is shown in Fig 3.6.
average growth rate of 9.42% of the State. The com-

G.R. 2001 - Comparison with State
G.R

Source: Census 2001

Fig 3.6: Population growth rate comparison with State - 2001 census



Comparing Thrissur
district with surrounding
districts, Thrissur shows a Growth Rate of Population - 2001 Census
lower growth rate. And it is
shown in Fig.3.7.
The temporal varia-
tion of the population
growth rate of the district
and its comparison with
the State figures are shown
in Figure 3.8 and the details
are given in Table 3.3. The
figure shows that the popu-
lation growth rate of the
district as well as that of Source: Census 2001
state is declining.
Fig 3.7: Population growth rate comparison with surrounding districts

Table 3.3: Growth rate of Population – Comparison with State

G.R 1971-1981 1981-91 1991-01

Kerala 19.24 14.32 9.42
Thrissur 14.64 12.2 8.66
Source: Census 2001

The spatial distribution of the growth rate of connected with higher order road network.
population during last three decades is shown in figure
During 1971-81, the growth rates of population
3.9, figure 3.10 and figure 3.11. From the figures, it is
of most of the LSGs of the district was in the range 15-
clear that the growth rates of population of most of the
20% (figure 4.9). Kodungallur Municipal council showed
LSGs of the district are declining from 1981 to 2001. But
highest growth rate (31.33%) and Irinjalakkuda munici-
the population growth rate of Irinjalakkuda Municipal
pal council (2.72%) showed lowest growth rate.
Council, Thrissur Municipal Corporation and the Grama
Panchayats of Adat, Arimpur, Avinissery, Kaiparamba, During 1981-91, the growth rate pattern has
Kolazhi, Madakkathara, Mulamku-nnathukkavu, widely changed. From Fig. 3.10, we can see a sudden
Mundathikode, Puthur are showing increasing trend decrease in the pattern of growth rate. Growth rates of
from 1981 to 2001. (See fig 3.12).This may be due to population of most of the LSGs were in the range 10-
large increase in the population during 1981 - 2001 in 15%. High growth rate of Population in coastal region
that area and also due to the spatial location of these during the period (in the range 15-20%) shows the
LSGs. The analysis of spatial location of these LSGs strength of the economic base once existed in there.
shows that they are either urban or located nearby by But during 1991-2001, growth rate of population in
the urban areas. Moreover most of these LSGs are well coastal region is decreased. This in turn indicates the



Source: Census 2001

Fig 3.8: Population growth rate - comparison with State - Temporal Variation

Fig 3.9: Population growth rate 1971-81 LSGs Wise



Fig 3.10: Population growth rate 1991- Local body wise

weakening of the economic base of this area. migrants to the urban areas and settle down the near
by Grama Panchayat. Fig. 3.13. shows distribution of
Puthur Grama Panchayat shows highest growth
LSGs with highest growth rate of population.
rate (24.14) and Athirapilly Grama Panchayat (1.20)
shows lowest growth rate of population in 1991. At the same time, three Grama Panchayats
(Chowannur, Manalur, and Nadathara) show negative
The spatial distribution of the growth rates of
population growth rate while comparing the popula-
population during 2001 shows a definite spatial pat-
tion figures corresponding to 1991 census and 2001 cen-
tern and it is shown in Figure 3.11. The coastal region
sus without considering the change in geographical area
shows a growth rate of 5-10%, whereas the central re-
of the LSGs.
gion shows a population growth rate of 10 to 15%.
Kolazhy Grama Panchayat shows highest growth rate The spatial location of these Grama Panchayats
and Chowannur Grama Panchayat shows lowest growth is shown in fig 3.14. But while comparing the area of
rate. the Grama Panchayat, it can be seen that out of the
three Grama Panchayat Chowannoor and Nadathara
The growth rate of population in the LSGs adja-
shows decrease in the area due to merging of part of
cent to the urban LSGs (especially Thrissur Municipal
the area with neighbouring Municipal Council / Munici-
Corporation, Chavakkad Municipal Council,
pal Corporation. Hence the total population figure of
Kunnamkulam Municipal Council and Guruvayur
these Grama Panchayat shows a decrease during the
Muncipal Council) shows higher growth rate indicating
period 1991-2001. The area and population variation is
possibility of out migration from the urban areas to the
given in table 3.4.
immediate hinter land as well as the possibility of im-



Fig 3.11: Population growth rate 2001- LSGs wise

Fig 3.12: LSGs showing increase of G.R from 1981-2001



Table 3.4: Population & Area Details of Grama Panchayats showing negative growth rate during
1991-2001

Population Area
Name of LSG Difference in Difference in
1991 2001 Population 1991 2001 area

1 Chowannur 25496 15426 10070 18.39 13.7 4.69
2 Manalur 31230 31179 51 18.22 18.12 0.10
3 Nadathara 31857 27459 4398 20.91 17.22 3.69
Source: Census 2001

Map Generated for IDDP by TCPD, Thrissur Unit

Fig 3.13: LSGs with highest Growth rate of population
Table 3.5:Interpolated population and corresponding growthrate of Grama Panchayats showing
negative growth rate due to change in area
Population
No. Name of LSG 1991(correspond to 2001Area) 2001 GR
1 Chowannur 15226 15426 1.31
2 Nadathara 26235 27459 4.66
Source: Census 2001



Map Generated for IDDP by TCPD, Thrissur Unit

Fig 3.14: LSGs with negative growth rate based on 1991-2001census of population

Area of Chowannur and Nadathara Grama capita costs of supply of public goods and services.
Panchayats is reduced in 2001 when compared with
Gross population density and net population
1991. It is due to the merging of some wards of
density of the district are analyzed. Gross population
Chowannur Grama Panchayat with Kunnamkulam Mu-
density is calculated by dividing the total population
nicipal Council and that of Nadathara Grama Panchayat
with the geographical area, whereas the net popula-
with Thrissur Municipal Corporation. Table 3.5 shows
tion density is calculated by dividing the total popula-
the details of growth rate in these Grama Panchayats
tion with the net area which is calculated by subtract-
based on interpolation of population of 1991, corre-
ing the un-inhabitable areas like water body, forest,
sponding to the 2001 area. This shows that the Grama
paddy, rubber plantation, marshy and wasteland etc.
Panchayats chowannur and Nadathara also has positive
from the geographical area.
growth rate of population. Hence the negative growth
rate exhibited by these Grama Panchayats are ex- 3.3.1 GROSS POPULATION DENSITY
plained. The modified growth rate of above Grama As per 2001 Census, the density of population for
Panchayat is shown in Fig 3.15. However Manaloor India as a whole is 324 persons per sq. km. where as in
Grama Panchayat shows a slight decrease in the abso- Kerala it is 819 persons per sq. km. Among the Indian
lute population (only 51 persons ) and hence shows a States, Kerala is in third position in respect of density,
negative growth rate. the first being West Bengal with a density of 904 per-
sons per sq.km.
3.3 POPULATION DENSITY
Higher population density puts greater pressure A comparison of the gross population density
on infrastructure and environment but reduces the per among the districts in the State in 1991 and 2001 is



shown in Figure 3.15. tricts the gross population density increases during
1991-2001. The coastal districts show higher gross popu-
Among the Districts in Kerala, Alappuzha has the
lation density in 1991 as well as in 2001. Thrissur district
highest density with 1489 persons per sq. km and Idukki
comes under 7th place.
has the lowest density with 252 persons per sq. km ac-
cording to 2001census. Eight districts have densities The gross population density of Thrissur district
higher than the State average and the remaining six is 981 pp.sq. km. which is higher than the state average
districts have densities lower than the State average. of 819 pp sq. km. The comparison of the population
density with the state is shown in Fig. 3.16.
It can be seen that, except in the Southern dis-

Thrissur Thrissur

Fig 3.15: District wise distribution of Gross density of population growth rate

Fig 3.16: Population density - comparison with State (2001)

The comparison of the population density with those of Ernakulam and Malappuram and greater than
the surrounding districts is shown in Figure 3.17. The that of Palakkad district.
gross population density of Thrissur district is less than

Source: Census 2001

Fig 3.17: Population density - comparison with surrounding districts (2001)

Fig 3.18: Gross Population density 2001- LSG wise



The LSGs wise distribution of the gross popula- less than 750 persons per sq. km. The gross population
tion density of Thrissur district is shown in Fig. 3.18. It density is maximum in Thrissur Municipal Corporation
shows a clear distinction between the gross popula- which is located in central region. All the Municipal
tion density in the coastal region, central region and Council and area near to Thrissur Municipal Corpora-
the eastern high land regions of the district. The gross tion also shows higher gross population density. This
population density of the Grama Panchayats in the may be due to the educational, medical and infrastruc-
coastal belt are the highest (in the range of 1500-3200 ture facilities available in the urban areas of the dis-
persons per sq. km. ), whereas the gross population trict.
density of the central region is in the range of 750 - 1500
Based on the range of population density, LSGs
persons per sq. km. and that of the eastern hill region is
of the district can be grouped as given in Table 3.6.

Table 3.6: Grouping of LSGs based on the range of gross population density 2001

Sl.No. Name of Local Government Range of Gross population density
(ppn/sq.km)

1 Thrissur Muncipal Corporation
>3000
2 Methala

3 Chavakkad Municipal Council

4 Guruvayur Municipal Council

5 Eriyad

6 Edavilangu 2250-3000
7 Irinjalakkuda Municipal Council

8 Avinissery

9 Kadapuram

10 Kaipamangalam

11 Orumanayur

12 Thalikulam

13 Vadanappilly

14 Nattika
1500-2250
15 Pookode
16 Perinjanam
17 Pavaratty


18 Valappad

19 Mathilakam

20 Punnayur

21 Kodungallur Municipal Council

22 Chalakkudy Municipal Council

23 Sreenarayanapuram

24 Thaikkad

25 Nenmanikkara

26 Vadakkekad

27 Vallachira
1500-2250
28 Cherpu

29 Esdathiruthy

30 Manalur

31 Punnayurkulam

32 Kolazhy

33 Thanniyam

34 Anthikkad

35 Nadathara

36 Chowannur

37 Kandanissery

38 Elavally

39 Kunnamkulam Municipal Council

40 Kattur

41 Engandiyur

42 Choondal
750 - 1500
43 Kattakampal

44 Pudukkad



45 Alagappanagar

46 Porathissery

47 Kodakara

48 Koratty
49 Parappukkara
50 Kaiparamba
51 Vellangallur
52 Kadukkutty
53 Paralam
54 Venkitangu
55 Arimpur
56 Adat 750 - 1500
57 Vallatholenagar
58 Alur
59 Mullassery
60 Mala
61 Melur
62 Karalam
63 Kadavallur
64 Annamanada
65 Chazhur
66 Poyya
67 Wadakkanchery
68 Avanur
69 Mundathikode
70 Poomangalam
71 Porkulam
72 Thrikkur
73 Kuzhur
74 Velukkara
75 Madakkathara


76 Tholur
77 Padiyur
78 Puthenchira
79 Kadangode
80 Erumapetty
81 Velur
82 Mulamkkunnathukkavu
83 Desamangalam
84 Pariyaram
85 Panjal
86 Thiruvilwamala
87 Kondhazhi
88 Pazhayannur
89 Chelakkara
90 Varavoor
91 Puthur
92 Thekkumkkara
93 Mattathur <750
94 Muriyad
95 Mullurkkara
96 Varandarappilly
97 Kodassery
98 Pananchery
99 Athirappilly

Source: Census 2001

Thirteen Grama Panchayats in the eastern high within the range of 1500- 3000 pp.sq.km.
land region fall within the lowest density range group
with a minimum of 20 persons / Sq.km. in Athirappilly
3.3.2 NET POPULATION DENSITY
Grama Panchayat, whereas three LSGs including Thrissur The average net population density of the dis-
Municipal Corporation falls in the highest population trict is calculated as 1784 pp.sq.km. The spatial distri-
density range with maximum of 3130. Majority of the bution of the net population density is shown in Fig.
LSGs (45 No.) falls within the population density range 3.19.
of 750-1500 persons/sq.km. The remaining LSGs falls


Highest net population density range exists ratio. In all the Census, females outnumbered males in
(2000-3000) in the coastal plains. Lowest net popula- Kerala, which is contrary to all India pattern. The sex
tion density is seen in Athirapilly (less than 1000). How- ratio of Kerala has gradually increased from 1004 in 1901
ever the net population density is highest in Thrissur to 1028 in 1951 and then to 1058 in 2001. The 2001 Cen-

Fig 3.19: Net Population density 2001- LSG wise

Municipal Corporation (4349.73 pp.sq.km). Net popu- sus shows that Kerala is the only state in India where
lation density of all Municipal Councils are more than sex ratio is above the equality ratio and is a 100-year
2000pp Sq.km. except Chalakkudy Municipal Council high with 1058 females per 1000 males.
(1991.26 pp.sq.km). This clearly indicates that net popu-
District-wise analysis shows that the highest sex
lation density in urban areas is more than that of rural
ratio of 1094 is in Pathanamthitta District and the low-
areas. In other words habitable area available per per-
est in Idukki District with 993 females per 1000 males.
son in urban areas as well as in some of the coastal LSGs
Among the surrounding districts, Thrissur has the high-
of the district is much less compared to the remaining
est sex ratio (Fig 3.20)
parts of the district resulting in increased pressure on
land at urban as well as coastal areas of the district. In 1991 census, Thrissur district had a sex ratio of
1085 as against 1036 for the state during the correspond-
3.4 SEX RATIO ing period. Thrissur district had the highest sex ratio
Kerala has a unique position with regard to sex among the districts in 1991. In 2001 census, Sex ratio of
Thrissur district is 1092 which is higher than the State


Source: Census 2001

Fig 3.20 Comparison of sex ratio

Source: Census 2001

Fig 3.21: Comparison of sex ratio with State

value of 1058. Thrissur district has the second rank Within the district, the sex ratio varied from 1064
among the districts in respect of sex ratio. The com- in Thrissur taluk to 1154 in Chavakkad taluk in 2001. The
parison of sex ratio of Thrissur district with that of the highest sex ratio is in Chavakkad taluk (1154), followed
state in 1991 and 2001 is shown in Fig. 3.21. by Kodungallur (1116), Talappilly taluk (1104),



Mukundapuram taluk (1068) and Thrissur taluk (1064). ing that at birth the sex ratio is more or less uniform
Generally rural areas have higher proportion of females irrespective of districts, but it changes later due to the
than that of urban areas. Thrissur District confirms this migration pattern.
pattern.
3.4.1 AGE SEX PYRAMID
A higher value of sex ratio could mean that there
The most important demographic characteristic
is out migration of male (for jobs etc.) population from
of a population is its age-sex structure. Age-sex pyra-
district.
mids (also known as population pyramids) graphically
The sex ratio in the age group of 0-6 (Figure 3.22) display this information to improve understanding and
of the district is 958 which is less than that of the aver- ease comparison.

Fig 3.22 Sex ratio – age group 0 – 6 Source: Census 2001

age value of the sex ratio of the State (960) in this age Age group wise population of Thrissur district is
group. Reason if any for the same has to be explored. shown in Fig. 3.23 The age sex pyramid of state Kerala
The variation in sex ratio of 0-6 age group in the and Thrissur district is shown in Fig 3.24 and Fig. 3.25.
surrounding districts is less (963-954) than the varia- From the figures it is clear that sex pyramid of the Dis-
tion in general value of sex ratio (1092-1017), indicat- trict is more or less similar to that of the State.



Source: Census 2001

Fig 3.23: Age group wise population – Thrissur District

80-90

60-70

40-50

20-30

0-10

Source: Census 2001

Fig 3.24: Age Sex Pyramid – Kerala State



Source: Census 2001

Fig 3.25: Age Sex Pyramid – Thrissur District

3.5 POPULATION CONCENTRATION PATTERN tern of Thrissur District in 1971 (Figure 3.26), it is clear
The following procedure is adopted to find out that 1/3RD of the cumulative population is distributed
the population concentration pattern. in 23 LSGs which include four Municipal Councils ex-
cept Kodungallur and Kunnamkulam and Thrissur Mu-
1. Find the population density of each LSG nicipal Corporation, ½ of the cumulative population is
2. Arrange the LSGs in the descending order of distributed in 42 LSGs which include five Municipal
density Councils except Kunnamkulam and Thrissur Municipal
3. Find the cumulative of the population Corporation and 2/3rd of the cumulative population is
distributed in 59 LSGs which include all Municipal Coun-
4. Identify the LSGs where 1/3rd of the cumula-
cils and Thrissur Municipal Corporation. These LSGs are
tive total population meets.
located along coastal areas and the existing statutory
5. LSGs from top to the LSGs identified in step 4
urban areas.
are the LSGs where 1/3rd population is con-
centrated. Considering the population concentration pat-
tern of Thrissur District in 1981 (Fig. 3.27), it is clear that
6. Similarly identify the LSGs where ½ and 2/3rd
1/3RD of the cumulative population is distributed in 23
population is concentrated.
LSGs which include five Municipal Councils (except
The population concentration patterns of Thrissur
Kunnamkulam) and the Municipal Corporation, ½ of the
district in 1971, 1981, 1991 and 2001 are shown in Fig-
cumulative population is distributed in 42 LSGs which
ures 3.26, 3.27, 3.28 and 3.29 respectively.
include five Municipal Councils and one Municipal Cor-
Considering the population concentration pat- poration except Kunnamkulam Municipal Council and



Fig 3.26: Population concentration pattern - 1971






2/3rd of the cumulative population is distributed in 59 tory urban areas. In 1971 Kodungallur Municipal Coun-
LSGs which include all Municipal Councils and Munici- cil falls under ½ population concentration category. But
pal Corporation. These 59 LSGs out of 99 LSGs are lo- in 1981 it comes under 1/3rd population concentration
cated along coastal areas and near to the existing statu- category indicating increasing population in this urban

area. all Municipal Councils and Municipal Corporation.
These 61 LSGs out of 99 LSGs include the coastal LSGs
Considering the population concentration pat-
and existing statutory urban areas.
tern of Thrissur District in 1991 (Fig. 3.28), it is clear that
1/3rd of the cumulative population is distributed in 24 The population concentration pattern based on
LSGs which include Municipal Councils (except net population density
Kunnamkulam and Chalakkudy) and the Municipal Cor- The population concentration pattern is derived
poration. ½ of the cumulative population is distributed by calculating the cumulative population after arrang-
in 43 LSGs which include five Municipal Councils except ing the LSGs in the descending order of net residential
Kunnamkulam and the Municipal Corporation. 2/3RD of density (total population / habitable area obtained by
the cumulative population is distributed in 60 LSGs subtracting the area of water bodies, forest, paddy, rub-
which include all Municipal Councils and the Municipal ber plantation, marshy and wasteland etc. from the
Corporation. These 60 LSGs include coastal LSGs and geographical area).
statutory urban areas.
The population concentration pattern of the dis-
Considering the population concentration pat- trict is shown in Fig. 3.30. It shows 1/3rd of the cumula-
tern of Thrissur District in 2001 (Fig. 3.29), it is clear that tive population is distributed in 24 LSGs and it includes
1/3RD of the cumulative population is distributed in 25 5 Municipal Councils (except Chalakkudy Municipal
LSGs which include five Municipal Councils (except Council) and the Municipal Corporation. Half of the cu-
Kunnamkulam Muncipal Council) and the Thrissur Mu- mulative population is distributed in 41 LSGs which in-
nicipal Corporation ½ of the cumulative population is clude all Municipal Councils and the Municipal Corpo-
distributed in 43 LSGs which include all Municipal Coun- ration. 2/3rd of the cumulative population is distributed
cils and the Municipal Corporation . 2/3rd of the cumula- in 62 LSGs which include all Municipal Councils and the
tive population is distributed in 61 LSGs which include Municipal Corporation.

Fig 3.30: Population concentration pattern based on net population density of 2001


It shows 2/3rd of the total population of the dis- Thrissur district was 11.72%. Among them, 14.4% were
trict is concentrated in 38.21% of the area of the dis- males and 9.80% were females.
trict. Considering the above factors, it is concluded that
population is distributed more in the coastal areas, along
3.7 POPULATION PROJECTION (TREND BASED)
the major transportation corridor and around the ur- Population growth of an area depends on num-
ban areas. The spatial location of 24 LSGs, where bers of births, death, in migrants and out migrants over
1/3rd population is concentrated clearly shows that they a time period taken for the population projection. If
are located along coastal areas and in the corporation one can predict the exact future values of all these fac-
area and its surroundings. This may be due to social/ tors, population projection of that area can be done
occupational reasons. The alignment of NH 17 along the very accurately. The mathematical expression is as fol-
coastal belt more strengthens the above factors. lows

3.6 MIGRATION DETAILS P1 = P0 + B- D + I-O , where P1 and P0 refers to the
size of population at the beginning and end of a time
The total population of Thrissur district in 1991
period and B, D,I and O are the number of births , deaths
census was 2737311. Out of this, 209369 persons were
, immigrants and out migrants respectively in the time
in-migrants by place of birth who constituted 7.65% of
period concerned. Practically this is very difficult .So
the total population. The percentage of total male and
population projection is usually done by understand-
female in-migrants by place of birth was 6.66% and
ing the pattern of population growth in the past and
8.56% respectively. As regards in-migrants by place of
assuming the same pattern will continue in the future,
birth from other districts of the state, there were 181173
the present population is projected to the desired fu-
such in-migrants, who constituted 86.53% of the total
ture period.
in-migrants by place of birth reported in the district
during 1991 census. Among them 83.49% were male in- The population is projected by two methods
migrants and 88.71% were female in-migrants. The per- namely Decreasing rate method and Apportionment
centage of in-migrants by place of birth who migrated method and average of the two is taken as the popula-
from other States and Union Territories of India to tion figures in 2011 and 2021.

Table 3.7: Projected District Population – Decreasing rate method

Year Total population Population Growth rate % Decrease in
Population Growth rate

1971 2,128,877

1981 2,439,633 14.6

1991 2,737,311 12.2 -16.41

2001 2,974,232 8.66 -29.07

2011 3,156,775 6.14 -29.09

2021 3,294,161 4.35 -29.09

Source: Census 2001


3.7.1 Decreasing rate method District based on the apportionment method is given
The population growth rate of 2011 & 2021 are in table 3.8.
calculated assuming that the same percentage of de- The projected total population by the two meth-
crease in population growth prevails as that of 2001 for ods differs slightly. The average of these two is taken
the succeeding two decades. Based on the population as the population figures of Thrissur District for 2011
growth rate calculated, the population of the District is and 2021. This is given in Table 3.9 .Thus the projected
projected for 2011 and 2021 and the result is given in total population of Thrissur District for 2011 and 2021
Table 3.7. are 3,153,564 and 3,286,439 respectively.

3.7.2 Apportionment method 3.8 INFERENCE
In the apportionment method the ratio of the The population density of Thrissur district is 981
District population to the State population has been pp sq km which is higher than the state average value
found out and the same is projected to the next two of 819 pp.sq.km. Among the surrounding districts, popu-

Table 3.8: Projected District Population – Apportionment method

Total population Ratio of District Change in
Year population to Sate the ratio
Kerala Thrissur
Population
1971 21,347,375 2,128,877 0.0997
1981 25,453,680 2,439,633 0.0958 -0.0389
1991 29,098,518 2,737,311 0.0941 -0.01852
2001 31,841,374 2,974,232 0.0934 -0.00704
2011 33,817,196 3,150,353 0.0932 -0.00267
2021 35,198,589 3,278,716 0.0931 -0.0001
Source: Census 2001

TABLE 3.9: FINAL PROJECTED POPULATION FIGURES OF THE DISTRICT

Total population as per Total population as per Average
Year apportionment method
decrease rate method population figures

2011 3,156,775 3,150,353 3,153,564
2021 3,294,161 3,278,716 3,286,439
Source: Census 2001
decades assuming the change in the ratio during 2001 - lation density of Thrissur is less than that of Ernakulam
2011 and 2011-2021 will remain same as the value of and Malappuram. The growth rate of population in the
that during 2001-2011. In order to find out the projected district is significantly declining for the last three de-
population in 2011 and 2021, the projected populations cades and hence it can be presumed that there won’t
of the State during the same years are needed. The be much increase in the gross population density of
details of the population projection of Kerala is elabo- the district in future if the present trend continues.
rated in the Annexe 3. The projected population of the The spatial agglomeration pattern of population



clearly shows that the transportation corridors espe- gross population density value of less than 750 popula-
cially the national highways passing through the dis- tion/sq km. The LSGs in the mid land region is having a
trict plays a crucial role in formulating the spatial con- gross population density range of 750-1500 population/
centration pattern of population. Other determinants sq km. The highest population density is seen in the
are social and physical character of coastal areas near- coastal belt of the district which falls in the range 1500-
ness to existing urban areas etc. 3200 population / sq km. Based on the trend it is pro-
Three distinct zones can be earmarked based on jected that the population of the District will be in-
the distribution of the gross population density. The creased by 1.79 lakhs and 1.33 lakhs in the succeeding
eastern high land region of the district shows the least decades, 2001-11 and 2011-2021 respectively.


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