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Population in Siedlecki County 2025
In 2024, Siedlecki county ranked 164 of 380 Polish counties. Population shrank by 916 residents -1.13% between 2019-2024, at 80,446.
Among 339 declining counties, ranked in top 20% for steepest loss. Within Masovian province, ranked 20 of 42 counties.
Based on 31 years of official GUS statistics for Siedlecki county and its 13 municipalities within Masovian province.
Total Population
+0.01
%
since
2023
2024
80,446
Population Density
0.00
%
since
2023
2024
50.2
per km²
Vital Statistics
births and deaths
Live Births
-1.28
%
since
2023
2024
696
Deaths
+6.88
%
since
2023
2024
901
Age Structure
children, working age, and elderly
Children (0-14)
-1.25
%
since
2023
2024
13,963
Working Age (15-64)
-0.19
%
since
2023
2024
52,186
Elderly (65+)
+2.02
%
since
2023
2024
14,297
Gender
Men
-0.03
%
since
2023
2024
40,273
Women
+0.04
%
since
2023
2024
40,173
Age Distribution
from 0 to 75+ years
0-4 years
-7.12
%
since
2023
2024
3,863
5-9 years
+0.69
%
since
2023
2024
4,932
10-14 years
+1.67
%
since
2023
2024
5,168
15-19 years
+1.43
%
since
2023
2024
4,906
20-24 years
-0.15
%
since
2023
2024
4,694
25-29 years
-0.78
%
since
2023
2024
4,716
30-34 years
-4.65
%
since
2023
2024
5,103
35-39 years
-1.28
%
since
2023
2024
5,798
40-44 years
-0.03
%
since
2023
2024
6,227
45-49 years
+2.75
%
since
2023
2024
5,862
50-54 years
+3.22
%
since
2023
2024
5,325
55-59 years
-1.46
%
since
2023
2024
4,787
60-64 years
-1.08
%
since
2023
2024
4,768
65-69 years
+0.17
%
since
2023
2024
4,586
70-74 years
+5.21
%
since
2023
2024
3,938
75-79 years
+8.57
%
since
2023
2024
975
80-84 years
+0.50
%
since
2023
2024
1,600
85+ years
-3.25
%
since
2023
2024
1,697