Regional Statistics
21,019
1,425
people/km²
47,696
Go back to see all fact bundles
Population in Ostrołęka County 2025
In 2024, Ostrołęka county ranked 301 of 380 Polish counties. Population shrank by 4,359 residents -8.37% between 2019-2024, at 47,696.
Among 339 declining counties, in the bottom 10% for rate of decline (mildest loss). Within Masovian province, ranked 33 of 42 counties.
Based on 31 years of official GUS statistics for Ostrołęka county and its 1 municipality within Masovian province.
Total Population
-1.11
%
since
2023
2024
47,696
Total Population Chart
Lowest at 47,696 in 2024
Highest at 55,271 in 1998
1995
29 years (+5 year forecast)
2024
Ranking
301/380 County in Poland
301
Ostrołęka
47,696
302
Mrągowski
47,074
303
Jaworski
46,822
304
Tucholski
46,763
307
Łęczycki
46,137
308
Słubicki
45,679
309
Rawski
45,664
Page 31 of 38
Change
328/380 County in Poland
322
Sokólski
-1.1%
323
Opatowski
-1.1%
325
Grudziądz
-1.1%
326
Prudnicki
-1.1%
328
Ostrołęka
-1.1%
329
Tarnobrzeg
-1.1%
Page 33 of 38
Population Density
-1.10
%
since
2023
2024
1,425.5
per km²
Vital Statistics
births and deaths
Live Births
-11.05
%
since
2023
2024
338
Deaths
-3.75
%
since
2023
2024
436
Age Structure
children, working age, and elderly
Children (0-14)
-5.36
%
since
2023
2024
6,769
Working Age (15-64)
-1.89
%
since
2023
2024
29,690
Elderly (65+)
+3.90
%
since
2023
2024
11,237
Gender
Men
-1.19
%
since
2023
2024
22,502
Women
-1.03
%
since
2023
2024
25,194
Age Distribution
from 0 to 75+ years
0-4 years
-6.98
%
since
2023
2024
1,878
5-9 years
-1.35
%
since
2023
2024
2,414
10-14 years
-7.78
%
since
2023
2024
2,477
15-19 years
+9.20
%
since
2023
2024
2,741
20-24 years
-5.32
%
since
2023
2024
1,781
25-29 years
-4.73
%
since
2023
2024
2,258
30-34 years
-7.03
%
since
2023
2024
2,723
35-39 years
-6.74
%
since
2023
2024
3,515
40-44 years
+0.48
%
since
2023
2024
3,998
45-49 years
+1.72
%
since
2023
2024
3,550
50-54 years
+0.61
%
since
2023
2024
2,979
55-59 years
-1.56
%
since
2023
2024
2,908
60-64 years
-5.32
%
since
2023
2024
3,237
65-69 years
-0.22
%
since
2023
2024
3,992
70-74 years
+4.82
%
since
2023
2024
3,306
75-79 years
+14.96
%
since
2023
2024
784
80-84 years
-1.81
%
since
2023
2024
975
85+ years
+5.42
%
since
2023
2024
992