Regional Statistics
25,250
41
people/km²
87,496
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Population in Ostrołęcki County 2021
In 2021, Ostrołęcki county ranked 138 of 380 Polish counties. Population shrank by 1,295 residents -1.46% between 2016-2021, at 87,496.
Among 339 declining counties, ranked in top 20% for steepest loss. Within Masovian voivodeship, ranked 16 of 42 counties.
Based on 31 years of official GUS statistics for Ostrołęcki county and its 11 municipalities within Masovian voivodeship.
Total Population Chart
Lowest at 82,815 in 1999
Highest at 88,944 in 2017
1995
29 years (+5 year forecast)
2024
Powiat Ranking
140/380 County in Poland
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Year over Year
since 2020
2021
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Vital Statistics
births and deaths
Age Structure
children, working age, and elderly
Gender
Age Distribution
from 0 to 75+ years
Ostrołęcki
11 municipalities