Regional Statistics
17,720
27
people/km²
40,212
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Population in Siemiatycki County 2026
Siemiatycki county ranks 337 of 380 Polish counties. Population shrank by 3,981 residents -9.01% between 2019-2024, now at 40,212.
Among 339 declining counties, in the bottom 10% for rate of decline (mildest loss). Within Podlaskie voivodeship, ranks 12 of 17 counties.
Based on 31 years of official GUS statistics for Siemiatycki county and its 9 municipalities within Podlaskie voivodeship.
Total Population Chart
Lowest at 40,212 in 2024
Highest at 52,913 in 1995
1995
29 years (+5 year forecast)
2024
Powiat Ranking
337/380 County in Poland
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Year over Year
since 2023
2024
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Vital Statistics
births and deaths
Age Structure
children, working age, and elderly
Gender
Age Distribution
from 0 to 75+ years
Siemiatycki
9 municipalities