Go back to see all fact bundles
Population in Sejneński County 2021
In 2021, Sejneński county ranked 380 of 380 Polish counties. Population shrank by 1,425 residents -6.98% between 2016-2021, at 18,992.
Among 339 declining counties, in the bottom 20% for rate of decline. Within Podlaskie voivodeship, ranked 17 of 17 counties.
Based on 31 years of official GUS statistics for Sejneński county and its 5 municipalities within Podlaskie voivodeship.
Total Population Chart
Lowest at 18,434 in 2024
Highest at 22,218 in 1995
1995
29 years (+5 year forecast)
2024
Powiat Ranking
380/380 County in Poland
Page 1 of 38
Go to Sejneński
Year over Year
since 2020
2021
Page 1 of 38
Go to Sejneński
Vital Statistics
births and deaths
Age Structure
children, working age, and elderly
Gender
Age Distribution
from 0 to 75+ years
Sejneński
5 municipalities