Go back to see all fact bundles
Population in Sejneński County 2020
In 2020, Sejneński county ranked 380 of 380 Polish counties. Population shrank by 1,340 residents -6.5% between 2015-2020, at 19,266.
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 2019
2020
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