Regional Statistics
Population in Siemiatycki County 2026
Siemiatycki county ranks 337 of 380 Polish counties. Population shrank by 2,660 residents -6.28% between 2020-2025, now at 39,677.
Among 339 declining counties, in the bottom 20% for rate of decline. 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.
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births and deathsAge Structure
children, working age, and elderlyPopulation by Gender
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Contact Information for Siemiatycki
Updated 119 days ago
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