About this API
GUS's Local Data Bank holds thousands of statistical indicators (demographics, economy, labour market, environment) broken down by voivodeship, county, and municipality. The API lets you programmatically search topic categories and retrieve specific time series.
Frequently asked questions
Do I need an API key?
No, basic use is fully free and keyless. An optional, free X-ClientId header raises the request limit for heavier use.
What data does this API return?
Topic categories ("Subjects"), statistical variables, territorial units, and the time-series values themselves — from the national level down to municipalities.
Can this API be called directly from a browser?
Yes — the API returns a CORS header allowing calls from any domain, so it works straight from frontend code (hence the live "Try it" button above).
Who runs this API?
Poland's Central Statistical Office (GUS). Full documentation is available at api.stat.gov.pl/Home/BdlApi.