Madrid province had the highest population aged 16 to 64 of 52 provinces in 2021, at 4.45 million. Soria province had the lowest, at 54,865. The median was 396,480 and the figure for Spain was 30.88 million. Source: the Instituto Nacional de Estadística.
Resident population aged 16 to 64 on 1 January (INE annual census). Used as the working-age denominator.
Spain only. For EU countries and regions use population_15_64 (Eurostat age band).
Every value in the ranking comes from the same publisher and the same period, so the provinces are compared on one definition. Equal values share a rank.
How to cite
Instituto Nacional de Estadística (INE). Censo anual de población: población de 16 a 64 años (tabla 68540). https://www.ine.es/jaxiT3/Tabla.htm?t=68540. Retrieved 2026-10-07.
Use this data in your AI agent
Invokely serves this figure to AI assistants through MCP and to code through a REST API, with the source and citation attached. Ask your assistant:
Rank Provinces of Spain by population aged 16 to 64 using official data, and cite the source.
rank_places {"indicator":"population_16_64","level":"province","within":"Spain","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=population_16_64&level=province&within=Spain&limit=10
Which province has the highest population aged 16 to 64?
Madrid province, with 4.45 million in 2021, according to the Instituto Nacional de Estadística.
Which province has the lowest population aged 16 to 64?
Soria province, with 54,865 in 2021.
Where does this ranking come from?
Every value comes from one source and one period, so the places are comparable: Instituto Nacional de Estadística, Censo anual de población: población de 16 a 64 años (tabla 68540). Retrieved 2026-10-07.
