Household income by municipality, 2023

Where no figure is published for the area itself, a zone or province figure is calculated from its municipalities and states how many of them it is based on. Counts, such as population or tourist lets, are added up only if every municipality has the figure. Prices, percentages and amounts are averaged, weighted by population, and the average is published only if the municipalities with data account for at least half of the zone's or province's population. Some statistics are published only for larger municipalities: the appraised value of the Ministry of Housing and Urban Agenda, for those with more than 25,000 inhabitants; in a zone with many small villages, the average mostly reflects the towns where most people live. When an agency publishes a value directly for the province, we do not replace it with our own calculation: we use the published value and say so, or give no province figure. So a province's appraised value is the one the Ministry publishes for the province as a whole, while a zone's is our population-weighted average, with the number of municipalities and the share of the population it rests on; that is why the two can differ. A combined figure describes the area as a whole; towns within it can differ a lot, and their own pages show it.