União is a populated place in Brazil. GeoNames lists its administrative area as Piauí.

Its mapped location is latitude -4.58583° and longitude -42.86417° (WGS84). The recorded IANA time zone is America/Fortaleza. The country record uses the currency code BRL. The source record reports a population of 46,119; this is a recorded figure, not a live population count.

The GeoNames record was last modified on 2025-07-07. Use this page to explore the street map, local time, weather and currency reference tools. Community guides and useful local links can be added separately.