About Castelo do Piauí
Castelo do Piauí is a city in Piaui, Brazil with a population of 19,288. It is the 1,816th largest of the 2,250 cities of 15,000 or more listed in Brazil, and the 26,099th largest worldwide. It lies 1,355 km from Brasília.
Key Facts
Country
Region
Rank in region
#29of 37
Coordinates
-5.322, -41.553
Record updated
23 June 2025
Entry edited, not measured
City population, GeoNames. GeoNames publishes no year for its population figures, so “record updated” is when the entry was last edited — not the date the population was measured. Elevation is modelled from a digital elevation model rather than surveyed, so it is approximate.
Nearby Cities
All 2,250 in BrazilClosest listed cities by great-circle distance from the city centre.