Map of Oeiras, Piauí, Brazil

Oeiras is a city in Piauí, Brazil, with a population of about 37,085. It lies at 7.0253°S, 42.1311°W. Oeiras is about 1,160 km (721 mi) northeast of Brasília, the capital. The nearest city on our map is Picos, 74 km to the east.

Oeiras at a glance

Where is Oeiras?

• The 14th largest city in Piauí on this site.
• Located in the Southern and Western hemispheres.
• Daylight ranges from about 11 h 43 min on the shortest day to 12 h 32 min on the longest day (around 21 June and 21 December).

Cities near Oeiras

• Picos — 74 km east
• Floriano — 103 km west
• Parnarama — 183 km northwest
• Araripina — 190 km east
• Altos — 224 km north
• Teresina — 228 km north
• Timon — 228 km north
• São Raimundo Nonato — 230 km south
• Ouricuri — 245 km southeast
• Colinas — 259 km northwest

Largest cities in Piauí

• Teresina — 871,126
• Parnaíba — 170,491
• Picos — 83,090
• Piripiri — 63,787
• Floriano — 62,036
• Barras — 47,938
• Altos — 47,453
• Campo Maior — 46,893
• União — 46,119
• Esperantina — 40,970

Largest cities in Brazil

• São Paulo — 12,400,232
• Rio de Janeiro — 6,747,815
• Belo Horizonte — 2,721,564
• Salvador — 2,711,840
• Fortaleza — 2,400,000
• Manaus — 2,219,580
• Brasília — 2,207,718
• Curitiba — 1,948,626
• Recife — 1,653,461
• Goiânia — 1,536,097

Map of Brazil and all its cities →

Other places named Oeiras

• Oeiras — Lisbon, Portugal

Sources: place names, coordinates, populations and time zones from GeoNames (CC BY 4.0, data retrieved October 2026). Population figures are the latest values recorded in GeoNames; depending on the country they refer to the city proper, a municipality or a wider urban area, so they can differ from census or metro-area figures. Map © OpenStreetMap contributors.