Pio IX is the easternmost city in the Brazilian state of Piauí. The city is named after Pope Pius IX.

Municipality of Pio IX
Município de Pio IX
Flag of Municipality of Pio IX
Official seal of Municipality of Pio IX
Location in Piauí and Brazil
Location in Piauí and Brazil
Coordinates: 06°50′16″S 40°34′44″W / 6.83778°S 40.57889°W / -6.83778; -40.57889
CountryBrazil
RegionNortheast
StatePiauí
SettledJanuary 1, 1939
Government
 • MayorJose Mesquita Viana de Andrade (PSDB)
Area
 • Total1,948.843 km2 (752.452 sq mi)
Elevation
495 m (1,624 ft)
Population
 (2020 [1])
 • Total18,459
 • Density8.6/km2 (22/sq mi)
Time zoneUTC−3 (BRT)
HDI (2000)0.572 – medium[2]

References edit