// Workers AI · dad joke modeWhy did Pio IX go to the party? Because he was a pope-ular guest.

Municipality of Pio IX Município de Pio IX
Flag Coat of arms
Location in Piauí and Brazil
Coordinates: 06°50′16″S 40°34′44″W
Country	Brazil
Region	Northeast
State	Piauí
Settled	January 1, 1939
Government
• Mayor	Jose Mesquita Viana de Andrade (PSDB)
Area
• Total	1,948.843 km2 (752.452 sq mi)
Elevation	495 m (1,624 ft)
Population  (2020 )
• Total	18,459
• Density	8.6/km2 (22/sq mi)
Time zone	UTC−3 (BRT)
HDI (2000)	0.572 – medium

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