Pio IX

{{Infobox settlement

|official_name = Municipality of Pio IX

|native_name = Município de Pio IX

|nickname =

|motto =

|image_skyline = Pioixvista.JPG

|imagesize =

|image_caption =

|image_flag = BANDEIRADEPIOIX.jpg

|image_seal = BrasaoPioIX.JPG

|image_map = Piaui Municip PioIX.svg

|mapsize =

|map_caption = Location in Piauí and Brazil

|subdivision_type = Country

|subdivision_name = Brazil

|subdivision_type1 = Region

|subdivision_name1 = Northeast

|subdivision_type2 = State

|subdivision_name2 = Piauí

|leader_title = Mayor

|leader_name = Jose Mesquita Viana de Andrade (PSDB)

|established_title = Settled

|established_date = January 1, 1939

|area_magnitude =

|area_total_km2 = 1948.843

|area_total_sq_mi =

|population_as_of = 2020 [https://cidades.ibge.gov.br/brasil/pi/pio-ix/panorama IBGE 2020]

|population_note =

|population_total = 18,459

|population_density_km2 = 8.6

|population_density_sq_mi =

|population_urban =

|timezone = BRT

|utc_offset = −3

|timezone_DST =

|utc_offset_DST =

|coordinates = {{coord|06|50|16|S|40|34|44|W|region:BR|display=inline,title}}

|elevation_m = 495

|elevation_ft =

|postal_code_type =

|postal_code =

|blank_name = HDI (2000)

|blank_info = 0.572 – medium[http://www.pnud.org.br/atlas/ranking/IDH-M%2091%2000%20Ranking%20decrescente%20(pelos%20dados%20de%202000).htm] - UNDP

|website =

|footnotes =

}}

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