225 cities and towns
| Abbreviation | 20 |
| State Population | 3,193,333 |
| # | City | Population | Median Income | Home Value | Median Rent | Median Age |
|---|---|---|---|---|---|---|
| 101 | Ribeiro Gonçalves | 6,164 | N/A | N/A | N/A | 34.3 |
| 102 | Colônia do Gurguéia | 6,150 | N/A | N/A | N/A | 34.3 |
| 103 | São João da Serra | 6,114 | N/A | N/A | N/A | 34.3 |
| 104 | Novo Oriente do Piauí | 6,097 | N/A | N/A | N/A | 34.3 |
| 105 | Santa Filomena | 6,087 | N/A | N/A | N/A | 34.3 |
| 106 | São Julião | 6,025 | N/A | N/A | N/A | 34.3 |
| 107 | Campo Grande do Piauí | 6,020 | N/A | N/A | N/A | 34.3 |
| 108 | Bonfim do Piauí | 5,913 | N/A | N/A | N/A | 34.3 |
| 109 | Santo Antônio de Lisboa | 5,839 | N/A | N/A | N/A | 34.3 |
| 110 | Santa Cruz do Piauí | 5,831 | N/A | N/A | N/A | 34.3 |
| 111 | Rio Grande do Piauí | 5,801 | N/A | N/A | N/A | 34.3 |
| 112 | Bom Princípio do Piauí | 5,636 | N/A | N/A | N/A | 34.3 |
| 113 | Caraúbas do Piauí | 5,630 | N/A | N/A | N/A | 34.3 |
| 114 | São Francisco de Assis do Piauí | 5,572 | N/A | N/A | N/A | 34.3 |
| 115 | Bertolínia | 5,562 | N/A | N/A | N/A | 34.3 |
| 116 | São João da Fronteira | 5,522 | N/A | N/A | N/A | 34.3 |
| 117 | Caldeirão Grande do Piauí | 5,503 | N/A | N/A | N/A | 34.3 |
| 118 | Caxingó | 5,496 | N/A | N/A | N/A | 34.3 |
| 119 | Geminiano | 5,445 | N/A | N/A | N/A | 34.3 |
| 120 | Patos do Piauí | 5,425 | N/A | N/A | N/A | 34.3 |
| 121 | Joca Marques | 5,394 | N/A | N/A | N/A | 34.3 |
| 122 | São Francisco do Piauí | 5,392 | N/A | N/A | N/A | 34.3 |
| 123 | Júlio Borges | 5,388 | N/A | N/A | N/A | 34.3 |
| 124 | Aroazes | 5,369 | N/A | N/A | N/A | 34.3 |
| 125 | Santa Luz | 5,336 | N/A | N/A | N/A | 34.3 |
| 126 | Alvorada do Gurguéia | 5,322 | N/A | N/A | N/A | 34.3 |
| 127 | Fartura do Piauí | 5,284 | N/A | N/A | N/A | 34.3 |
| 128 | Nossa Senhora de Nazaré | 5,228 | N/A | N/A | N/A | 34.3 |
| 129 | Massapê do Piauí | 5,218 | N/A | N/A | N/A | 34.3 |
| 130 | Juazeiro do Piauí | 5,214 | N/A | N/A | N/A | 34.3 |
| 131 | Landri Sales | 5,213 | N/A | N/A | N/A | 34.3 |
| 132 | Manoel Emídio | 5,209 | N/A | N/A | N/A | 34.3 |
| 133 | Lagoa do Barro do Piauí | 5,146 | N/A | N/A | N/A | 34.3 |
| 134 | Várzea Branca | 5,055 | N/A | N/A | N/A | 34.3 |
| 135 | Palmeira do Piauí | 5,048 | N/A | N/A | N/A | 34.3 |
| 136 | Agricolândia | 4,940 | N/A | N/A | N/A | 34.3 |
| 137 | Campinas do Piauí | 4,938 | N/A | N/A | N/A | 34.3 |
| 138 | Conceição do Canindé | 4,932 | N/A | N/A | N/A | 34.3 |
| 139 | Cocal de Telha | 4,911 | N/A | N/A | N/A | 34.3 |
| 140 | Currais | 4,854 | N/A | N/A | N/A | 34.3 |
| 141 | São Gonçalo do Piauí | 4,837 | N/A | N/A | N/A | 34.3 |
| 142 | Lagoa do Piauí | 4,810 | N/A | N/A | N/A | 34.3 |
| 143 | Marcos Parente | 4,724 | N/A | N/A | N/A | 34.3 |
| 144 | Santa Rosa do Piauí | 4,650 | N/A | N/A | N/A | 34.3 |
| 145 | Alegrete do Piauí | 4,634 | N/A | N/A | N/A | 34.3 |
| 146 | Campo Alegre do Fidalgo | 4,616 | N/A | N/A | N/A | 34.3 |
| 147 | Lagoa do Sítio | 4,520 | N/A | N/A | N/A | 34.3 |
| 148 | Arraial | 4,520 | N/A | N/A | N/A | 34.3 |
| 149 | Várzea Grande | 4,515 | N/A | N/A | N/A | 34.3 |
| 150 | Francinópolis | 4,505 | N/A | N/A | N/A | 34.3 |