225 cities and towns
| Abbreviation | 20 |
| State Population | 3,193,333 |
| # | City | Population | Median Income | Home Value | Median Rent | Median Age |
|---|---|---|---|---|---|---|
| 201 | São Félix do Piauí | 2,842 | N/A | N/A | N/A | 34.3 |
| 202 | São Miguel do Fidalgo | 2,829 | N/A | N/A | N/A | 34.3 |
| 203 | Novo Santo Antônio | 2,827 | N/A | N/A | N/A | 34.3 |
| 204 | Aroeiras do Itaim | 2,690 | N/A | N/A | N/A | 34.3 |
| 205 | Olho d'Água do Piauí | 2,637 | N/A | N/A | N/A | 34.3 |
| 206 | Pedro Laurentino | 2,514 | N/A | N/A | N/A | 34.3 |
| 207 | Porto Alegre do Piauí | 2,364 | N/A | N/A | N/A | 34.3 |
| 208 | Floresta do Piauí | 2,333 | N/A | N/A | N/A | 34.3 |
| 209 | Tanque do Piauí | 2,316 | N/A | N/A | N/A | 34.3 |
| 210 | São Miguel da Baixa Grande | 2,269 | N/A | N/A | N/A | 34.3 |
| 211 | Santo Antônio dos Milagres | 2,138 | N/A | N/A | N/A | 34.3 |
| 212 | Miguel Leão | 1,318 | N/A | N/A | N/A | 34.3 |
| 213 | São Luis do Piauí | 0 | N/A | N/A | N/A | — |
| 214 | São José do Divino | 0 | N/A | N/A | N/A | — |
| 215 | Pajeú do Piauí | 0 | N/A | N/A | N/A | — |
| 216 | Morro do Chapéu do Piauí | 0 | N/A | N/A | N/A | — |
| 217 | Jacobina do Piauí | 0 | N/A | N/A | N/A | — |
| 218 | Sebastião Leal | 0 | N/A | N/A | N/A | — |
| 219 | Guadalupe | 0 | N/A | N/A | N/A | — |
| 220 | Curral Novo do Piauí | 0 | N/A | N/A | N/A | — |
| 221 | Colônia do Piauí | 0 | N/A | N/A | N/A | — |
| 222 | Caridade do Piauí | 0 | N/A | N/A | N/A | — |
| 223 | São João da Canabrava | 0 | N/A | N/A | N/A | — |
| 224 | Brasileira | 0 | N/A | N/A | N/A | — |
| 225 | Murici dos Portelas | 0 | N/A | N/A | N/A | — |