| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| São Benedito | city | Piaui | Brazil | -7.97 | -41.67 | 1030 | 569 |
| São Benedito | city | Piaui | Brazil | -5.45 | -42.36 | 830 | 6756 |
| São Bento | city | Piaui | Brazil | -6.42 | -41.35 | 1013 | 6 |
| São Bento | city | Piaui | Brazil | -7.53 | -41.38 | 941 | 753 |
| São Bento | city | Piaui | Brazil | -7.25 | -40.97 | 1230 | 1502 |
| São Braz | city | Piaui | Brazil | -9.07 | -42.98 | 1788 | 941 |
| São Caetano | city | Piaui | Brazil | -3.42 | -41.92 | 52 | 1280 |
| São Carlos | city | Piaui | Brazil | -6.18 | -41.93 | 830 | 596 |
| São Domingos | city | Piaui | Brazil | -3.54 | -42.20 | 190 | 8625 |
| São Filipe | city | Piaui | Brazil | -4.65 | -42.83 | 219 | 11295 |
| São Fortunato | city | Piaui | Brazil | -7.37 | -41.63 | 1000 | 596 |
| São Francisco | city | Piaui | Brazil | -9.35 | -44.38 | 977 | 127 |
| São Francisco | city | Piaui | Brazil | -5.57 | -42.93 | 830 | 2306 |
| São Francisco | city | Piaui | Brazil | -10.48 | -44.05 | 2034 | 511 |
| São Francisco - Sul | city | Piaui | Brazil | -5.16 | -42.77 | 344 | 196438 |
| São Francisco 2 | city | Piaui | Brazil | -6.32 | -41.50 | 1007 | 112 |
| São Francisco do Piauí | city | Piaui | Brazil | -7.25 | -42.54 | 830 | 910 |
| São Félix | city | Piaui | Brazil | -3.40 | -42.02 | 85 | 1616 |
| São Félix | city | Piaui | Brazil | -9.48 | -45.47 | 1669 | 0 |
| São Félix do Piauí | city | Piaui | Brazil | -5.93 | -42.11 | 830 | 1031 |
| São Geraldo | city | Piaui | Brazil | -3.80 | -42.04 | 167 | 1834 |
| São Gonçalo | city | Piaui | Brazil | -10.03 | -45.30 | 1909 | 141 |
| São Gonçalo | city | Piaui | Brazil | -5.10 | -41.70 | 830 | 729 |
| São Gonçalo | city | Piaui | Brazil | -5.72 | -41.30 | 1223 | 0 |
| São Gonçalo | city | Piaui | Brazil | -6.40 | -40.88 | 2040 | 0 |
| São Gonçalo do Gurguéia | city | Piaui | Brazil | -10.03 | -45.30 | 1909 | 141 |
| São Gonçalo do Piauí | city | Piaui | Brazil | -6.00 | -42.70 | 830 | 8270 |
| São Joao da Parnahiba | city | Piaui | Brazil | -2.91 | -41.77 | 6 | 68083 |
| São José | city | Piaui | Brazil | -5.77 | -41.27 | 1669 | 0 |
| São José | city | Piaui | Brazil | -6.53 | -42.47 | 830 | 755 |
| São José | city | Piaui | Brazil | -3.80 | -41.83 | 187 | 1803 |
| São José | city | Piaui | Brazil | -3.62 | -42.20 | 331 | 2104 |
| São José | city | Piaui | Brazil | -9.50 | -44.15 | 1679 | 227 |
| São José | city | Piaui | Brazil | -3.62 | -42.62 | 55 | 1908 |
| São José 1 | city | Piaui | Brazil | -6.15 | -41.82 | 1010 | 1476 |
| São José da Esperança | city | Piaui | Brazil | -5.16 | -42.79 | 344 | 168574 |
| São José do Olho D’água | city | Piaui | Brazil | -5.93 | -42.23 | 895 | 621 |
| São José do Piauí | city | Piaui | Brazil | -6.87 | -41.47 | 1151 | 7309 |
| São João | city | Piaui | Brazil | -3.92 | -41.80 | 239 | 1402 |
| São João | city | Piaui | Brazil | -6.92 | -41.85 | 1135 | 4978 |
| São João | city | Piaui | Brazil | -3.77 | -42.23 | 324 | 2384 |
| São João 3 | city | Piaui | Brazil | -6.92 | -40.87 | 1669 | 1800 |
| São João da Passagem | city | Piaui | Brazil | -5.51 | -41.90 | 830 | 2944 |
| São João da Serra | city | Piaui | Brazil | -5.51 | -41.90 | 830 | 2944 |
| São João da Varjota | city | Piaui | Brazil | -6.92 | -41.85 | 1135 | 4978 |
| São Lourenco | city | Piaui | Brazil | -7.73 | -43.32 | 971 | 308 |
| São Lourenço | city | Piaui | Brazil | -8.45 | -44.08 | 925 | 298 |
| São Lourenço | city | Piaui | Brazil | -8.49 | -43.69 | 1010 | 216 |
| São Luiz | city | Piaui | Brazil | -8.98 | -44.07 | 948 | 476 |
| São Luís | city | Piaui | Brazil | -6.83 | -41.32 | 1000 | 1197 |
| São Luís | city | Piaui | Brazil | -4.57 | -41.93 | 830 | 1424 |
| São Luís | city | Piaui | Brazil | -5.40 | -41.13 | 1978 | 97 |
| São Mamede | city | Piaui | Brazil | -4.42 | -42.87 | 160 | 1040 |
| São Manoel | city | Piaui | Brazil | -9.40 | -44.12 | 1669 | 0 |
| São Manuel | city | Piaui | Brazil | -9.40 | -44.12 | 1669 | 0 |
| São Mateuss | city | Piaui | Brazil | -5.75 | -42.03 | 830 | 51 |
| São Miguel | city | Piaui | Brazil | -7.58 | -42.37 | 830 | 437 |
| São Miguel | city | Piaui | Brazil | -6.83 | -41.93 | 1013 | 460 |
| São Miguel do Tapuio | city | Piaui | Brazil | -5.50 | -41.32 | 974 | 15457 |
| São Pedro | city | Piaui | Brazil | -5.93 | -42.72 | 902 | 11436 |
| São Pedro do Piauí | city | Piaui | Brazil | -5.93 | -42.72 | 902 | 11436 |
| São Raimundo | city | Piaui | Brazil | -5.10 | -42.76 | 328 | 204620 |
| São Raimundo | city | Piaui | Brazil | -5.12 | -42.78 | 183 | 189095 |
| São Raimundo | city | Piaui | Brazil | -3.87 | -42.47 | 331 | 3182 |
| São Raimundo | city | Piaui | Brazil | -5.82 | -41.42 | 1017 | 0 |
| São Raimundo Nonato | city | Piaui | Brazil | -9.02 | -42.70 | 1669 | 16384 |
| São Raimundo Nontato | city | Piaui | Brazil | -9.02 | -42.70 | 1669 | 16384 |
| São Vicente | city | Piaui | Brazil | -7.22 | -42.92 | 830 | 355 |
| São Vicente | city | Piaui | Brazil | -3.27 | -42.05 | 6 | 1369 |
| São Vicente de Dentro | city | Piaui | Brazil | -5.83 | -42.88 | 830 | 596 |
| São Vincente | city | Piaui | Brazil | -5.83 | -42.92 | 830 | 596 |