| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Sangradouro | city | Piaui | Brazil | -5.13 | -42.72 | 318 | 201288 |
| Sangradouro | city | Piaui | Brazil | -6.38 | -42.23 | 830 | 1318 |
| Sanharó | city | Piaui | Brazil | -6.98 | -40.63 | 1837 | 257 |
| Santa Adelaide | city | Piaui | Brazil | -4.70 | -41.98 | 830 | 1239 |
| Santa Barbara | city | Piaui | Brazil | -5.04 | -42.73 | 830 | 193561 |
| Santa Cecilia | city | Piaui | Brazil | -6.30 | -42.13 | 830 | 596 |
| Santa Clara | city | Piaui | Brazil | -5.10 | -42.75 | 324 | 205404 |
| Santa Cruz | city | Piaui | Brazil | -5.16 | -42.79 | 328 | 168574 |
| Santa Cruz | city | Piaui | Brazil | -10.17 | -45.47 | 2004 | 149 |
| Santa Cruz | city | Piaui | Brazil | -5.80 | -41.94 | 830 | 5924 |
| Santa Cruz | city | Piaui | Brazil | -6.98 | -41.10 | 1000 | 5638 |
| Santa Cruz do Piauí | city | Piaui | Brazil | -7.18 | -41.76 | 830 | 1804 |
| Santa Cruz dos Milagres | city | Piaui | Brazil | -5.80 | -41.94 | 830 | 5924 |
| Santa Fe | city | Piaui | Brazil | -5.48 | -42.70 | 830 | 1075 |
| Santa Filomena | city | Piaui | Brazil | -9.12 | -45.92 | 935 | 10434 |
| Santa Fé de Boiadeiro | city | Piaui | Brazil | -7.39 | -43.78 | 846 | 194 |
| Santa Gertrudes | city | Piaui | Brazil | -6.95 | -37.38 | 1040 | 1461 |
| Santa Helena | city | Piaui | Brazil | -6.37 | -42.05 | 830 | 1342 |
| Santa Helena | city | Piaui | Brazil | -5.06 | -42.82 | 160 | 176951 |
| Santa Isabel | city | Piaui | Brazil | -2.88 | -41.80 | 3 | 42034 |
| Santa Izabel | city | Piaui | Brazil | -5.08 | -42.76 | 341 | 205404 |
| Santa Joana Darc | city | Piaui | Brazil | -5.07 | -42.75 | 347 | 205404 |
| Santa Luz | city | Piaui | Brazil | -8.95 | -44.13 | 905 | 481 |
| Santa Luzia | city | Piaui | Brazil | -8.03 | -43.02 | 872 | 27 |
| Santa Luzia | city | Piaui | Brazil | -7.77 | -41.57 | 1000 | 596 |
| Santa Maria | city | Piaui | Brazil | -5.02 | -41.93 | 830 | 1071 |
| Santa Maria | city | Piaui | Brazil | -2.98 | -41.33 | 13 | 2317 |
| Santa Maria | city | Piaui | Brazil | -8.14 | -42.13 | 902 | 447 |
| Santa Maria | city | Piaui | Brazil | -5.16 | -42.79 | 328 | 158858 |
| Santa Maria | city | Piaui | Brazil | -3.78 | -42.52 | 239 | 2036 |
| Santa Maria | city | Piaui | Brazil | -7.25 | -41.57 | 830 | 3608 |
| Santa Maria | city | Piaui | Brazil | -3.95 | -42.45 | 328 | 1402 |
| Santa Maria de Jesus | city | Piaui | Brazil | -5.07 | -42.75 | 377 | 205404 |
| Santa Philomena | city | Piaui | Brazil | -9.12 | -45.92 | 935 | 10434 |
| Santa Rita | city | Piaui | Brazil | -5.03 | -42.67 | 830 | 85484 |
| Santa Rita | city | Piaui | Brazil | -6.55 | -41.95 | 1046 | 1733 |
| Santa Rita | city | Piaui | Brazil | -5.58 | -42.70 | 830 | 614 |
| Santa Rita | city | Piaui | Brazil | -8.05 | -42.05 | 994 | 447 |
| Santa Rita | city | Piaui | Brazil | -5.75 | -41.82 | 830 | 115 |
| Santa Rosa | city | Piaui | Brazil | -5.47 | -42.80 | 830 | 3747 |
| Santa Rosa | city | Piaui | Brazil | -8.37 | -43.85 | 830 | 298 |
| Santa Rosa | city | Piaui | Brazil | -3.88 | -42.40 | 334 | 1532 |
| Santa Rosa | city | Piaui | Brazil | -6.65 | -41.82 | 1040 | 602 |
| Santa Rosa | city | Piaui | Brazil | -4.45 | -42.72 | 830 | 1304 |
| Santa Rosa | city | Piaui | Brazil | -7.03 | -43.93 | 892 | 729 |
| Santa Rosa | city | Piaui | Brazil | -3.28 | -41.43 | 830 | 596 |
| Santa Rosa 1 | city | Piaui | Brazil | -6.33 | -41.70 | 1026 | 2304 |
| Santa Rosa 2 | city | Piaui | Brazil | -6.55 | -41.92 | 954 | 1535 |
| Santa Teresa | city | Piaui | Brazil | -9.15 | -42.27 | 1213 | 347 |
| Santa Teresa | city | Piaui | Brazil | -9.72 | -45.57 | 1145 | 23 |
| Santa Teresa | city | Piaui | Brazil | -8.78 | -41.52 | 1669 | 392 |
| Santa Teresa | city | Piaui | Brazil | -9.35 | -43.95 | 1669 | 0 |
| Santa Teresa | city | Piaui | Brazil | -9.48 | -45.78 | 948 | 0 |
| Santa Teresinha | city | Piaui | Brazil | -5.05 | -42.74 | 830 | 205401 |
| Santa Tereza | city | Piaui | Brazil | -9.48 | -45.78 | 948 | 0 |
| Santa Tereza | city | Piaui | Brazil | -5.62 | -42.75 | 830 | 1114 |
| Santa Tereza | city | Piaui | Brazil | -7.05 | -43.12 | 830 | 298 |
| Santa Ursula | city | Piaui | Brazil | -4.83 | -41.98 | 830 | 894 |
| Santa Vitória | city | Piaui | Brazil | -5.00 | -42.78 | 328 | 157393 |
| Santana | city | Piaui | Brazil | -5.17 | -42.67 | 830 | 75319 |
| Santana | city | Piaui | Brazil | -7.43 | -41.17 | 967 | 1128 |
| Santana | city | Piaui | Brazil | -5.32 | -41.10 | 1863 | 4397 |
| Santana | city | Piaui | Brazil | -8.65 | -43.97 | 830 | 577 |
| Santana | city | Piaui | Brazil | -4.15 | -41.15 | 1246 | 764 |
| Santana | city | Piaui | Brazil | -5.57 | -41.35 | 1669 | 512 |
| Santana | city | Piaui | Brazil | -9.07 | -42.13 | 1000 | 298 |
| Santana 1 | city | Piaui | Brazil | -6.10 | -41.87 | 1049 | 582 |
| Santana 2 | city | Piaui | Brazil | -6.60 | -41.93 | 1056 | 1549 |
| Santana 3 | city | Piaui | Brazil | -6.70 | -41.25 | 1669 | 982 |
| Santelo | city | Piaui | Brazil | -6.52 | -41.32 | 1148 | 287 |
| Santiago | city | Piaui | Brazil | -7.93 | -41.98 | 941 | 683 |
| Santiago | city | Piaui | Brazil | -6.90 | -41.08 | 1669 | 1324 |
| Santo Aleixo | city | Piaui | Brazil | -6.62 | -42.68 | 830 | 3048 |
| Santo Amaro | city | Piaui | Brazil | -5.78 | -41.23 | 1669 | 19 |
| Santo Antonio | city | Piaui | Brazil | -4.12 | -42.57 | 328 | 596 |
| Santo Antonio | city | Piaui | Brazil | -6.55 | -41.27 | 1669 | 157 |
| Santo Antonio | city | Piaui | Brazil | -8.08 | -43.93 | 830 | 447 |
| Santo Antonio | city | Piaui | Brazil | -10.48 | -44.13 | 1669 | 447 |
| Santo Antonio 1 | city | Piaui | Brazil | -6.02 | -41.95 | 1062 | 250 |
| Santo Antonio 1 | city | Piaui | Brazil | -7.98 | -41.53 | 958 | 565 |
| Santo Antonio 2 | city | Piaui | Brazil | -7.33 | -40.80 | 1669 | 2141 |
| Santo Antonio de Lisboa | city | Piaui | Brazil | -6.98 | -41.23 | 931 | 1988 |
| Santo Antônio | city | Piaui | Brazil | -9.02 | -42.77 | 1669 | 3105 |
| Santo Estevao | city | Piaui | Brazil | -7.50 | -45.10 | 830 | 48 |
| Santo Eugenio | city | Piaui | Brazil | -8.18 | -41.81 | 1187 | 744 |
| Santo Inácio do Piauí | city | Piaui | Brazil | -7.43 | -41.91 | 830 | 454 |
| Santo-Engenio | city | Piaui | Brazil | -8.18 | -41.81 | 1187 | 744 |
| Santos | city | Piaui | Brazil | -7.07 | -43.13 | 830 | 298 |
| Santos Reis | city | Piaui | Brazil | -5.58 | -41.25 | 1669 | 0 |