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| County : | Buffalo County |
| State : | South Dakota (SD) |
| Land Area : | 471.38 sq mi |
| Water Area : | 16.36 sq mi |
| Latitude : | 44.0443062 |
| Longitude : | -99.2039983 |
| Population (2010): | 1,912 |
| Population Estimate (2012) : | 1,950 |
| Population Density : | 4.06/sq mi |
| Housing Units (2012) : | 609 |
| Median Household Income (2012) : | $30,439 (South Dakota : $49,091, USA : $53,046) |
| Median Family Income (2012) : | $30,881 (South Dakota : $62,967, USA : $64,585) |
| Median House Price (2012) : | $61,900 (South Dakota : $129,800, USA : $181,400) |
Buffalo County Cities / Towns
| Fort Thompson (1,282) | Gann Valley (14) |
Buffalo County Zip Codes
| 57325 (3,054) | 57339 (1,525) | 57341 (151) |
| 57355 (1,352) | 57370 (814) |