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> South Dakota > Union County
| County : | Union County |
| State : | South Dakota (SD) |
| Land Area : | 460.54 sq mi |
| Water Area : | 6.59 sq mi |
| Latitude : | 42.8311064 |
| Longitude : | -96.6508287 |
| Population (2010): | 14,399 |
| Population Estimate (2012) : | 14,377 |
| Population Density : | 31.27/sq mi |
| Housing Units (2012) : | 6,280 |
| Median Household Income (2012) : | $64,496 (South Dakota : $49,091, USA : $53,046) |
| Median Family Income (2012) : | $75,830 (South Dakota : $62,967, USA : $64,585) |
| Median House Price (2012) : | $145,700 (South Dakota : $129,800, USA : $181,400) |
Union County Cities / Towns
| Alcester City (807) | Beresford City (2,005) | Dakota Dunes (2,540) |
| Elk Point City (1,963) | Jefferson City (547) | North Sioux City (2,530) |
| Richland (89) |
Union County Zip Codes
| 51001 (2,432) | 51023 (3,216) | 57001 (1,672) |
| 57004 (3,356) | 57010 (493) | 57025 (2,795) |
| 57034 (712) | 57038 (1,667) | 57049 (5,789) |