| County : | Union County |
| State : | Arkansas (AR) |
| Land Area : | 1,039.21 sq mi |
| Water Area : | 15.99 sq mi |
| Latitude : | 33.1682186 |
| Longitude : | -92.5981447 |
| Population (2010): | 41,639 |
| Population Estimate (2012) : | 41,594 |
| Population Density : | 40.07/sq mi |
| Housing Units (2012) : | 19,653 |
| Median Household Income (2012) : | $39,349 (Arkansas : $40,531, USA : $53,046) |
| Median Family Income (2012) : | $48,013 (Arkansas : $50,453, USA : $64,585) |
| Median House Price (2012) : | $74,200 (Arkansas : $106,300, USA : $181,400) |
Union County Cities / Towns
| Calion City (494) | El Dorado City (18,884) | Felsenthal Town (150) |
| Huttig City (597) | Junction City (581) | Norphlet City (844) |
| Smackover City (1,865) | Strong City (558) |
Union County Zip Codes
| 71724 (431) | 71730 (32,213) | 71747 (1,097) |
| 71749 (2,595) | 71753 (16,848) | 71758 (450) |
| 71759 (600) | 71762 (2,501) | 71765 (2,156) |