Union County, Arkansas

Union County is located in the southeast corner of Arkansas along the Louisiana border. Approximately 75,000 people live in the county, and U.S. Highway 82 runs through the area.

El Dorado, the county seat, was once at the center of Arkansas’s oil boom. Today, the city is developing as a cultural destination with the Murphy Arts District, which includes the annual MusicFest featuring well-known performers.

The Arkansas Museum of Natural Resources in Smackover highlights the region’s oil history. Lake Felsenthal National Wildlife Refuge also offers opportunities for fishing and wildlife viewing.

CategoryDetails
County NameUnion County
County SeatEl Dorado
EtymologyNamed after the petition of citizens in the spirit of “Union and Unity”
Cities, Towns, and CommunitiesEl Dorado, Camden, Huttig, Norphlet, Smackover
Interstates and HighwaysU.S. Highway 82, Arkansas Highway 7, 24
FIPS Code05-139
Total Area (Land and Water)1,058 square miles (Land: 1,048 sq mi, Water: 10 sq mi)
Adjacent Counties (and Direction)Ouachita County (Northwest), Calhoun County (North), Bradley County (Northeast), Ashley County (East), Morehouse Parish, Louisiana (Southeast), Union Parish, Louisiana (South), Claiborne Parish, Louisiana (Southwest), Columbia County (West)
Time ZoneCentral Standard Time (CST)
StateArkansas
Coordinates33.2024° N, 92.6653° W
Major LandmarksSouth Arkansas Arts Center, El Dorado’s Historic Downtown
PopulationApproximately 75,000
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