Union County
Sign in to savecounty in Arkansas, United States
Key facts
- Country
- United States
- State
- Arkansas
- Founded
- November 2, 1829
- Seat
- El Dorado
- Largest city
- El Dorado
- Total
- 1,055 sq mi (2,730 km )
- Land
- 1,039 sq mi (2,690 km )
- Water
- 16 sq mi (41 km ) 1.5%
- Estimate 2025
- 36,926
- Density
- 37.59/sq mi (14.51/km )
- Time zone
- UTC−6 ( Central )
- Summer dst
- UTC−5 ( CDT )
- Congressional district
- 4th
- Website
- www .unioncountyar .com
via Wikipedia infobox
Article
Confederate monument at Union County Courthouse
Union County is a county located on the central southern border of the U.S. state of Arkansas. As of the 2020 census, the population was 39,054. The county seat is El Dorado. The county was formed on November 2, 1829, and named in recognition of the citizens' petition for a new county, which said that they were petitioning "in the spirit of Union and Unity." The county is directly adjacent to the south to Union Parish in the state of Louisiana. The El Dorado, AR Micropolitan Statistical Area includes all of Union County.