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Where am ILOCATED

Union County, Arkansas

Union County, Arkansas, has 36,926 residents (July 2025 estimate). Its county seat is El Dorado. It uses Central Time and covers 1,039 sq mi (2,691 km²) of land.

Little RockFayettevilleFort Smith
Union County in Arkansas
El DoradoSmackoverNorphletJunction CityStrong
Union County and its neighbors (simplified outlines). Open in OpenStreetMap ↗
Resident population, July 2025
36,926
Land area
1,039 sq mi (2,691 km²)
County seat or government
El Dorado
Time zone
Central TimeUTC-06:00 in January; UTC-05:00 in July
Median household income
$55,259 ± $4,567
Median home value
$120,900 ± $7,707
Median rent, with utilities
$847 ± $37
Homes lived in by their owners
72.7% ± 2.5 points
County type
County
Metro or micro area
El Dorado, AR micro areaCentral county
Water area
16.3 sq mi (42.1 km²)
State
Arkansas
County code (FIPS)
05139
Coordinates (central point)
33.168219, -92.598145
Open this point in the location finder

These coordinates mark a central point for the area, not a street address. Income, home value, rent and homes lived in by their owners: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, ± margin at 90% confidence; checked on October 13, 2026.

Time zones in Union County

Time zoneLocal time and UTC offsetNext clock change
Central TimeAmerica/ChicagoUTC-06:00 in January; UTC-05:00 in July. Enable JavaScript for the live clock.Enable JavaScript for upcoming changes.

Near a time-zone line, check where you are with the time-zone finder. Your phone’s setting can differ.

ZIP Code areas, largest first

  1. 7173029,760 people
  2. 7175315,474 people
  3. 717622,929 people
  4. 717492,787 people
  5. 717651,742 people
  6. 717641,688 people
  7. 71747655 people
  8. 71759243 people
  9. 71758150 people
  10. 71724147 people

10 ZIP Code areas overlap Union County. People counts are 2020–2024 estimates for each whole ZIP area. Mailing ZIPs can differ; check an address with USPS ZIP Code Lookup.

Official county information

Union County government website ↗ is the next stop for county offices, tax, voting, jury and records information. A geographic lookup cannot determine eligibility, tax liability or a court obligation.

Townships in Union County, largest first

  1. El Dorado Township24,200 people
  2. Smackover Township2,863 people
  3. Norphlet Township1,665 people
  4. Franklin Township1,577 people
  5. Lapile Township1,406 people
  6. Johnson Township1,287 people
  7. Henderson Township1,166 people
  8. Harrison Township648 people
  9. Wesson Township571 people
  10. Jackson Township566 people
  11. Cornie Township524 people
  12. Tubal Township411 people
All 16
  1. Van Buren Township355 people
  2. Wilmington Township289 people
  3. Garner Township222 people
  4. Boone Township150 people

People counts are American Community Survey 2020–2024 5-year estimates. All townships in Arkansas, by county

School districts in Union County, largest first

  1. El Dorado School District23,061 people
  2. Smackover-Norphlet School District6,245 people
  3. Junction City School District3,258 people
  4. Parkers Chapel School District3,126 people
  5. Strong School District2,741 people

Districts with land in the county; a district can cross county lines. People counts are American Community Survey 2020–2024 5-year estimates. A district boundary doesn’t decide which school a student attends.

Cities, towns and communities, largest first

These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.

  1. El Dorado, Arkansas (city)17,115 people
  2. Smackover, Arkansas (city)2,419 people
  3. Norphlet, Arkansas (city)1,003 people
  4. Junction City, Arkansas (city)564 people
  5. Strong, Arkansas (city)434 people
  6. Huttig, Arkansas (city)401 people
  7. Calion, Arkansas (city)355 people
  8. Urbana, Arkansas (CDP)147 people
  9. Lawson, Arkansas (CDP)86 people
  10. Felsenthal, Arkansas (town)40 people
  11. Mount Holly, Arkansas (CDP)18 people

Bordering areas, nearest first

Distances are straight lines between map points.

  1. Union Parish, Louisiana27 mi southeast
  2. Calhoun County, Arkansas28 mi north
  3. Bradley County, Arkansas32 mi northeast
  4. Claiborne Parish, Louisiana33 mi southwest
  5. Ouachita County, Arkansas33 mi northwest
  6. Columbia County, Arkansas37 mi west
  7. Ashley County, Arkansas48 mi east
  8. Morehouse Parish, Louisiana52 mi southeast

Before using this answer on a form

Use a precise point for address-level questions. A device accuracy circle can cross a boundary; confirm tax, voting or jury details with the responsible office.

Find the county where you are now, check its ZIP area, or check the time zone where you are.

See this county on Census.gov ↗

Areas that only touch the edge

These areas meet the boundary only along a sliver. Most addresses here are not in them; for an address near the line, check with the county.