COUNTY · AR
Ouachita County, Arkansas
Ouachita County is a county in Arkansas with FIPS code 05103 and an estimated population of 21,793 (Census 2023), 29th largest of 75 in the state.
County facts
- Name
- Ouachita County
- State
- Arkansas
- Type
- county
- FIPS code
- 05103
- State FIPS
- 05
- Population (2023)
- 21,793
- Change since 2020
- -3.6%
- State rank
- 29 of 75
Population is the Census Bureau’s Vintage 2023 estimate.
Questions
What is the FIPS code for Ouachita County?
Ouachita County, Arkansas has the five-digit FIPS code 05103: 05 for the state and 103 for the county.
What state is Ouachita County in?
Ouachita County is in Arkansas.
How do I know if an address is in this county?
Use the address lookup. ZIP codes and city names can cross county lines, so an address is the reliable check.
Sources: U.S. Census Bureau geographic reference files; Census Bureau Population Estimates, Vintage 2023. Last reviewed 2026-10-27.