Union County, Arkansas ZIP codes
10 ZIP codes are in Union County, plus 2 that cross in from neighboring counties. It's part of the El Dorado, AR micro area.
- ZIP codes
- 10
- Population in these ZIPs
- 38,413
- Avg. median income
- $55,500population-weighted
- Cities & towns
- 9
Click anywhere on the map to see which ZIP code it's in.
ZIP codes in Union County
| ZIP code | City | Population | Median income | Typical home value |
|---|---|---|---|---|
| 71724 | Calion | 147 | $26,346 | $81,700 |
| 71730 | El Dorado | 29,760 | $55,770 | $134,200 |
| 71731 PO Box | El Dorado | — | — | — |
| 71747 | Huttig | 655 | $61,208 | $83,600 |
| 71749 | Junction City | 2,787 | $68,188 | $118,600 |
| 71750 PO Box | Lawson | — | — | — |
| 71758 | Mount Holly | 150 | — | $59,000 |
| 71759 | Norphlet | 243 | — | $311,600 |
| 71762 | Smackover | 2,929 | $50,577 | $120,400 |
| 71765 | Strong | 1,742 | $38,636 | $49,200 |
ZIP codes partly in Union County
These ZIP codes are mostly in a neighboring county but cover part of Union County.
| ZIP code | City | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|
| 71753 | Magnolia | Columbia County | 15,474 | $50,504 | $137,500 |
| 71764 | Stephens | Ouachita County | 1,688 | $62,308 | $72,000 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities and towns in Union County
Nearby counties
Frequently asked questions
How many ZIP codes are in Union County, Arkansas?
10 ZIP codes are mainly in Union County, and 2 more ZIP codes from neighboring areas reach partly into it.
What cities are in Union County?
ZIP codes in Union County use the city names Calion, El Dorado, Huttig, Junction City, Lawson, Mount Holly, Norphlet, Smackover and Strong.
What metro area is Union County in?
Union County is part of the El Dorado, AR micropolitan statistical area.