Union County, Ohio ZIP codes
9 ZIP codes are in Union County, plus 13 that cross in from neighboring counties. It's part of the Columbus, OH metro area.
- ZIP codes
- 9
- Population in these ZIPs
- 51,752
- Avg. median income
- $96,400population-weighted
- Cities & towns
- 8
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 |
|---|---|---|---|---|
| 43007 | Broadway | 63 | — | $180,600 |
| 43036 | Magnetic Springs | 359 | $77,813 | $164,900 |
| 43040 | Marysville | 38,990 | $99,321 | $369,900 |
| 43041 PO Box | Marysville | — | — | — |
| 43045 | Milford Center | 1,739 | $99,181 | $311,500 |
| 43067 | Raymond | 1,884 | $95,903 | $313,000 |
| 43077 | Unionville Center | 269 | $104,545 | $225,700 |
| 43344 | Richwood | 6,173 | $80,909 | $258,000 |
| 43358 | West Mansfield | 2,275 | $89,121 | $271,000 |
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 |
|---|---|---|---|---|---|
| 43015 | Delaware | Delaware County | 61,401 | $105,322 | $413,500 |
| 43016 | Dublin | Franklin County | 46,362 | $109,972 | $430,600 |
| 43017 | Dublin | Franklin County | 41,613 | $135,922 | $577,800 |
| 43029 | Irwin | Madison County | 544 | $107,744 | $354,400 |
| 43060 | North Lewisburg | Champaign County | 2,359 | $62,014 | $265,900 |
| 43061 | Ostrander | Delaware County | 4,921 | $157,568 | $507,600 |
| 43064 | Plain City | Madison County | 18,143 | $139,591 | $544,300 |
| 43084 | Woodstock | Champaign County | 991 | $78,008 | $263,400 |
| 43302 | Marion | Marion County | 53,702 | $55,057 | $170,400 |
| 43319 | East Liberty | Logan County | 851 | $136,141 | $295,400 |
| 43340 | Mount Victory | Hardin County | 2,103 | $72,446 | $227,100 |
| 43342 | Prospect | Marion County | 3,836 | $84,803 | $268,600 |
| 43345 | Ridgeway | Logan County | 666 | $90,821 | $251,900 |
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, Ohio?
9 ZIP codes are mainly in Union County, and 13 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 Broadway, Magnetic Springs, Marysville, Milford Center, Raymond, Richwood, Unionville Center and West Mansfield.
What metro area is Union County in?
Union County is part of the Columbus, OH metropolitan statistical area.