Marion County, Ohio ZIP codes
10 ZIP codes are in Marion County, plus 6 that cross in from neighboring counties. It's part of the Marion, OH micro area.
- ZIP codes
- 10
- Population in these ZIPs
- 65,284
- Avg. median income
- $58,300population-weighted
- Cities & towns
- 9
Click anywhere on the map to see which ZIP code it's in.
ZIP codes in Marion County
| ZIP code | City | Population | Median income | Typical home value |
|---|---|---|---|---|
| 43301 PO Box | Marion | — | — | — |
| 43302 | Marion | 53,702 | $55,057 | $170,400 |
| 43314 | Caledonia | 2,438 | $49,183 | $235,000 |
| 43322 | Green Camp | 437 | $56,250 | $144,000 |
| 43332 | La Rue | 2,173 | $81,382 | $215,500 |
| 43335 PO Box | Martel | — | — | — |
| 43337 | Morral | 625 | $70,833 | $216,900 |
| 43341 | New Bloomington | 953 | $54,836 | $209,700 |
| 43342 | Prospect | 3,836 | $84,803 | $268,600 |
| 43356 | Waldo | 1,120 | $92,870 | $307,800 |
ZIP codes partly in Marion County
These ZIP codes are mostly in a neighboring county but cover part of Marion County.
| ZIP code | City | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|
| 43315 | Cardington | Morrow County | 6,873 | $73,770 | $284,700 |
| 43323 | Harpster | Wyandot County | 598 | $56,667 | $200,300 |
| 43326 | Kenton | Hardin County | 12,573 | $63,785 | $181,900 |
| 43344 | Richwood | Union County | 6,173 | $80,909 | $258,000 |
| 44833 | Galion | Morrow County | 15,892 | $60,151 | $174,600 |
| 44849 | Nevada | Wyandot County | 2,195 | $69,902 | $185,000 |
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 Marion County
Nearby counties
Frequently asked questions
How many ZIP codes are in Marion County, Ohio?
10 ZIP codes are mainly in Marion County, and 6 more ZIP codes from neighboring areas reach partly into it.
What cities are in Marion County?
ZIP codes in Marion County use the city names Caledonia, Green Camp, La Rue, Marion, Martel, Morral, New Bloomington, Prospect and Waldo.
What metro area is Marion County in?
Marion County is part of the Marion, OH micropolitan statistical area.