There are 8 zip codes in Union County, Ohio. The most populated is 43040, located in Marysville. * 2024 populations estimated based on the latest ACS 5-year data.
Zip Code | City | Population |
---|---|---|
43040 | Marysville | 36,678 |
43344 | Richwood | 6,119 |
43358 | West Mansfield | 2,608 |
43045 | Milford Center | 1,775 |
43067 | Raymond | 1,360 |
43036 | Magnetic Springs | 306 |
43077 | Unionville Center | 277 |
43007 | Broadway | 43 |