Union County, Ohio ZIP Codes

8 ZIP Codes

Zip Code
City
Population ↓
43040Marysville38,990
43344Richwood6,173
43358West Mansfield2,275
43067Raymond1,884
43045Milford Center1,739
43036Magnetic Springs359
43077Unionville Center269
43007Broadway63

Overview of ZIP Codes in Union County

ZCTAs are geographic areas created by the US Census Bureau to approximate the delivery areas of ZIP Codes for statistical analysis. While ZCTAs use the same five-digit codes as ZIP Codes, they represent defined geographic areas that may not exactly match the mail delivery routes of ZIP Codes.
8
ZIP Codes

The data shown reflect ZCTAs from the US Census. As of 2025, there are 8 ZCTAs in Union County, Ohio (US Census).

Sources

  1. US Census: 2025 Gazetteer Files
  2. US Census: ZIP Code Tabulation Areas (ZCTAs)

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