ZIP codes in Adams County

13 ZIPs touch Adams County, Ohio. The blue dashed line is the county border; orange ZIPs reach into it.

ZIP codes

cross the county line

36,800

people in these ZIPs

counties in OH

Most people

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Adams County ZIP list

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All 88 counties in Ohio

Questions people actually ask

How many ZIP codes are in Adams County, Ohio?

13 ZIP codes reach into Adams County. 9 of them are only partly in the county and also cover a neighboring county.

Which ZIP code in Adams County has the most people?

45693 (West Union) has about 8,714 residents, the most of any ZIP touching Adams County, in the Census Bureau’s ACS 2020–2024 estimates.

Can a ZIP code be in Adams County and another county?

Yes. ZIP codes follow mail routes, not county lines. Rows marked with a percentage show how much of that ZIP’s land is in Adams County. For one address, pin the exact spot on the ZIP finder to see its county.

Where does this list come from?

ZIP areas and their county overlaps come from the Census Bureau’s 2020 ZIP Code Tabulation Area to county relationship file. PO Box ZIPs have no area, so each is placed in the county of the ZIP area nearest the town it serves.

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Updated 2026-11-10 · Where the data comes from