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ZIP codes in Genesee County

21 ZIPs touch Genesee County, New York. The blue dashed line is the county border; orange ZIPs reach into it.

21

ZIP codes

14

cross the county line

93,847

people in these ZIPs

62

counties in NY

Most people

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Genesee County ZIP list

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Questions people actually ask

How many ZIP codes are in Genesee County, New York?

21 ZIP codes reach into Genesee County, including 1 PO Box or single-address ZIPs placed by the town they serve. 14 of them are only partly in the county and also cover a neighboring county.

Which ZIP code in Genesee County has the most people?

14020 (Batavia) has about 22,002 residents, the most of any ZIP touching Genesee County, in the Census Bureau’s ACS 2020–2024 estimates.

Can a ZIP code be in Genesee 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 Genesee 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