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ZIP codes in Blackford County

7 ZIPs touch Blackford County, Indiana. The blue dashed line is the county border; orange ZIPs reach into it.

7

ZIP codes

7

cross the county line

42,600

people in these ZIPs

92

counties in IN

Most people

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Blackford County ZIP list

More counties in Indiana

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Questions people actually ask

How many ZIP codes are in Blackford County, Indiana?

7 ZIP codes reach into Blackford County. 7 of them are only partly in the county and also cover a neighboring county.

Which ZIP code in Blackford County has the most people?

46952 (Marion) has about 18,189 residents, the most of any ZIP touching Blackford County, in the Census Bureau’s ACS 2020–2024 estimates.

Can a ZIP code be in Blackford 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 Blackford 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