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ZIP codes in Dickinson County

10 ZIPs touch Dickinson County, Iowa. The blue dashed line is the county border; orange ZIPs reach into it.

10

ZIP codes

5

cross the county line

26,167

people in these ZIPs

99

counties in IA

Most people

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Dickinson County ZIP list

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Questions people actually ask

How many ZIP codes are in Dickinson County, Iowa?

10 ZIP codes reach into Dickinson County. 5 of them are only partly in the county and also cover a neighboring county.

Which ZIP code in Dickinson County has the most people?

51360 (Spirit Lake) has about 8,653 residents, the most of any ZIP touching Dickinson County, in the Census Bureau’s ACS 2020–2024 estimates.

Can a ZIP code be in Dickinson 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 Dickinson 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