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ZIP codes in Cook County

6 ZIPs touch Cook County, Minnesota. The blue dashed line is the county border; orange ZIPs reach into it.

6

ZIP codes

0

cross the county line

5,635

people in these ZIPs

87

counties in MN

Most people

← All Minnesota ZIP codes

Cook County ZIP list

More counties in Minnesota

All 87 counties in Minnesota

Questions people actually ask

How many ZIP codes are in Cook County, Minnesota?

6 ZIP codes reach into Cook County. Every ZIP area here lies wholly inside the county.

Which ZIP code in Cook County has the most people?

55604 (Grand Marais) has about 3,719 residents, the most of any ZIP touching Cook County, in the Census Bureau’s ACS 2020–2024 estimates.

Can a ZIP code be in Cook 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 Cook 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