ZIP codes in Clinton County
17 ZIPs touch Clinton County, Michigan. The blue dashed line is the county border; orange ZIPs reach into it.
17
ZIP codes
12
cross the county line
189,400
people in these ZIPs
83
counties in MI
Most people
Clinton County ZIP list
More counties in Michigan
- Calhoun County25
- Cass County14
- Charlevoix County11
- Cheboygan County16
- Chippewa County20
- Clare County8
- Crawford County6
- Delta County13
- Dickinson County11
- Eaton County20
- Emmet County13
- Genesee County45
Questions people actually ask
How many ZIP codes are in Clinton County, Michigan?
17 ZIP codes reach into Clinton County. 12 of them are only partly in the county and also cover a neighboring county.
Which ZIP code in Clinton County has the most people?
48823 (East Lansing) has about 50,034 residents, the most of any ZIP touching Clinton County, in the Census Bureau’s ACS 2020–2024 estimates.
Can a ZIP code be in Clinton 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 Clinton 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