ZIP codes in Clinton County
12 ZIPs touch Clinton County, Indiana. The blue dashed line is the county border; orange ZIPs reach into it.
12
ZIP codes
10
cross the county line
90,340
people in these ZIPs
92
counties in IN
Most people
Clinton County ZIP list
More counties in Indiana
- Boone County13
- Brown County10
- Carroll County20
- Cass County13
- Clark County23
- Clay County18
- Crawford County10
- Daviess County7
- DeKalb County14
- Dearborn County9
- Decatur County12
- Delaware County23
Questions people actually ask
How many ZIP codes are in Clinton County, Indiana?
12 ZIP codes reach into Clinton County. 10 of them are only partly in the county and also cover a neighboring county.
Which ZIP code in Clinton County has the most people?
47905 (Lafayette) has about 42,219 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.
Keep exploring
Updated 2026-11-10 · Where the data comes from