ZIP codes in Greene County
14 ZIPs touch Greene County, Illinois. The blue dashed line is the county border; orange ZIPs reach into it.
14
ZIP codes
6
cross the county line
25,991
people in these ZIPs
102
counties in IL
Most people
Greene County ZIP list
More counties in Illinois
- Effingham County15
- Fayette County21
- Ford County21
- Franklin County20
- Fulton County24
- Gallatin County9
- Grundy County16
- Hamilton County13
- Hancock County21
- Hardin County6
- Henderson County17
- Henry County24
Questions people actually ask
How many ZIP codes are in Greene County, Illinois?
14 ZIP codes reach into Greene County, including 1 PO Box or single-address ZIPs placed by the town they serve. 6 of them are only partly in the county and also cover a neighboring county.
Which ZIP code in Greene County has the most people?
62052 (Jerseyville) has about 12,237 residents, the most of any ZIP touching Greene County, in the Census Bureau’s ACS 2020–2024 estimates.
Can a ZIP code be in Greene 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 Greene 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