Illiopolis, IL ZIP code
The ZIP code for Illiopolis, Illinois is 62539. It is in Sangamon County.
- Population in these ZIPs
- 1,412
- Avg. median income
- $82,800population-weighted
- Typical home value
- $147,900population-weighted
- Metro area
- Springfield, IL
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Illiopolis, IL ZIP code list
| ZIP code | Population | Median income | Typical home value |
|---|---|---|---|
| 62539 | 1,412 | $82,750 | $147,900 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities near Illiopolis
- Niantic 5 mi
- Buffalo 6 mi
- Mount Auburn 7 mi
- Mount Pulaski 8 mi
- Harristown 8 mi
- Latham 9 mi
- Cornland 9 mi
- Lake Fork 9 mi
- Mechanicsburg 10 mi
- Warrensburg 11 mi
- Blue Mound 11 mi
- Dawson 11 mi
Frequently asked questions
What is the ZIP code for Illiopolis, IL?
The ZIP code for Illiopolis, IL is 62539.
What county is Illiopolis, Illinois in?
Illiopolis ZIP codes are in Sangamon County.