ZIP code · Illiopolis · Illinois · United States
ZIP code 62539 — Illiopolis
ZIP code 62539 serves Illiopolis, Illinois.
- Postal code
- 62539Single source Value from one source, not cross-checked.
- City
- Illiopolis
- County
- Sangamon FIPS 17167
- State
- Illinois
- Country
- United States
- Coordinates
- 39.8499, -89.2513 — precision precise (locality)
View on OpenStreetMap - Population
- 1,342 (ZCTA, ACS 5-year)
- Population density
- 29 / sq mi
- Land area
- 46.4 sq mi (120.1 km²) (ZCTA, ACS 5-year)
- Median household income
- $88,583
- Per-capita income
- $37,503
- Median age
- 40
- Households
- 535
- Housing units
- 561
- Median home value
- $108,300
- Median gross rent
- $675 / month
- Congressional district
- IL-13 (119th Congress)
- USDA hardiness zone
- 6a (-10 to -5 °F)Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
- Time zone
- America/Chicago (UTC−6 / UTC−5 DST)
Tools: compare 62539 with another ZIP · ZIPs within 25 miles · distance from 62539
Map of ZIP code 62539
Climate — monthly normals
Warmest month Jul (avg high 85°F), coldest Jan (avg low 20°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 34 | 39 | 51 | 63 | 74 | 82 | 85 | 84 | 78 | 65 | 50 | 39 |
| Avg low °F | 20 | 24 | 33 | 43 | 54 | 63 | 67 | 65 | 57 | 46 | 34 | 25 |
| Precip in | 2.4 | 2.0 | 2.6 | 4.1 | 5.0 | 4.7 | 4.0 | 3.5 | 3.1 | 3.4 | 3.2 | 2.4 |
NOAA 1991–2020 climate normals from the nearest station: DECATUR WTP (16.0 mi) · NOAA NCEI
Places in ZIP 62539
- 1 schools
- 1 supermarkets
- 1 parks
- 2 playgrounds
- 1 gyms & sports centres
- 1 libraries
- 1 post offices
- 1 police & fire stations
Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology
About this page
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames · U.S. Census Bureau (ACS) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page