Janesville ZIP code, Illinois
The ZIP code for Janesville, IL is 62435, and its area code is 217.
- USPS city name
- 1 ZIP code
- Overlapping the city
- 1 more
- Population
- 39
- Area code
- 217
- County
- Cumberland County
- State
- Illinois
NANPA lists no telephone rate centre for Janesville itself, so these are the area codes of the nearest one, Toledo (6.9 miles). A town on an area-code boundary can differ from its neighbour.
Mail addressed to Janesville uses the ZIP code above. 1 more ZIP code covers part of the city but is addressed as somewhere else; they are listed separately below.
ZIP codes addressed as Janesville
| ZIP | City | Type |
|---|---|---|
62435 | Janesville , IL | No street area |
Other ZIP codes overlapping Janesville
These ZIP codes cover part of Janesville but are addressed as somewhere else.
| ZIP | City | Type | Population | Median income | Median home |
|---|---|---|---|---|---|
62440 | Lerna , IL | Standard | 1,107 | $79,605 | $128,000 |
Towns near Janesville
The nearest larger towns are Lerna (226 people, 3.8 mi), Trilla (122 people, 5.6 mi) and Toledo (1,197 people, 7.1 mi).
| Town | Population | Distance |
|---|---|---|
| Charleston | 17,062 | 8.4 mi |
| Mattoon | 16,586 | 9.5 mi |
| Arcola | 2,892 | 21.5 mi |
| Effingham | 12,342 | 24.0 mi |
| Sullivan | 4,348 | 24.6 mi |
| Newton | 2,932 | 27.2 mi |
| Tuscola | 4,808 | 29.1 mi |
| Marshall | 4,040 | 29.6 mi |
| Shelbyville | 4,351 | 29.7 mi |
More nearby: every ZIP code in Cumberland County · Illinois ZIP codes
Cite this page
zipcodes.pro. “Janesville, IL ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/il/janesville
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