Forest City Illinois ZIP Codes
Forest City holds a single ZIP code.
Every ZIP code in Forest City
| ZIP code | County |
|---|---|
| 61532 | Mason County |
We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP. USPS delivery-type products are licensed, and no clean-rights source maps ZIP codes to neighbourhoods — so the Forest City codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Forest City. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated . ZIP codes are delivery-route groupings, not areas; the boundaries implied by any ZIP map are approximations.
How these codes cluster
Every Forest City ZIP code begins 615. Those first three digits identify the sectional center facility that processes mail for this part of Illinois. Statewide that range covers 48 ZIP codes, so Forest City accounts for 2% of it.
Every Illinois ZIP prefix and the region it covers →
Area codes covering Forest City
ZIP codes and area codes are separate systems — one routes mail, the other routes calls — and they do not share boundaries. The codes below serve the same ground Forest City occupies.
Forest City Illinois area codes in full →
Where Forest City's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Forest City
| City | Distance | ZIP codes |
|---|---|---|
| Manito Illinois ZIP codes | 4.3 mi | 1 ZIP code |
| Topeka Illinois ZIP codes | 5.9 mi | 1 ZIP code |
| Liverpool Illinois ZIP codes | 9.0 mi | 1 ZIP code |
| Easton Illinois ZIP codes | 9.7 mi | 1 ZIP code |
| Green Valley Illinois ZIP codes | 10 mi | 1 ZIP code |
| South Pekin Illinois ZIP codes | 13 mi | 1 ZIP code |
| San Jose Illinois ZIP codes | 13 mi | 1 ZIP code |
| Havana Illinois ZIP codes | 13 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.