South Beloit Illinois ZIP Codes
South Beloit holds a single ZIP code.
Every ZIP code in South Beloit
| ZIP code | County |
|---|---|
| 61080 | Winnebago 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 South Beloit codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for South Beloit. 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 South Beloit ZIP code begins 610. Those first three digits identify the sectional center facility that processes mail for this part of Illinois. Statewide that range covers 66 ZIP codes, so South Beloit accounts for 2% of it.
Every Illinois ZIP prefix and the region it covers →
Area codes covering South Beloit
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 South Beloit occupies.
South Beloit Illinois area codes in full →
Where South Beloit's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near South Beloit
| City | Distance | ZIP codes |
|---|---|---|
| Rockton Illinois ZIP codes | 3.2 mi | 1 ZIP code |
| Roscoe Illinois ZIP codes | 4.2 mi | 1 ZIP code |
| Machesney Park Illinois ZIP codes | 8.1 mi | 1 ZIP code |
| Loves Park Illinois ZIP codes | 10 mi | 4 ZIP codes |
| Caledonia Illinois ZIP codes | 11 mi | 1 ZIP code |
| Poplar Grove Illinois ZIP codes | 13 mi | 1 ZIP code |
| Durand Illinois ZIP codes | 16 mi | 1 ZIP code |
| Rockford Illinois ZIP codes | 16 mi | 14 ZIP codes |
Straight-line distance between place reference points, not driving distance.