Thornton Illinois ZIP Codes
Thornton holds a single ZIP code.
Every ZIP code in Thornton
| ZIP code | County |
|---|---|
| 60476 | Cook 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Thornton codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Thornton. 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 Thornton ZIP code begins 604. Those first three digits identify the sectional center facility that processes mail for this part of Illinois. Statewide that range covers 83 ZIP codes, so Thornton accounts for 1% of it.
Every Illinois ZIP prefix and the region it covers →
Area codes covering Thornton
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 Thornton occupies.
Thornton Illinois area codes in full →
Where Thornton's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Thornton
| City | Distance | ZIP codes |
|---|---|---|
| South Holland Illinois ZIP codes | 1.9 mi | 1 ZIP code |
| Glenwood Illinois ZIP codes | 2.3 mi | 1 ZIP code |
| Homewood Illinois ZIP codes | 2.4 mi | 1 ZIP code |
| Harvey Illinois ZIP codes | 2.9 mi | 1 ZIP code |
| Hazel Crest Illinois ZIP codes | 3.6 mi | 1 ZIP code |
| Lansing Illinois ZIP codes | 3.8 mi | 1 ZIP code |
| Dolton Illinois ZIP codes | 4.0 mi | 1 ZIP code |
| Markham Illinois ZIP codes | 4.1 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.