Granite City Illinois ZIP Codes
Granite City holds a single ZIP code.
Every ZIP code in Granite City
| ZIP code | County |
|---|---|
| 62040 | Madison 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Granite City codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Granite 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 Granite City ZIP code begins 620. Those first three digits identify the sectional center facility that processes mail for this part of Illinois. Statewide that range covers 78 ZIP codes, so Granite City accounts for 1% of it.
Every Illinois ZIP prefix and the region it covers →
Area codes covering Granite 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 Granite City occupies.
Granite City Illinois area codes in full →
Where Granite City's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Granite City
| City | Distance | ZIP codes |
|---|---|---|
| Madison Illinois ZIP codes | 3.2 mi | 1 ZIP code |
| Venice Illinois ZIP codes | 4.6 mi | 1 ZIP code |
| Hartford Illinois ZIP codes | 6.1 mi | 1 ZIP code |
| South Roxana Illinois ZIP codes | 6.6 mi | 1 ZIP code |
| Collinsville Illinois ZIP codes | 7.4 mi | 1 ZIP code |
| Roxana Illinois ZIP codes | 7.7 mi | 1 ZIP code |
| Glen Carbon Illinois ZIP codes | 7.9 mi | 1 ZIP code |
| Caseyville Illinois ZIP codes | 8.5 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.