Millstadt Illinois ZIP Codes
Millstadt holds a single ZIP code.
Every ZIP code in Millstadt
| ZIP code | County |
|---|---|
| 62260 | St. Clair 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Millstadt codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Millstadt. 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 Millstadt ZIP code begins 622. Those first three digits identify the sectional center facility that processes mail for this part of Illinois. Statewide that range covers 79 ZIP codes, so Millstadt accounts for 1% of it.
Every Illinois ZIP prefix and the region it covers →
Area codes covering Millstadt
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 Millstadt occupies.
Millstadt Illinois area codes in full →
Where Millstadt's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Millstadt
| City | Distance | ZIP codes |
|---|---|---|
| Smithton Illinois ZIP codes | 6.0 mi | 1 ZIP code |
| Belleville Illinois ZIP codes | 6.6 mi | 5 ZIP codes |
| Columbia Illinois ZIP codes | 7.0 mi | 1 ZIP code |
| Dupo Illinois ZIP codes | 8.2 mi | 1 ZIP code |
| Waterloo Illinois ZIP codes | 8.8 mi | 1 ZIP code |
| Freeburg Illinois ZIP codes | 9.3 mi | 1 ZIP code |
| East Carondelet Illinois ZIP codes | 10 mi | 1 ZIP code |
| Fairview Heights Illinois ZIP codes | 11 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.