South Milwaukee Wisconsin ZIP Codes
South Milwaukee holds a single ZIP code.
Every ZIP code in South Milwaukee
| ZIP code | County |
|---|---|
| 53172 | Milwaukee 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Milwaukee codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for South Milwaukee. 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 Milwaukee ZIP code begins 531. Those first three digits identify the sectional center facility that processes mail for this part of Wisconsin. Statewide that range covers 66 ZIP codes, so South Milwaukee accounts for 2% of it.
Every Wisconsin ZIP prefix and the region it covers →
Area codes covering South Milwaukee
ZIP codes and area codes are separate systems — one routes mail, the other routes calls — and they do not share boundaries. The code below serves the same ground South Milwaukee occupies.
South Milwaukee Wisconsin area codes in full →
Where South Milwaukee's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near South Milwaukee
| City | Distance | ZIP codes |
|---|---|---|
| Cudahy Wisconsin ZIP codes | 2.4 mi | 1 ZIP code |
| Oak Creek Wisconsin ZIP codes | 3.0 mi | 1 ZIP code |
| Greendale Wisconsin ZIP codes | 7.3 mi | 1 ZIP code |
| Franklin Wisconsin ZIP codes | 7.8 mi | 1 ZIP code |
| Caledonia Wisconsin ZIP codes | 8.0 mi | 1 ZIP code |
| Hales Corners Wisconsin ZIP codes | 9.7 mi | 1 ZIP code |
| Milwaukee Wisconsin ZIP codes | 12 mi | 41 ZIP codes |
| Racine Wisconsin ZIP codes | 13 mi | 8 ZIP codes |
Straight-line distance between place reference points, not driving distance.