West Mifflin Pennsylvania ZIP Codes
West Mifflin holds 2 ZIP codes, all inside one county and one postal prefix.
Every ZIP code in West Mifflin
| ZIP code | County |
|---|---|
| 15122 | Allegheny County |
| 15123 | Allegheny 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 West Mifflin codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for West Mifflin. 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 West Mifflin ZIP code begins 151. Those first three digits identify the sectional center facility that processes mail for this part of Pennsylvania. Statewide that range covers 30 ZIP codes, so West Mifflin accounts for 7% of it.
Every Pennsylvania ZIP prefix and the region it covers →
Area codes covering West Mifflin
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 West Mifflin occupies.
West Mifflin Pennsylvania area codes in full →
Where West Mifflin's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near West Mifflin
| City | Distance | ZIP codes |
|---|---|---|
| Dravosburg Pennsylvania ZIP codes | 0.9 mi | 1 ZIP code |
| Glassport Pennsylvania ZIP codes | 2.4 mi | 1 ZIP code |
| Duquesne Pennsylvania ZIP codes | 3.1 mi | 1 ZIP code |
| Liberty Pennsylvania ZIP codes | 3.3 mi | 1 ZIP code |
| Mckeesport Pennsylvania ZIP codes | 3.4 mi | 5 ZIP codes |
| Homestead Pennsylvania ZIP codes | 3.4 mi | 1 ZIP code |
| Braddock Pennsylvania ZIP codes | 3.6 mi | 1 ZIP code |
| Clairton Pennsylvania ZIP codes | 4.3 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.