West Middlesex Pennsylvania ZIP Codes
West Middlesex holds a single ZIP code.
Every ZIP code in West Middlesex
| ZIP code | County |
|---|---|
| 16159 | Mercer 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Middlesex codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for West Middlesex. 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 Middlesex ZIP code begins 161. Those first three digits identify the sectional center facility that processes mail for this part of Pennsylvania. Statewide that range covers 45 ZIP codes, so West Middlesex accounts for 2% of it.
Every Pennsylvania ZIP prefix and the region it covers →
Area codes covering West Middlesex
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 Middlesex occupies.
West Middlesex Pennsylvania area codes in full →
Where West Middlesex's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near West Middlesex
| City | Distance | ZIP codes |
|---|---|---|
| Wheatland Pennsylvania ZIP codes | 2.6 mi | 1 ZIP code |
| Farrell Pennsylvania ZIP codes | 3.3 mi | 1 ZIP code |
| Hermitage Pennsylvania ZIP codes | 3.9 mi | 1 ZIP code |
| Sharon Pennsylvania ZIP codes | 4.7 mi | 1 ZIP code |
| Sharpsville Pennsylvania ZIP codes | 6.0 mi | 1 ZIP code |
| New Wilmington Pennsylvania ZIP codes | 7.5 mi | 2 ZIP codes |
| Clark Pennsylvania ZIP codes | 8.3 mi | 1 ZIP code |
| Volant Pennsylvania ZIP codes | 11 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.