Mont Alto Pennsylvania ZIP Codes
Mont Alto holds a single ZIP code.
Every ZIP code in Mont Alto
| ZIP code | County |
|---|---|
| 17237 | Franklin 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Mont Alto codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Mont Alto. 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 Mont Alto ZIP code begins 172. Those first three digits identify the sectional center facility that processes mail for this part of Pennsylvania. Statewide that range covers 52 ZIP codes, so Mont Alto accounts for 2% of it.
Every Pennsylvania ZIP prefix and the region it covers →
Area codes covering Mont Alto
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 Mont Alto occupies.
Mont Alto Pennsylvania area codes in full →
Where Mont Alto's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Mont Alto
| City | Distance | ZIP codes |
|---|---|---|
| Waynesboro Pennsylvania ZIP codes | 6.2 mi | 1 ZIP code |
| Chambersburg Pennsylvania ZIP codes | 8.2 mi | 2 ZIP codes |
| Greencastle Pennsylvania ZIP codes | 9.7 mi | 1 ZIP code |
| Fairfield Pennsylvania ZIP codes | 11 mi | 1 ZIP code |
| Shippensburg Pennsylvania ZIP codes | 15 mi | 1 ZIP code |
| Arendtsville Pennsylvania ZIP codes | 15 mi | 1 ZIP code |
| Orrstown Pennsylvania ZIP codes | 15 mi | 1 ZIP code |
| Gettysburg Pennsylvania ZIP codes | 17 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.