County · Pennsylvania · United States
Montgomery County ZIP codes
58 ZIP codes · 57 cities · FIPS 42091
Key facts
- State
- Pennsylvania (PA)
- FIPS code
- 42091
- Population
- 861,225
- Median household income
- $111,521
- Median age
- 41.1
- Land area
- 483 sq mi (1,250.9 km²)
- Population density
- 1,783 / sq mi
- Area codes
- 215, 267, 272, 445, 484, 570, 582, 610, 814, 835
Cities and ZIP codes in Montgomery County (57)
About this page
County figures are Census county-level values (ACS 5-year); the ZIP list shows the ZIPs whose primary county this is — a ZIP on a border can also serve neighbouring counties.
Sources: U.S. Census Bureau (2020 county relationship file, ACS 5-year) · GeoNames. Methodology.