Montgomery County, Pennsylvania

58 ZIP codes · 482.94 sq mi of land · FIPS 42091

Population	867,573
State	Pennsylvania
FIPS code	42091
Time zone	Eastern
Land area	482.94 sq mi
Center (lat, long)	40.2100, -75.3702

Area codes in this area

215 267 445 484 610 835

These are the area codes that most often serve Montgomery County (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.

Cities and towns (largest first)

Norristown · 35,893 Pottstown · 23,476 Lansdale · 19,011 Horsham · 16,005 Willow Grove · 14,131East GreenvilleGreen LanePalmPennsburgPerkiomenvilleRed HillColmarMontgomeryvilleSoudertonTelfordAbingtonAmblerBala CynwydHuntingdon ValleyBryn AthynCheltenhamDresherElkins ParkFlourtownFort WashingtonGladwyneGlensideHatboroJenkintownMerion Station

ZIP codes in Montgomery County

18041 East Greenville 18054 Green Lane 18070 Palm 18073 Pennsburg 18074 Perkiomenville 18076 Red Hill 18915 Colmar 18936 Montgomeryville 18964 Souderton 18969 Telford 19001 Abington 19002 Ambler 19004 Bala Cynwyd 19006 Huntingdon Valley 19009 Bryn Athyn 19012 Cheltenham 19025 Dresher 19027 Elkins Park 19031 Flourtown 19034 Fort Washington 19035 Gladwyne 19038 Glenside 19040 Hatboro 19044 Horsham 19046 Jenkintown 19066 Merion Station 19072 Narberth 19075 Oreland 19090 Willow Grove 19095 Wyncote 19096 Wynnewood 19401 Norristown 19403 Norristown 19405 Bridgeport 19406 King Of Prussia 19422 Blue Bell 19426 Collegeville 19428 Conshohocken 19435 Frederick 19436 Gwynedd 19437 Gwynedd Valley 19438 Harleysville 19440 Hatfield 19444 Lafayette Hill 19446 Lansdale 19453 Mont Clare 19454 North Wales 19456 Oaks 19462 Plymouth Meeting 19464 Pottstown 19468 Royersford 19472 Sassamansville 19473 Schwenksville 19474 Skippack 19477 Spring House 19490 Worcester 19492 Zieglerville 19525 Gilbertsville

Population: U.S. Census Bureau, ACS 5-year estimates, 2024.