Founded in 1784, Montgomery County is one of 67 counties in the state of Pennsylvania. Historically, Montgomery County was formed from parts of Philadelphia County. The city of Norristown is the county seat. With FIPS code of 91, Montgomery County has a population of 860,578 and area of 487 square miles (1,261 km2).
List of all cities in Montgomery County, PA alphabetically
| City/Town | Postal Code | Area Code |
| Abington, PA | 19001 | 215/267 |
| Ambler, PA | 19002 | 215/267 |
| Arcola, PA | 19420 | 610/484 |
| Ardmore, PA | 19003 | 610/484 |
| Ardsley, PA | 19038 | 215/267 |
| Audubon, PA | 19403 | 610/484 |
| 19407 | 610/484 | |
| Baederwood, PA | 19046 | 215/267 |
| Bala, PA | 19004 | 610/484 |
| Bala Cynwyd, PA | 19004 | 610/484 |
| Bell Telephone, PA | 19429 | 610/484 |
| Belmont Hills, PA | 19004 | 610/484 |
| Bethayres, PA | 19006 | 215/267 |
| Black Horse, PA | 19401 | 610/484 |
| Blue Bell, PA | 19422 | 215/267 |
| 19424 | 215/267 | |
| Bridgeport, PA | 19405 | 610/484 |
| Broad Axe, PA | 19002 | 215/267 |
| Bryn Athyn, PA | 19009 | 215/267 |
| Carroll Park, PA | 19096 | 610/484 |
| Cedarbrook, PA | 19095 | 215/267 |
| Cedars, PA | 19423 | 610/484 |
| Center Square, PA | 19422 | 215/267 |
| Cheltenham, PA | 19012 | 215/267 |
| Collegeville, PA | 19426 | 610/484 |
| 19473 | 610/484 | |
| Colmar, PA | 18915 | 215/267 |
| Conshohocken, PA | 19428 | 610/484 |
| 19429 | 610/484 | |
| Creamery, PA | 19430 | 610/484 |
| Cynwyd, PA | 19004 | 610/484 |
| Douglass, PA | 19525 | 610/484 |
| Dresher, PA | 19025 | 215/267 |
| Eagleville, PA | 19403 | 610/484 |
| 19408 | 610/484 | |
| 19415 | 610/484 | |
| Earlington, PA | 18918 | 215/267 |
| East Greenville, PA | 18041 | 215/267 |
| East Norriton, PA | 19401 | 610/484 |
| 19403 | 610/484 | |
| Elkins Park, PA | 19027 | 215/267 |
| Erdenheim, PA | 19038 | 215/267 |
| Fagleysville, PA | 19525 | 610/484 |
| Fairview Village, PA | 19409 | 610/484 |
| Flourtown, PA | 19031 | 215/267 |
| Fort Wash, PA | 19034 | 215/267 |
| Fort Washington, PA | 19034 | 215/267 |
| Fox Chase Manor, PA | 19046 | 215/267 |
| Foxcroft, PA | 19046 | 215/267 |
| Foxcroft Square, PA | 19046 | 215/267 |
| Franconia, PA | 18924 | 215/267 |
| Frederick, PA | 19435 | 610/484 |
| Gilbertsville, PA | 19525 | 610/484 |
| Gladwyne, PA | 19035 | 610/484 |
| Glenside, PA | 19038 | 215/267 |
| Graterford, PA | 19426 | 610/484 |
| Green Lane, PA | 18054 | 215/267 |
| Gulph Mills, PA | 19428 | 610/484 |
| Gwynedd, PA | 19436 | 215/267 |
| 19454 | 215/267 | |
| Gwynedd Valley, PA | 19437 | 215/267 |
| Harleysville, PA | 19438 | 215/267 |
| Harleysville, PA | 19441 | 215/267 |
| Harleysville Insurance Co, PA | 19441 | 215/267 |
| Harriet Carter Gifts, PA | 19455 | 215/267 |
| Hatboro, PA | 19040 | 215/267 |
| Hatfield, PA | 19440 | 215/267 |
| Haverford, PA | 19041 | 610/484 |
| Hollywood, PA | 19046 | 215/267 |
| Horsham, PA | 19044 | 215/267 |
| Huntingdon Valley, PA | 19006 | 215/267 |
| Jarrettown, PA | 19025 | 215/267 |
| Jeffersonville, PA | 19401 | 610/484 |
| 19403 | 610/484 | |
| Jenkintown, PA | 19046 | 215/267 |
| King of Prussia, PA | 19406 | 610/484 |
| Kng of Prussa, PA | 19406 | 610/484 |
| Kulpsville, PA | 19443 | 215/267 |
| Lafayette Hill, PA | 19444 | 610/484 |
| Lamott, PA | 19027 | 215/267 |
| Lansdale, PA | 19446 | 215/267 |
| Laverock, PA | 19038 | 215/267 |
| Layfield, PA | 19525 | 610/484 |
| Lederach, PA | 19450 | 215/267 |
| Limerick, PA | 19468 | 610/484 |
| Linfield, PA | 19468 | 610/484 |
| Lower Gwynedd, PA | 19002 | 215/267 |
| Mainland, PA | 19451 | 215/267 |
| Maple Glen, PA | 19002 | 215/267 |
| Meadowbrook, PA | 19046 | 215/267 |
| Melrose, PA | 19027 | 215/267 |
| Melrose Park, PA | 19027 | 215/267 |
| Merion, PA | 19066 | 610/484 |
| Merion Park, PA | 19066 | 610/484 |
| Merion Station, PA | 19066 | 610/484 |
| Miquon, PA | 19444 | 610/484 |
| Mont Clare, PA | 19453 | 610/484 |
| Montgomery Township, PA | 19454 | 215/267 |
| Montgomeryville, PA | 18936 | 215/267 |
| Narberth, PA | 19072 | 610/484 |
| New Hanover Township, PA | 19525 | 610/484 |
| Norristown, PA | 19401 | 610/484 |
| 19403 | 610/484 | |
| 19404 | 610/484 | |
| 19405 | 610/484 | |
| 19406 | 610/484 | |
| 19407 | 610/484 | |
| 19408 | 610/484 | |
| 19409 | 610/484 | |
| North Hills, PA | 19038 | 215/267 |
| North Wales, PA | 19436 | 215/267 |
| 19454 | 215/267 | |
| 19455 | 215/267 | |
| 19477 | 215/267 | |
| Oaks, PA | 19456 | 610/484 |
| Ogontz Campus, PA | 19001 | 215/267 |
| Oreland, PA | 19075 | 215/267 |
| Palm, PA | 18070 | 215/267 |
| Penllyn, PA | 19422 | 215/267 |
| Penn Valley, PA | 19072 | 610/484 |
| Penn Wynne, PA | 19096 | 610/484 |
| Pennsburg, PA | 18073 | 215/267 |
| Perkiomenville, PA | 18074 | 215/267 |
| Phoenixville, PA | 19453 | 610/484 |
| Plymouth Meeting, PA | 19462 | 610/484 |
| Plymouth Valley, PA | 19462 | 610/484 |
| Pottstown, PA | 19464 | 610/484 |
| Prospectville, PA | 19002 | 215/267 |
| Rahns, PA | 19426 | 610/484 |
| Red Hill, PA | 18073 | 215/267 |
| 18076 | 215/267 | |
| Rockledge, PA | 19046 | 215/267 |
| Roslyn, PA | 19001 | 215/267 |
| Royersford, PA | 19468 | 610/484 |
| Rydal, PA | 19046 | 215/267 |
| Salford, PA | 18957 | 610/484 |
| Salfordville, PA | 18958 | 610/484 |
| Sanatoga, PA | 19464 | 610/484 |
| Sassamansville, PA | 19472 | 610/484 |
| Schwenksville, PA | 19473 | 610/484 |
| Shared Return Zip, PA | 19415 | 610/484 |
| Skippack, PA | 19474 | 610/484 |
| Souderton, PA | 18964 | 215/267 |
| Spring House, PA | 19477 | 215/267 |
| Spring Mount, PA | 19478 | 610/484 |
| Springhouse, PA | 19477 | 215/267 |
| Stowe, PA | 19464 | 610/484 |
| Sumneytown, PA | 18084 | 215/267 |
| Telford, PA | 18969 | 215/267 |
| Trappe, PA | 19426 | 610/484 |
| Trooper, PA | 19403 | 610/484 |
| Tylersport, PA | 18971 | 215/267 |
| Unisys, PA | 19424 | 215/267 |
| Upper Dublin, PA | 19034 | 215/267 |
| Upper Gwynedd, PA | 19446 | 215/267 |
| Valley Forge, PA | 19484 | 610/484 |
| Valley Forge, PA | 19485 | 610/484 |
| West Conshohocken, PA | 19428 | 610/484 |
| West Point, PA | 19486 | 215/267 |
| Willow Grove, PA | 19090 | 215/267 |
| Worcester, PA | 19490 | 610/484 |
| Woxall, PA | 18979 | 215/267 |
| Wyncote, PA | 19095 | 215/267 |
| Wyndmoor, PA | 19038 | 215/267 |
| Wynnewood, PA | 19096 | 610/484 |
| Zieglersville, PA | 19492 | 610/484 |
| Zieglerville, PA | 19492 | 610/484 |