| Zip Code | City | Population ↓ |
|---|---|---|
| 19446 | Lansdale | 60,659 |
| 19464 | Pottstown | 47,913 |
| 19403 | Norristown | 44,111 |
| 19401 | Norristown | 42,908 |
| 19426 | Collegeville | 42,656 |
| 19038 | Glenside | 32,672 |
| 19002 | Ambler | 31,608 |
| 19406 | King Of Prussia | 28,826 |
| 19468 | Royersford | 28,083 |
| 19454 | North Wales | 28,036 |
| 19438 | Harleysville | 24,962 |
| 19006 | Huntingdon Valley | 23,244 |
| 19040 | Hatboro | 22,137 |
| 19428 | Conshohocken | 20,321 |
| 19422 | Blue Bell | 20,050 |
| 19440 | Hatfield | 19,897 |
| 19027 | Elkins Park | 19,863 |
| 19090 | Willow Grove | 19,814 |
| 19046 | Jenkintown | 18,994 |
| 19001 | Abington | 17,830 |
| 19473 | Schwenksville | 17,522 |
| 19525 | Gilbertsville | 17,090 |
| 19044 | Horsham | 17,027 |
| 19462 | Plymouth Meeting | 15,868 |
| 18969 | Telford | 15,533 |
| 19096 | Wynnewood | 15,384 |
| 18964 | Souderton | 14,129 |
| 18073 | Pennsburg | 11,271 |
| 19444 | Lafayette Hill | 11,194 |
| 19072 | Narberth | 10,557 |
| 19004 | Bala Cynwyd | 9,971 |
| 19075 | Oreland | 7,868 |
| 19095 | Wyncote | 7,437 |
| 19034 | Fort Washington | 7,138 |
| 19025 | Dresher | 7,044 |
| 19012 | Cheltenham | 6,664 |
| 18041 | East Greenville | 5,619 |
| 19066 | Merion Station | 5,594 |
| 18074 | Perkiomenville | 5,423 |
| 19031 | Flourtown | 5,159 |
| 19405 | Bridgeport | 5,110 |
| 18054 | Green Lane | 4,960 |
| 19035 | Gladwyne | 4,149 |
| 18076 | Red Hill | 3,152 |
| 19453 | Mont Clare | 1,543 |
| 18915 | Colmar | 1,458 |
| 19009 | Bryn Athyn | 1,091 |
| 19437 | Gwynedd Valley | 968 |
| 19492 | Zieglerville | 674 |
| 19436 | Gwynedd | 486 |
| 19474 | Skippack | 386 |
| 18070 | Palm | 340 |
| 19490 | Worcester | 274 |
| 19456 | Oaks | 270 |
| 18936 | Montgomeryville | 265 |
| 19435 | Frederick | 120 |
| 19472 | Sassamansville | 60 |
| 19477 | Spring House | 44 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 58 ZCTAs in Montgomery County, Pennsylvania (US Census).