16 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| The Woodlands | 1 | 124,541 | 114,532 | 1.67% | 2,878 | 43 | CDP |
| Conroe | 2 | 120,417 | 91,234 | 5.09% | 1,589 | 76 | City |
| Magnolia | 3 | 7,521 | 2,446 | 15.6% | 1,552 | 5 | City |
| Willis | 4 | 7,415 | 6,449 | 2.67% | 1,567 | 5 | City |
| Pinehurst | 5 | 3,980 | 5,030 | -1.07% | 503 | 8 | CDP |
| Shenandoah | 6 | 3,917 | 3,525 | 2.03% | 2,005 | 2 | City |
| Montgomery | 7 | 3,072 | 2,010 | 7.41% | 610 | 5 | City |
| Oak Ridge North | 8 | 2,989 | 3,058 | -0.47% | 2,067 | 1 | City |
| Panorama Village | 9 | 2,520 | 2,522 | -0.04% | 2,342 | 1 | City |
| Pinehurst | 10 | 2,225 | 2,228 | -0.04% | 1,303 | 2 | City |
| Splendora | 11 | 2,154 | 1,697 | 4.41% | 709 | 3 | City |
| Deerwood | 12 | 2,061 | 1,485 | 7.12% | 3,616 | 1 | CDP |
| Cut Shoot | 13 | 1,215 | 1,090 | 2.1% | 448 | 3 | City |
| Grangerland | 14 | 849 | 675 | 7.2% | 502 | 2 | CDP |
| Stagecoach | 15 | 608 | 583 | 0.83% | 528 | 1 | Town |
| Woodloch | 16 | 177 | 185 | -1.12% | 2,107 | 0 | Town |
The Woodlands is the largest city in Montgomery County, with a population of 124,541.
Woodloch is the smallest city in Montgomery County, with a population of 177.
There are 16 cities in Montgomery County, Texas.