12 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Conroe | 1 | 120,417 | 91,234 | 5.09% | 1,589 | 76 | City |
| Magnolia | 2 | 7,521 | 2,446 | 15.6% | 1,468 | 5 | City |
| Willis | 3 | 7,415 | 6,449 | 2.67% | 1,567 | 5 | City |
| Shenandoah | 4 | 3,917 | 3,525 | 2.03% | 2,005 | 2 | City |
| Montgomery | 5 | 3,072 | 2,010 | 7.41% | 533 | 6 | City |
| Oak Ridge North | 6 | 2,989 | 3,058 | -0.47% | 2,067 | 1 | City |
| Panorama Village | 7 | 2,520 | 2,522 | -0.04% | 2,342 | 1 | City |
| Pinehurst | 8 | 2,225 | 2,228 | -0.04% | 1,303 | 2 | City |
| Splendora | 9 | 2,154 | 1,697 | 4.41% | 709 | 3 | City |
| Cut and Shoot | 10 | 1,215 | 1,090 | 2.1% | 449 | 3 | City |
| Stagecoach | 11 | 608 | 583 | 0.83% | 528 | 1 | Town |
| Woodloch | 12 | 177 | 185 | -1.12% | 2,107 | 0 | Town |
Conroe is the largest city in Montgomery County, with a population of 120,417.
Woodloch is the smallest city in Montgomery County, with a population of 177.
There are 12 cities in Montgomery County, Texas.