6 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| New Braunfels | 1 | 123,834 | 91,643 | 5.48% | 2,750 | 45.03 | City |
| Canyon Lake | 2 | 34,728 | 26,338 | 2.65% | 243 | 142.71 | CDP |
| Bulverde | 3 | 7,781 | 5,753 | 5.5% | 492 | 15.81 | City |
| Garden Ridge | 4 | 4,461 | 4,206 | 1.16% | 625 | 7.14 | City |
| Lake Dunlap | 5 | 1,372 | 1,546 | -2.63% | 915 | 1.50 | CDP |
| Spring Branch | 6 | 266 | 210 | 4.31% | 130 | 2.05 | City |
New Braunfels is the largest city in Comal County, with a population of 123,834.
Spring Branch is the smallest city in Comal County.
There are 6 cities in Comal County, Texas.