6 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| New Braunfels | 1 | 122,675 | 91,683 | 5.32% | 2,724 | 45 | City |
| Canyon Lake | 2 | 34,728 | 26,338 | 2.65% | 243 | 143 | CDP |
| Bulverde | 3 | 7,559 | 5,753 | 5.02% | 478 | 16 | City |
| Garden Ridge | 4 | 4,421 | 4,205 | 0.98% | 619 | 7 | City |
| Lake Dunlap | 5 | 1,372 | 1,546 | -2.63% | 915 | 2 | CDP |
| Spring Branch | 6 | 265 | 210 | 4.33% | 129 | 2 | City |
New Braunfels is the largest city in Comal County, with a population of 122,675.
Spring Branch is the smallest city in Comal County, with a population of 265.
There are 6 cities in Comal County, Texas.