9 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Marble Falls | 1 | 9,997 | 7,077 | 6.2% | 639 | 16 | City |
| Burnet | 2 | 6,967 | 6,476 | 1.43% | 664 | 10 | City |
| Granite Shoals | 3 | 5,483 | 5,152 | 1.22% | 776 | 7 | City |
| Santa Rita Ranch | 4 | 4,569 | 2,232 | 7.15% | 1,156 | 4 | CDP |
| Bertram | 5 | 2,113 | 1,646 | 4.6% | 1,241 | 2 | City |
| Meadowlakes | 6 | 1,831 | 1,888 | -0.65% | 2,441 | 1 | City |
| Cottonwood Shores | 7 | 1,727 | 1,429 | 3.54% | 1,613 | 1 | City |
| Highland Haven | 8 | 407 | 419 | -0.73% | 923 | 0 | City |
| Briggs | 9 | 69 | 97 | 7.81% | 125 | 1 | CDP |
Marble Falls is the largest city in Burnet County, with a population of 9,997.
Briggs is the smallest city in Burnet County, with a population of 69.
There are 9 cities in Burnet County, Texas.