6 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Lakeway | 1 | 18,959 | 19,250 | -0.25% | 1,473 | 13 | City |
| Briarcliff | 2 | 2,542 | 2,077 | 3.17% | 1,616 | 2 | Village |
| Blanco | 3 | 2,269 | 1,692 | 4.42% | 651 | 3 | City |
| Johnson City | 4 | 2,252 | 1,772 | 3.68% | 1,154 | 2 | City |
| Woodcreek | 5 | 1,930 | 1,798 | 1.15% | 1,777 | 1 | City |
| Round Mountain | 6 | 125 | 104 | 3.31% | 54 | 2 | Town |
Lakeway is the largest city in Blanco County, with a population of 18,959.
Round Mountain is the smallest city in Blanco County, with a population of 125.
There are 6 cities in Blanco County, Texas.