| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Bastrop | 1 | 14,125 | 9,787 | 5.54% | 1,435 | 10 | City |
| Elgin | 2 | 14,011 | 9,803 | 5.13% | 1,931 | 7 | City |
| Smithville | 3 | 4,445 | 4,064 | 1.79% | 1,095 | 4 | City |
| Webberville | 4 | 513 | 404 | 3.64% | 245 | 2 | Village |
Bastrop is the largest city in Bastrop County, with a population of 14,125.
Webberville is the smallest city in Bastrop County, with a population of 513.
There are 4 cities in Bastrop County, Texas.