2 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| San Augustine | 1 | 1,833 | 1,917 | -0.92% | 389 | 4.72 | City |
| Broaddus | 2 | 180 | 184 | -0.55% | 483 | 0.37 | Town |
San Augustine is the largest city in San Augustine County, with a population of 1,833.
Broaddus is the smallest city in San Augustine County.
There are 2 cities in San Augustine County, Texas.