26 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| San Antonio | 1 | 1,548,485 | 1,439,340 | 1.43% | 3,104 | 499 | City |
| Converse | 2 | 32,284 | 27,864 | 2.82% | 3,418 | 9 | City |
| Universal City | 3 | 20,395 | 19,753 | 0.63% | 3,617 | 6 | City |
| Live Oak | 4 | 16,317 | 15,820 | 0.61% | 3,430 | 5 | City |
| Fair Oaks Ranch | 5 | 12,196 | 9,935 | 3.85% | 995 | 12 | City |
| Selma | 6 | 12,018 | 11,428 | 0.99% | 2,399 | 5 | City |
| Leon Valley | 7 | 11,392 | 11,549 | -0.28% | 3,285 | 3 | City |
| Helotes | 8 | 10,499 | 9,118 | 2.7% | 1,515 | 7 | City |
| Kirby | 9 | 8,093 | 8,148 | -0.14% | 4,047 | 2 | City |
| Alamo Heights | 10 | 7,601 | 7,378 | 0.58% | 4,129 | 2 | City |
| Sandy Oaks | 11 | 5,847 | 5,102 | 2.61% | 2,452 | 2 | City |
| Windcrest | 12 | 5,763 | 5,858 | -0.33% | 2,680 | 2 | City |
| Terrell Hills | 13 | 5,165 | 5,047 | 0.45% | 3,204 | 2 | City |
| Castle Hills | 14 | 3,919 | 3,977 | -0.31% | 1,587 | 2 | City |
| Shavano Park | 15 | 3,874 | 3,536 | 1.76% | 1,178 | 3 | City |
| Hollywood Park | 16 | 3,119 | 3,164 | -0.29% | 2,157 | 1 | Town |
| Elmendorf | 17 | 2,885 | 1,873 | 7.53% | 470 | 6 | City |
| Balcones Heights | 18 | 2,697 | 2,744 | -0.37% | 4,118 | 1 | City |
| St. Hedwig | 19 | 2,413 | 2,231 | 1.51% | 81 | 30 | Town |
| Olmos Park | 20 | 2,151 | 2,168 | -0.19% | 3,503 | 1 | City |
| Somerset | 21 | 1,864 | 1,757 | 1.14% | 933 | 2 | City |
| LaCoste | 22 | 1,256 | 1,086 | 2.78% | 1,990 | 1 | City |
| Von Ormy | 23 | 1,224 | 1,179 | 0.74% | 647 | 2 | City |
| China Grove | 24 | 1,137 | 1,139 | -0.09% | 264 | 4 | Town |
| Hill Country Village | 25 | 951 | 941 | 0.21% | 434 | 2 | City |
| Santa Clara | 26 | 750 | 763 | -0.4% | 328 | 2 | City |
San Antonio is the largest city in Bexar County, with a population of 1,548,485.
Santa Clara is the smallest city in Bexar County, with a population of 750.
There are 26 cities in Bexar County, Texas.