70 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 78245 | San Antonio | 92,770 |
| 78254 | San Antonio | 76,945 |
| 78253 | San Antonio | 63,735 |
| 78251 | San Antonio | 62,064 |
| 78249 | San Antonio | 60,769 |
| 78250 | San Antonio | 59,434 |
| 78240 | San Antonio | 57,532 |
| 78228 | San Antonio | 57,172 |
| 78223 | San Antonio | 55,063 |
| 78109 | Converse | 52,507 |
| 78207 | San Antonio | 51,381 |
| 78247 | San Antonio | 49,888 |
| 78258 | San Antonio | 48,344 |
| 78233 | San Antonio | 47,172 |
| 78227 | San Antonio | 45,553 |
| 78201 | San Antonio | 45,355 |
| 78209 | San Antonio | 43,184 |
| 78230 | San Antonio | 42,387 |
| 78216 | San Antonio | 42,379 |
| 78213 | San Antonio | 42,321 |
| 78154 | Schertz | 40,535 |
| 78221 | San Antonio | 40,272 |
| 78237 | San Antonio | 38,492 |
| 78218 | San Antonio | 37,122 |
| 78242 | San Antonio | 36,404 |
| 78244 | San Antonio | 36,234 |
| 78232 | San Antonio | 36,169 |
| 78260 | San Antonio | 35,972 |
| 78229 | San Antonio | 34,082 |
| 78210 | San Antonio | 33,413 |
| 78217 | San Antonio | 32,152 |
| 78211 | San Antonio | 31,433 |
| 78239 | San Antonio | 30,482 |
| 78023 | Helotes | 28,195 |
| 78212 | San Antonio | 26,911 |
| 78259 | San Antonio | 26,568 |
| 78238 | San Antonio | 25,900 |
| 78261 | San Antonio | 25,729 |
| 78222 | San Antonio | 24,866 |
| 78214 | San Antonio | 22,914 |
| 78148 | Universal City | 22,236 |
| 78224 | San Antonio | 20,965 |
| 78255 | San Antonio | 18,149 |
| 78220 | San Antonio | 16,919 |
| 78219 | San Antonio | 16,442 |
| 78252 | San Antonio | 15,624 |
| 78225 | San Antonio | 13,802 |
| 78248 | San Antonio | 13,366 |
| 78264 | San Antonio | 12,545 |
| 78256 | San Antonio | 12,195 |
| 78204 | San Antonio | 11,969 |
| 78112 | Elmendorf | 10,234 |
| 78231 | San Antonio | 9,972 |
| 78257 | San Antonio | 9,783 |
| 78202 | San Antonio | 9,695 |
| 78073 | Von Ormy | 9,219 |
| 78101 | Adkins | 8,863 |
| 78236 | Jbsa Lackland | 8,154 |
| 78002 | Atascosa | 8,047 |
| 78226 | San Antonio | 7,357 |
| 78263 | San Antonio | 5,642 |
| 78234 | Jbsa Ft Sam Houston | 5,534 |
| 78203 | San Antonio | 5,174 |
| 78208 | San Antonio | 4,186 |
| 78215 | San Antonio | 3,231 |
| 78152 | Saint Hedwig | 2,969 |
| 78235 | San Antonio | 2,548 |
| 78205 | San Antonio | 1,741 |
| 78243 | San Antonio | 299 |
| 78150 | Jbsa Randolph | 0 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 70 ZCTAs in Bexar County, Texas (US Census).