70 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 78245 | San Antonio | 91,388 |
| 78254 | San Antonio | 78,865 |
| 78253 | San Antonio | 67,578 |
| 78249 | San Antonio | 61,772 |
| 78251 | San Antonio | 61,683 |
| 78250 | San Antonio | 57,849 |
| 78223 | San Antonio | 57,298 |
| 78240 | San Antonio | 57,014 |
| 78109 | Converse | 56,372 |
| 78228 | San Antonio | 55,474 |
| 78207 | San Antonio | 54,128 |
| 78247 | San Antonio | 51,979 |
| 78258 | San Antonio | 51,672 |
| 78233 | San Antonio | 47,659 |
| 78227 | San Antonio | 44,091 |
| 78201 | San Antonio | 43,426 |
| 78209 | San Antonio | 43,363 |
| 78230 | San Antonio | 42,070 |
| 78216 | San Antonio | 42,044 |
| 78213 | San Antonio | 41,603 |
| 78221 | San Antonio | 41,580 |
| 78154 | Schertz | 40,898 |
| 78218 | San Antonio | 38,291 |
| 78244 | San Antonio | 37,861 |
| 78260 | San Antonio | 37,389 |
| 78237 | San Antonio | 36,930 |
| 78232 | San Antonio | 36,277 |
| 78242 | San Antonio | 35,976 |
| 78229 | San Antonio | 35,195 |
| 78210 | San Antonio | 34,740 |
| 78217 | San Antonio | 33,959 |
| 78211 | San Antonio | 30,589 |
| 78239 | San Antonio | 29,855 |
| 78023 | Helotes | 28,585 |
| 78261 | San Antonio | 27,060 |
| 78259 | San Antonio | 26,931 |
| 78212 | San Antonio | 26,670 |
| 78238 | San Antonio | 26,250 |
| 78222 | San Antonio | 25,008 |
| 78148 | Universal City | 22,630 |
| 78214 | San Antonio | 21,884 |
| 78224 | San Antonio | 20,671 |
| 78220 | San Antonio | 18,497 |
| 78252 | San Antonio | 18,256 |
| 78255 | San Antonio | 18,107 |
| 78219 | San Antonio | 16,946 |
| 78248 | San Antonio | 14,127 |
| 78225 | San Antonio | 13,188 |
| 78256 | San Antonio | 12,014 |
| 78204 | San Antonio | 11,944 |
| 78264 | San Antonio | 11,702 |
| 78257 | San Antonio | 10,390 |
| 78231 | San Antonio | 9,966 |
| 78112 | Elmendorf | 9,959 |
| 78202 | San Antonio | 9,952 |
| 78073 | Von Ormy | 9,510 |
| 78101 | Adkins | 8,272 |
| 78236 | Jbsa Lackland | 7,629 |
| 78002 | Atascosa | 7,482 |
| 78226 | San Antonio | 6,907 |
| 78234 | Jbsa Ft Sam Houston | 6,281 |
| 78203 | San Antonio | 4,845 |
| 78263 | San Antonio | 4,514 |
| 78152 | Saint Hedwig | 3,958 |
| 78208 | San Antonio | 3,877 |
| 78215 | San Antonio | 3,258 |
| 78235 | San Antonio | 2,440 |
| 78205 | San Antonio | 1,653 |
| 78243 | San Antonio | 251 |
| 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).