ZIP Code 78115 is located in Geronimo Texas. 78115 is entirely within Guadalupe County. Regionally, it is located in Metro San Antonio.
| ZIP Code Name | Geronimo |
| Primary County | Guadalupe County |
| ZIP Code Type | PO Box |
| Current Time | CDT |
| Coordinates | 29.56879807,-97.97010803 |
| Adjacent ZIP Codes | |
| Region | Metro San Antonio |
| Metropolitan/Micropolitan Stat Area | San Antonio-New Braunfels, TX |
| Time Zone | Central Daylight Time |
| IANA Timezone | America/Chicago |