| Zip Code | City | Population ↓ |
|---|---|---|
| 78624 | Fredericksburg | 23,538 |
| 78671 | Stonewall | 755 |
| 78618 | Doss | 310 |
| 78675 | Willow City | 96 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 4 ZCTAs in Gillespie County, Texas (US Census).