7 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 77474 | Sealy | 15,146 |
| 77418 | Bellville | 10,171 |
| 77485 | Wallis | 4,378 |
| 78950 | New Ulm | 2,300 |
| 78944 | Industry | 720 |
| 78931 | Bleiblerville | 185 |
| 77473 | San Felipe | 49 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 7 ZCTAs in Austin County, Texas (US Census).