7 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 77474 | Sealy | 14,819 |
| 77418 | Bellville | 10,384 |
| 77485 | Wallis | 3,454 |
| 78950 | New Ulm | 2,376 |
| 78944 | Industry | 676 |
| 78931 | Bleiblerville | 210 |
| 77473 | San Felipe | 24 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 7 ZCTAs in Austin County, Texas (US Census).