ZIP 78731 falls in Travis County, Texas, where we hold 34,543 parcels measured as septic county-wide and 337,990 on sewer. We do not have a per-ZIP parcel count for this county, so this is the county total, not a count specific to ZIP 78731.
| County | Land in this ZIP | Documents held | On septic (county) | On sewer (county) |
|---|---|---|---|---|
| Travis County, Texas | 100% | 164,420 | 34,543 | 337,990 |
2 businesses on record with an address in this ZIP: pumping, installation, design, inspection and repair. Not an endorsement, and we take no fee.
| Company | City | Phone | Rating |
|---|---|---|---|
| Superior Septic/Clean Can | Austin | (512) 244-1255 | 2.0 (4) |
| AusTex Development | Austin | (512) 698-7676 | 1.0 (1) |
Land-area overlap is from the 2020 Census Bureau ZCTA5-to-county relationship file, not an estimate of ours. Parcel and document counts are rows we hold, not a survey of every property in the ZIP. Last verified 2026-09-01.
We hold 34,543 parcels measured as septic for Travis County, Texas as a whole, not broken out by ZIP.
ZIP 78731 falls in Travis County, Texas.