ZIP 78240 falls in Bexar County, Texas, where we hold 20,309 parcels measured as septic county-wide and 684,891 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 78240.
| County | Land in this ZIP | Documents held | On septic (county) | On sewer (county) |
|---|---|---|---|---|
| Bexar County, Texas | 100% | — | 20,309 | 684,891 |
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 20,309 parcels measured as septic for Bexar County, Texas as a whole, not broken out by ZIP.
ZIP 78240 falls in Bexar County, Texas.