We have 1 parcels measured as septic in ZIP 77021 itself (Harris County, Texas), out of 11,263 parcels in our records for this ZIP, of which 11,262 are recorded as on sewer.
| County | Land in this ZIP | Documents held | On septic (county) | On sewer (county) |
|---|---|---|---|---|
| Harris County, Texas | 100% | — | 128,872 | 1,412,534 |
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 have measured 1 parcels as septic in ZIP 77021 itself, out of 11,263 parcels in our records for this ZIP.
ZIP 77021 falls in Harris County, Texas.