ZIP 75098 falls in Collin County, Texas, where we hold 1,144 septic-related documents. We have not classified septic-versus-sewer status for this county, and we do not have a per-ZIP parcel count -- see the county page for what we hold and where the records are kept.
ZCTA 75098 is not entirely inside one county. Land-area share is from the 2020 Census ZCTA-to-county relationship file.
| County | Land in this ZIP | Documents held | On septic (county) | On sewer (county) |
|---|---|---|---|---|
| Collin County, Texas | 87% | 1,144 | — | — |
| Dallas County, Texas | 10% | 16 | 4,105 | 691,884 |
| Rockwall County, Texas | 3% | 8 | — | — |
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 not measured septic-versus-sewer status for this county yet.
ZIP 75098 spans 3 counties: Collin County, Texas, Dallas County, Texas, Rockwall County, Texas.