ZIP 88401 falls in Quay County, New Mexico, where we hold 17 parcels measured as septic county-wide and 279 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 88401.
ZCTA 88401 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) |
|---|---|---|---|---|
| Quay County, New Mexico | 90% | — | 17 | 279 |
| San Miguel County, New Mexico | 10% | — | 5,658 | 5,663 |
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 17 parcels measured as septic for Quay County, New Mexico as a whole, not broken out by ZIP.
ZIP 88401 spans 2 counties: Quay County, New Mexico, San Miguel County, New Mexico.