ZIP 10588 falls in Westchester County, New York, where we hold 34,110 parcels measured as septic county-wide and 167,300 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 10588.
ZCTA 10588 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) |
|---|---|---|---|---|
| Westchester County, New York | 97% | 11 | 34,110 | 167,300 |
| Putnam County, New York | 3% | 1,835 | 25,810 | 5,109 |
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 34,110 parcels measured as septic for Westchester County, New York as a whole, not broken out by ZIP.
ZIP 10588 spans 2 counties: Westchester County, New York, Putnam County, New York.