ZIP 12740 falls in Ulster County, New York, where we hold 11,705 parcels measured as septic county-wide and 10,535 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 12740.
ZCTA 12740 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) |
|---|---|---|---|---|
| Ulster County, New York | 63% | — | 11,705 | 10,535 |
| Sullivan County, New York | 37% | — | 23,324 | 12,192 |
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 11,705 parcels measured as septic for Ulster County, New York as a whole, not broken out by ZIP.
ZIP 12740 spans 2 counties: Ulster County, New York, Sullivan County, New York.