ZIP code · Marlboro · New York · United States
ZIP code 12542 — Marlboro
ZIP code 12542 serves Marlboro, New York.
- Postal code
- 12542Single source Value from one source, not cross-checked.
- City
- Marlboro
- County
- Ulster
- State
- New York
- Country
- United States
- Coordinates
- 41.6056, -73.9880 — precision precise (locality)
View on OpenStreetMap - Population
- 5,859 (ZCTA, ACS 5-year)
- Median household income
- $123,517
- Median age
- 43.6
- Time zone
- America/New_York (UTC−5 / UTC−4 DST)
- Area code
- 845Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.
About this page
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames · U.S. Census Bureau (ACS). Data generated on 2026-08-21. Methodology · Report an error on this page