Zip Code 12542 — Marlboro, NY

ZIP Code 12542 is associated with Marlboro, NY, in Ulster County. The listed population estimate is 5,612; estimated density is 150.6 people per square mile. Among records with population estimates, it ranks #8 of 54 in Ulster County and #690 of 1,778 in NY.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (41.607720, -73.996660)

Data MetricLocal Statistic
Postal / Zip Code12542
Primary CityMarlboro
State / ProvinceNY
CountyUlster
Total Population5,612
Population Density150.6 people/sq mi
TimezoneAmerica/New_York

How 12542 Compares

MetricZIP 12542Ulster County recordsNY records
Population estimate5,612194,344 (sum)19,771,902 (sum)
Population Density150.6 /sq mi----
County population rank#8 of 54----
State population rank#690 of 1,778----

Regional sums combine the population estimates in the listed ZIP records; they are not official county or state population totals.

Explore More ZIP Codes

Nearby ZIP Codes in NY

ZIP CodeCityDistancePopulation estimate
ZIP 12547Milton3.3 mi3,144
ZIP 12512Chelsea4.0 mi194
ZIP 12550Newburgh5.7 mi55,152
ZIP 12590Wappingers Falls5.7 mi35,712
ZIP 12515Clintondale6.1 mi1,492

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →