Home > NJ > Mercer County > Princeton Junction > Zip 08550

Zip Code 08550 — Princeton Junction, NJ

08550 is a ZIP Code associated with Princeton Junction, NJ, located within Mercer. The postal region supports an estimated population of 21,067 residents across Data Pending housing units, with a population density of 425.1 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (40.281250, -74.619260)

Data MetricLocal Statistic
Postal / Zip Code08550
Primary CityPrinceton Junction
State / ProvinceNJ
CountyMercer
Total Population21,067
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density425.1 people/sq mi
TimezoneAmerica/New_York

How 08550 Compares

MetricZIP 08550Mercer CountyNJ State Average
Population21,067395,6719,343,809
Median IncomeData PendingN/AN/A
Population Density425.1 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 08561Windsor3.1 mi325N/A
Zip 08536Plainsboro4.1 mi20,817N/A
Zip 08690Trenton4.5 mi18,841N/A
Zip 08520Hightstown4.9 mi29,504N/A
Zip 08619Trenton4.9 mi24,089N/A

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 →