Home > NJ > Mercer County > Trenton > Zip 08638

Zip Code 08638 — Trenton, NJ

08638 is a ZIP Code associated with Trenton, NJ, located within Mercer. The postal region supports an estimated population of 22,816 residents across Data Pending housing units, with a population density of 1,623.2 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (40.255310, -74.762220)

Data MetricLocal Statistic
Postal / Zip Code08638
Primary CityTrenton
State / ProvinceNJ
CountyMercer
Total Population22,816
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density1,623.2 people/sq mi
TimezoneAmerica/New_York

How 08638 Compares

MetricZIP 08638Mercer CountyNJ State Average
Population22,816395,6719,343,809
Median IncomeData PendingN/AN/A
Population Density1,623.2 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 08618Trenton1.4 mi35,634N/A
Zip 08609Trenton2.3 mi15,938N/A
Zip 08608Trenton2.5 mi1,250N/A
Zip 08629Trenton2.9 mi13,013N/A
Zip 08648Lawrence Township2.9 mi31,323N/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 →