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Zip Code 08618 — Trenton, NJ

08618 is a ZIP Code associated with Trenton, NJ, located within Mercer. 08618 ranks #2 out of 22 ZIP codes in Mercer County by population (and #67 out of 598 in NJ). The area supports an estimated population of 35,634 residents across Data Pending housing units, with a population density of 2,324.0 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (40.248780, -74.787340)

Data MetricLocal Statistic
Postal / Zip Code08618
Primary CityTrenton
State / ProvinceNJ
CountyMercer
Total Population35,634
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density2,324.0 people/sq mi
TimezoneAmerica/New_York

How 08618 Compares

MetricZIP 08618Mercer CountyNJ State Average
Population35,634395,671 (Total)9,343,809 (Total)
Average ZIP IncomeData PendingN/AN/A
Population Density2,324.0 /sq mi----
County Pop Rank#2 of 22----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 08638Trenton1.4 mi22,816N/A
Zip 08628Trenton2.2 mi9,831N/A
Zip 08608Trenton2.3 mi1,250N/A
Zip 08609Trenton2.9 mi15,938N/A
Zip 08629Trenton3.5 mi13,013N/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 →