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Zip Code 08691 — Robbinsville, NJ

08691 is a ZIP Code associated with Robbinsville, NJ, located within Mercer. The postal region supports an estimated population of 16,607 residents across Data Pending housing units, with a population density of 264.6 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (40.209530, -74.599190)

Data MetricLocal Statistic
Postal / Zip Code08691
Primary CityRobbinsville
State / ProvinceNJ
CountyMercer
Total Population16,607
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density264.6 people/sq mi
TimezoneAmerica/New_York

How 08691 Compares

MetricZIP 08691Mercer CountyNJ State Average
Population16,607395,6719,343,809
Median IncomeData PendingN/AN/A
Population Density264.6 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 08561Windsor2.7 mi325N/A
Zip 08690Trenton3.4 mi18,841N/A
Zip 08620Trenton3.9 mi11,621N/A
Zip 08501Allentown4.2 mi6,364N/A
Zip 08520Hightstown4.7 mi29,504N/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 →