Zip Code 08861 — Perth Amboy, NJ

ZIP Code 08861 is associated with Perth Amboy, NJ, in Middlesex County. The listed population estimate is 59,351; estimated density is 4,494.1 people per square mile. Among records with population estimates, it ranks #2 of 36 in Middlesex County and #11 of 595 in NJ.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (40.520870, -74.273970)

Data MetricLocal Statistic
Postal / Zip Code08861
Primary CityPerth Amboy
State / ProvinceNJ
CountyMiddlesex
Total Population59,351
Population Density4,494.1 people/sq mi
TimezoneAmerica/New_York

How 08861 Compares

MetricZIP 08861Middlesex County recordsNJ records
Population estimate59,351881,625 (sum)9,343,809 (sum)
Population Density4,494.1 /sq mi----
County population rank#2 of 36----
State population rank#11 of 595----

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 NJ

ZIP CodeCityDistancePopulation estimate
ZIP 08832Keasbey2.2 mi2,252
ZIP 08863Fords2.3 mi12,771
ZIP 07095Woodbridge2.4 mi20,756
ZIP 07077Sewaren2.5 mi3,248
ZIP 07064Port Reading3.6 mi3,481

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 →