New Jersey

Postal abbreviation NJ. 723 ZIP codes across 21 counties.

Population9,343,809
Postal abbreviationNJ
ZIP codes723 ZIP codes →
Area codes201551609640732848856862908973
Time zoneEastern
Counties21

Largest cities by population

Newark · 310,178Jersey City · 294,078Paterson · 158,735Elizabeth · 137,302Toms River · 94,956Trenton · 90,338Clifton · 89,379Bayonne · 71,553Camden · 71,496East Orange · 70,090Passaic · 70,002Lakewood · 69,585Union City · 66,463Vineland · 61,006Hoboken · 58,668New Brunswick · 56,345Perth Amboy · 55,855Plainfield · 55,236West New York · 52,004Hackensack · 46,057Sayreville · 45,838Sicklerville · 44,998Linden · 44,192Kearny · 40,614Fort Lee · 40,067Atlantic City · 38,632Fair Lawn · 35,610Garfield · 32,783Long Branch · 32,530Westfield · 31,111

Largest counties by population

Bergen County · 962,316Middlesex County · 871,290Essex County · 863,002Hudson County · 718,323Ocean County · 654,362Monmouth County · 645,353Union County · 579,290Camden County · 527,257Passaic County · 521,012Morris County · 514,528

Counties in New Jersey

Atlantic CountyBergen CountyBurlington CountyCamden CountyCape May CountyCumberland CountyEssex CountyGloucester CountyHudson CountyHunterdon CountyMercer CountyMiddlesex CountyMonmouth CountyMorris CountyOcean CountyPassaic CountySalem CountySomerset CountySussex CountyUnion CountyWarren County

Population: U.S. Census Bureau, ACS 5-year estimates, 2024.