Where Most People Live in New Jersey: The Northern Urban Corridor

The vast majority of New Jersey's ~9.3 million residents live in the northern and central counties that form part of the New York City and Philadelphia metropolitan areas.

Population Concentration (2020 Census)

• 70.7% in the 12 northernmost counties (Bergen, Essex, Hudson, Hunterdon, Mercer, Middlesex, Monmouth, Morris, Passaic, Somerset, Sussex, Union).
• These are all within the NYC metro area (except parts of Mercer/Monmouth).

Major Urban Clusters

• NYC Metro (NJ side): Hudson County (Jersey City, Hoboken), Bergen County, Essex County (Newark), Passaic County (Paterson), Union County (Elizabeth). ~4.5M in NJ portion.
• Philadelphia Metro (NJ side): Camden, Burlington, Gloucester counties. ~1.3M.
• Central Jersey Corridor: Middlesex (New Brunswick), Monmouth (coast), Somerset, Mercer (Trenton/Princeton). Dense suburban/exurban.

South Jersey Contrast

Southern counties (Salem, Cumberland, Cape May, Atlantic) are less dense, more rural, agricultural, tourism-oriented (shore towns). Atlantic City is the only significant urban center.

Drivers

• Proximity to NYC/Philly jobs.
• Transit (NJ Transit, PATH, highways).
• Historical industrial base (now services, pharma, finance, logistics).

New Jersey is the most densely populated state (1,263/sq mi) — almost entirely due to this northern/central concentration.