New Jersey, the most densely populated US state, packs significant urban centers into its 8,722 sq mi. The 2020 Census reveals the hierarchy:
| Rank | City | County | 2020 Population | Notes |
|---|---|---|---|---|
| 1 | Newark | Essex | 311,549 | State's largest; Port of NY/NJ; Rutgers-Newark; Prudential Center |
| 2 | Jersey City | Hudson | 292,449 | Gold Coast; finance/tech hub; PATH to Manhattan; Liberty State Park |
| 3 | Paterson | Passaic | 159,732 | Silk City; Great Falls NHS; diverse immigrant communities |
| 4 | Elizabeth | Union | 137,298 | Port Newark/Elizabeth; Newark Airport (part); Mills at Jersey Gardens |
| 5 | Lakewood | Ocean | 135,158 | Fastest-growing; Orthodox Jewish hub; Georgian Court Univ. |
| 6 | Edison | Middlesex | 107,588 | Raritan Center (largest industrial park); Asian-American plurality; Menlo Park Mall |
| 7 | Woodbridge | Middlesex | 103,639 | Township (not city); 10 communities; NJ Turnpike HQ; Woodbridge Center |
| 8 | Toms River | Ocean | 95,438 | Township; Jersey Shore gateway; 2012 Sandy recovery |
| 9 | Hamilton | Mercer | 92,297 | Township; Trenton suburb; Veterans Park; Grounds for Sculpture |
| 10 | Trenton | Mercer | 90,871 | State capital; Roebling wire rope; "Trenton Makes" bridge; decline/revitalization |