Note: As defined by the US Census Bureau, a city's official boundaries often extend miles beyond the city itself and may even cross county lines. As such, several thousand US cities officially exist in two or more counties (and therefore appear on multiple counties' lists of cities.)
City | Rank | 2024 Pop. | 2020 Pop. | Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Vineland | 1 | 61,126 | 60,644 | 0.54% | 894 | 68.4 | City |
| Millville | 2 | 27,415 | 27,413 | 0.21% | 653 | 42.0 | City |
| Bridgeton | 3 | 27,119 | 27,160 | 1.33% | 4,354 | 6.2 | City |
| Upper Deerfield township | 4 | 7,867 | 7,622 | 0.47% | 252 | 31.2 | Township |
| Fairfield township | 5 | 5,361 | 5,529 | 0.39% | 130 | 41.1 | Township |
| Maurice River township | 6 | 5,250 | 6,196 | 2.6% | 56 | 93.2 | Township |
| Commercial township | 7 | 4,654 | 4,658 | 0.24% | 146 | 31.9 | Township |
| Hopewell township | 8 | 4,358 | 4,377 | 0.11% | 146 | 29.9 | Township |
| Deerfield township | 9 | 3,163 | 3,126 | 0.51% | 188 | 16.8 | Township |
| Lawrence township | 10 | 3,080 | 3,074 | 0.23% | 83 | 36.9 | Township |
| Downe township | 11 | 1,380 | 1,397 | -0.14% | 29 | 48.4 | Township |
| Stow Creek township | 12 | 1,322 | 1,316 | 0.38% | 72 | 18.3 | Township |
Note: City markers shown outside the county boundary mean that a part of the city extends into this county, but is primarily located in an adjacent county.
Vineland is the largest city in Cumberland County.
Stow Creek township is the smallest city in Cumberland County.
There are 12 cities in Cumberland County, New Jersey.