| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Vineland | 1 | 63,095 | 60,618 | 0.63% | 922 | 68 | City |
| Bridgeton | 2 | 28,297 | 27,140 | -0.04% | 4,544 | 6 | City |
| Millville | 3 | 28,250 | 27,410 | 0.54% | 673 | 42 | City |
| Upper Deerfield | 4 | 8,174 | 7,658 | 0.78% | 262 | 31 | Township |
| Greenwich | 5 | 5,915 | 5,457 | 3.3% | 559 | 11 | Township |
| Greenwich | 6 | 5,033 | 4,911 | 0.14% | 560 | 9 | Township |
| Commercial | 7 | 4,792 | 4,656 | 0.52% | 150 | 32 | Township |
| Maurice River | 8 | 4,769 | 6,207 | -0.23% | 51 | 93 | Township |
| Deerfield | 9 | 3,268 | 3,134 | 0.52% | 194 | 17 | Township |
| Lawrence | 10 | 3,191 | 3,075 | 0.76% | 86 | 37 | Township |
| Downe | 11 | 1,423 | 1,397 | 0.49% | 29 | 48 | Township |
| Stow Creek | 12 | 1,363 | 1,315 | 0.52% | 75 | 18 | Township |
| Greenwich | 13 | 786 | 763 | 0.9% | 44 | 18 | Township |
| Shiloh | 14 | 459 | 441 | 0.66% | 382 | 1 | Borough |
Vineland is the largest city in Cumberland County, with a population of 63,095.
Shiloh is the smallest city in Cumberland County, with a population of 459.
There are 14 cities in Cumberland County, New Jersey.