19 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| New Bedford | 1 | 100,819 | 100,993 | 0.06% | 5,041 | 20 | City |
| Fall River | 2 | 94,248 | 93,940 | 0.22% | 2,845 | 33.12 | City |
| Taunton | 3 | 61,470 | 59,467 | 0.87% | 1,316 | 46.71 | City |
| Attleboro | 4 | 46,820 | 46,475 | 0.18% | 1,748 | 26.78 | City |
| Dartmouth | 5 | 33,475 | 31,359 | 0.08% | 549 | 60.93 | Town |
| Easton | 6 | 25,630 | 25,073 | 0.52% | 891 | 28.76 | Town |
| Mansfield | 7 | 23,932 | 23,862 | 0.15% | 1,190 | 20.10 | Town |
| Norton | 8 | 19,222 | 19,212 | 0.2% | 691 | 27.83 | Town |
| Somerset | 9 | 18,259 | 18,289 | 0.14% | 2,312 | 7.90 | Town |
| Swansea | 10 | 17,527 | 17,170 | 0.44% | 773 | 22.68 | Town |
| Westport | 11 | 16,577 | 16,344 | 0.35% | 333 | 49.82 | Town |
| Raynham | 12 | 16,111 | 15,146 | 1.46% | 787 | 20.48 | Town |
| Fairhaven | 13 | 15,982 | 15,909 | 0.33% | 1,291 | 12.38 | Town |
| Seekonk | 14 | 15,897 | 15,543 | 0.54% | 864 | 18.39 | Town |
| Rehoboth | 15 | 13,895 | 12,522 | 2.14% | 296 | 46.93 | Town |
| Acushnet | 16 | 10,654 | 10,557 | 0.24% | 578 | 18.43 | Town |
| Freetown | 17 | 9,410 | 9,207 | 0.64% | 273 | 34.46 | Town |
| Dighton | 18 | 8,218 | 8,109 | 0.22% | 373 | 22.03 | Town |
| Berkley | 19 | 6,880 | 6,769 | 0.42% | 417 | 16.51 | Town |
New Bedford is the largest city in Bristol County, with a population of 100,819.
Berkley is the smallest city in Bristol County.
There are 19 cities in Bristol County, Massachusetts.