6 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Newport | 1 | 24,453 | 25,113 | -0.54% | 3,194 | 7.66 | City |
| Portsmouth | 2 | 17,081 | 17,839 | -1.06% | 742 | 23.02 | Town |
| Middletown | 3 | 16,184 | 17,062 | -1.23% | 1,274 | 12.70 | Town |
| Tiverton | 4 | 15,747 | 16,340 | -0.91% | 542 | 29.06 | Town |
| Jamestown | 5 | 5,410 | 5,548 | -0.72% | 573 | 9.45 | Town |
| Little Compton | 6 | 3,505 | 3,613 | -0.74% | 171 | 20.55 | Town |
Newport is the largest city in Newport County, with a population of 24,453.
Little Compton is the smallest city in Newport County.
There are 6 cities in Newport County, Rhode Island.