6 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Newport | 1 | 24,166 | 25,114 | -0.65% | 3,156 | 8 | City |
| Portsmouth | 2 | 17,215 | 17,839 | -0.51% | 748 | 23 | Town |
| Middletown | 3 | 16,610 | 17,056 | 0% | 1,308 | 13 | Town |
| Tiverton | 4 | 15,698 | 16,336 | -0.76% | 540 | 29 | Town |
| Jamestown | 5 | 5,480 | 5,552 | -0.13% | 580 | 9 | Town |
| Little Compton | 6 | 3,531 | 3,614 | -0.31% | 172 | 21 | Town |
Newport is the largest city in Newport County, with a population of 24,166.
Little Compton is the smallest city in Newport County, with a population of 3,531.
There are 6 cities in Newport County, Rhode Island.