9 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Chattanooga | 1 | 196,108 | 182,271 | 1.19% | 1,378 | 142 | City |
| Soddy-Daisy | 2 | 13,619 | 13,052 | 0.7% | 588 | 23 | City |
| Red Bank | 3 | 12,146 | 11,926 | 0.31% | 1,852 | 7 | City |
| Collegedale | 4 | 11,704 | 11,122 | 0.84% | 938 | 12 | City |
| Signal Mountain | 5 | 8,888 | 8,854 | 0.07% | 1,062 | 8 | Town |
| Lookout Mountain | 6 | 2,023 | 2,068 | -0.34% | 1,506 | 1 | Town |
| Lakesite | 7 | 1,991 | 1,865 | 1.07% | 1,144 | 2 | City |
| Walden | 8 | 1,969 | 1,984 | -0.1% | 557 | 4 | Town |
| Ridgeside | 9 | 442 | 447 | -0.23% | 2,615 | 0 | City |
Chattanooga is the largest city in Hamilton County, with a population of 196,108.
Ridgeside is the smallest city in Hamilton County, with a population of 442.
There are 9 cities in Hamilton County, Tennessee.