Note: As defined by the US Census Bureau, a city's official boundaries often extend miles beyond the city itself and may even cross county lines. As such, several thousand US cities officially exist in two or more counties (and therefore appear on multiple counties' lists of cities.)
City | Rank | 2024 Pop. | 2020 Pop. | Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Chattanooga | 1 | 188,850 | 181,568 | 0.97% | 1,327 | 142.4 | City |
| East Ridge | 2 | 21,885 | 22,188 | -0.35% | 2,642 | 8.3 | City |
| Soddy-Daisy | 3 | 13,280 | 13,094 | 0.35% | 573 | 23.2 | City |
| Red Bank | 4 | 12,113 | 11,921 | 0.4% | 1,847 | 6.6 | City |
| Collegedale | 5 | 11,595 | 11,117 | 1.04% | 929 | 12.5 | City |
| Middle Valley | 6 | 11,442 | 12,100 | -0.76% | 1,172 | 9.8 | CDP |
| Signal Mountain | 7 | 8,935 | 8,858 | 0.21% | 1,068 | 8.4 | Town |
| Harrison | 8 | 8,404 | 8,485 | 0.55% | 1,247 | 6.7 | CDP |
| Apison | 9 | 4,487 | 4,220 | 3.32% | 277 | 16.2 | CDP |
| Sale Creek | 10 | 3,102 | 2,899 | 0.62% | 103 | 30.1 | CDP |
| Falling Water | 11 | 2,154 | 1,534 | 3.16% | 430 | 5.0 | CDP |
| Lookout Mountain | 12 | 2,051 | 2,059 | -0.1% | 1,527 | 1.3 | Town |
| Walden | 13 | 1,977 | 1,984 | -0.1% | 560 | 3.5 | Town |
| Lakesite | 14 | 1,962 | 1,865 | 1.24% | 1,128 | 1.7 | City |
| Lone Oak | 15 | 1,647 | 1,265 | 1.92% | 254 | 6.5 | CDP |
| Fairmount | 16 | 1,567 | 1,467 | -5.43% | 374 | 4.2 | CDP |
| Ridgeside | 17 | 447 | 447 | 0% | 2,645 | 0.2 | City |
| Ooltewah | 18 | 424 | 744 | -4.29% | 686 | 0.6 | CDP |
Note: City markers shown outside the county boundary mean that a part of the city extends into this county, but is primarily located in an adjacent county.
Chattanooga is the largest city in Hamilton County.
Ooltewah is the smallest city in Hamilton County.
There are 18 cities in Hamilton County, Tennessee.