| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Mont Belvieu | 1 | 11,254 | 7,872 | 5.44% | 633 | 18 | City |
| Beach City | 2 | 3,488 | 3,234 | 1.45% | 779 | 4 | City |
| Anahuac | 3 | 2,036 | 1,968 | 0.64% | 982 | 2 | City |
| Old River-Winfree | 4 | 1,515 | 1,329 | 1.34% | 967 | 2 | City |
| Ames | 5 | 1,347 | 957 | 5.07% | 408 | 3 | City |
| Kenefick | 6 | 908 | 620 | 5.58% | 586 | 2 | Town |
| Cove | 7 | 737 | 553 | 4.54% | 606 | 1 | City |
| Dayton Lakes | 8 | 63 | 45 | 5% | 73 | 1 | City |
Mont Belvieu is the largest city in Chambers County, with a population of 11,254.
Dayton Lakes is the smallest city in Chambers County, with a population of 63.
There are 8 cities in Chambers County, Texas.