11 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Mont Belvieu | 1 | 10,769 | 7,866 | 5.7% | 605 | 17.79 | City |
| Beach City | 2 | 3,460 | 3,225 | 1.38% | 772 | 4.48 | City |
| Winnie | 3 | 2,206 | 2,677 | -3.08% | 558 | 3.96 | CDP |
| Anahuac | 4 | 2,017 | 1,967 | 0.5% | 973 | 2.07 | City |
| Stowell | 5 | 2,011 | 1,855 | 0.85% | 200 | 10.05 | CDP |
| Old River-Winfree | 6 | 1,359 | 1,306 | 0.82% | 868 | 1.57 | City |
| Ames | 7 | 1,262 | 949 | 5.25% | 382 | 3.30 | City |
| Kenefick | 8 | 840 | 624 | 5.39% | 542 | 1.55 | Town |
| Cove | 9 | 710 | 549 | 4.72% | 583 | 1.22 | City |
| Oak Island | 10 | 229 | 334 | -3.78% | 191 | 1.20 | CDP |
| Dayton Lakes | 11 | 61 | 46 | 5.17% | 71 | 0.86 | City |
Mont Belvieu is the largest city in Chambers County, with a population of 10,769.
Dayton Lakes is the smallest city in Chambers County.
There are 11 cities in Chambers County, Texas.