5 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Rockwall | 1 | 56,366 | 47,745 | 3.16% | 1,905 | 29.59 | City |
| Royse City | 2 | 31,084 | 13,719 | 12.58% | 1,618 | 19.21 | City |
| Fate | 3 | 28,768 | 18,412 | 7.76% | 2,428 | 11.85 | City |
| Heath | 4 | 12,232 | 9,747 | 4.24% | 990 | 12.36 | City |
| McLendon-Chisholm | 5 | 5,819 | 3,656 | 8.04% | 463 | 12.58 | City |
Rockwall is the largest city in Rockwall County, with a population of 56,366.
McLendon-Chisholm is the smallest city in Rockwall County.
There are 5 cities in Rockwall County, Texas.