5 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Rockwall | 1 | 56,446 | 47,748 | 2.64% | 1,908 | 30 | City |
| Royse City | 2 | 32,702 | 13,756 | 10.69% | 1,535 | 21 | City |
| Fate | 3 | 31,989 | 18,423 | 7.61% | 2,627 | 12 | City |
| Heath | 4 | 12,372 | 9,753 | 3.66% | 1,001 | 12 | City |
| McLendon-Chisholm | 5 | 6,108 | 3,657 | 7.18% | 486 | 13 | City |
Rockwall is the largest city in Rockwall County, with a population of 56,446.
McLendon-Chisholm is the smallest city in Rockwall County, with a population of 6,108.
There are 5 cities in Rockwall County, Texas.