9 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Myrtle Beach | 1 | 41,675 | 35,973 | 2.81% | 1,780 | 23 | City |
| Conway | 2 | 30,776 | 25,176 | 3.78% | 1,099 | 28 | City |
| North Myrtle Beach | 3 | 21,266 | 18,924 | 2.25% | 942 | 23 | City |
| Surfside Beach | 4 | 4,420 | 4,160 | 1.19% | 2,269 | 2 | Town |
| Loris | 5 | 2,915 | 2,465 | 3.19% | 640 | 5 | City |
| Aynor | 6 | 1,082 | 985 | 1.79% | 600 | 2 | Town |
| Briarcliffe Acres | 7 | 589 | 484 | 3.7% | 926 | 1 | Town |
| Atlantic Beach | 8 | 472 | 200 | 12.92% | 2,914 | 0 | Town |
| Nichols | 9 | 218 | 230 | -1.36% | 163 | 1 | Town |
Myrtle Beach is the largest city in Horry County, with a population of 41,675.
Nichols is the smallest city in Horry County, with a population of 218.
There are 9 cities in Horry County, South Carolina.