8 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Rock Hill | 1 | 76,370 | 74,654 | 0.38% | 1,702 | 45 | City |
| Tega Cay | 2 | 15,001 | 12,880 | 2.42% | 3,263 | 5 | City |
| York | 3 | 10,467 | 8,556 | 3.14% | 1,194 | 9 | City |
| Clover | 4 | 7,947 | 6,780 | 2.52% | 1,680 | 5 | Town |
| Hickory Grove | 5 | 476 | 455 | 0.85% | 279 | 2 | Town |
| Sharon | 6 | 474 | 462 | 0.42% | 362 | 1 | Town |
| McConnells | 7 | 290 | 280 | 0.69% | 86 | 3 | Town |
| Smyrna | 8 | 55 | 55 | 0% | 78 | 1 | Town |
Rock Hill is the largest city in York County, with a population of 76,370.
Smyrna is the smallest city in York County, with a population of 55.
There are 8 cities in York County, South Carolina.