11 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Anderson Creek | 1 | 18,059 | 14,899 | 7.14% | 893 | 20 | CDP |
| Spout Springs | 2 | 12,980 | 9,879 | 7.14% | 1,253 | 10 | CDP |
| Angier | 3 | 8,929 | 5,702 | 7.79% | 2,013 | 4 | Town |
| Dunn | 4 | 8,833 | 8,438 | 0.9% | 1,248 | 7 | City |
| Erwin | 5 | 4,950 | 4,523 | 1.75% | 1,176 | 4 | Town |
| Lillington | 6 | 4,857 | 4,811 | 0.19% | 678 | 7 | Town |
| Buies Creek | 7 | 3,751 | 3,388 | 1.46% | 1,240 | 3 | CDP |
| Coats | 8 | 2,360 | 2,145 | 1.86% | 1,528 | 2 | Town |
| Bunnlevel | 9 | 1,126 | 779 | 3.49% | 149 | 8 | CDP |
| Mamers | 10 | 629 | 613 | -2.02% | 104 | 6 | CDP |
| Cameron | 11 | 267 | 241 | 1.91% | 220 | 1 | Town |
Anderson Creek is the largest city in Harnett County, with a population of 18,059.
Cameron is the smallest city in Harnett County, with a population of 267.
There are 11 cities in Harnett County, North Carolina.