Lillington
- County:
- Harnett County
- County Seat:
- Yes
- Area (mi²):
- 8.124
- State:
- North Carolina
Lillington is a town located in Harnett County, North Carolina. Lillington has a 2026 population of 4,848. It is also the county seat of Harnett County. Lillington is currently growing at a rate of 1.76% annually and its population has increased by 0.77% since the most recent census, which recorded a population of 4,811 in 2020.