14 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Wallace | 1 | 3,512 | 3,412 | 0.57% | 1,100 | 3.19 | Town |
| Warsaw | 2 | 2,741 | 2,726 | 0.11% | 852 | 3.22 | Town |
| Rose Hill | 3 | 1,391 | 1,366 | 0.36% | 963 | 1.45 | Town |
| Beulaville | 4 | 1,151 | 1,118 | 0.61% | 745 | 1.54 | Town |
| Magnolia | 5 | 869 | 834 | 0.81% | 814 | 1.07 | Town |
| Faison | 6 | 804 | 788 | 0.38% | 928 | 0.87 | Town |
| Kenansville | 7 | 761 | 766 | -0.13% | 360 | 2.12 | Town |
| Greenevers | 8 | 589 | 566 | 0.86% | 371 | 1.59 | Town |
| Teachey | 9 | 476 | 466 | 0.42% | 452 | 1.05 | Town |
| Potters Hill | 10 | 455 | 755 | -0.22% | 85 | 5.35 | CDP |
| Bowdens | 11 | 339 | 665 | 7.28% | 249 | 1.36 | CDP |
| Calypso | 12 | 331 | 325 | 0.3% | 331 | 1 | Town |
| Watha | 13 | 231 | 178 | 5% | 170 | 1.36 | Town |
| Chinquapin | 14 | 9 | 9 | 12.5% | 6 | 1.39 | CDP |
Wallace is the largest city in Duplin County, with a population of 3,512.
Chinquapin is the smallest city in Duplin County.
There are 14 cities in Duplin County, North Carolina.