There are 20 cities in Onslow County, North Carolina.
Note: As defined by the US Census Bureau, a city's official boundaries often extend miles beyond the city itself and may even cross county lines. As such, several thousand US cities officially exist in two or more counties (and therefore appear on multiple counties' lists of cities.)
City | Rank | 2024 Population | 2020 Population | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Jacksonville | 1 | 72,198 | 74,922 | -0.93% | 1,479 | 48.8 | City |
| Piney Green | 2 | 15,013 | 14,309 | 0.83% | 1,101 | 13.6 | CDP |
| Half Moon | 3 | 8,386 | 8,384 | 0.04% | 1,130 | 7.4 | CDP |
| Holly Ridge | 4 | 5,478 | 4,244 | 5.96% | 1,296 | 4.2 | Town |
| Surf City | 5 | 5,077 | 3,893 | 6.19% | 661 | 7.7 | Town |
| Swansboro | 6 | 4,264 | 3,756 | 3.07% | 1,908 | 2.2 | Town |
| Richlands | 7 | 2,455 | 2,294 | 1.66% | 1,487 | 1.7 | Town |
| Cape Carteret | 8 | 2,283 | 2,230 | 0.57% | 905 | 2.5 | Town |
| Pumpkin Center | 9 | 2,139 | 1,850 | -0.28% | 1,688 | 1.3 | CDP |
| Sneads Ferry | 10 | 2,056 | 2,326 | -2% | 541 | 3.8 | CDP |
| Cedar Point | 11 | 1,826 | 1,776 | 0.66% | 818 | 2.2 | Town |
| Beulaville | 12 | 1,144 | 1,118 | 0.53% | 740 | 1.5 | Town |
| North Topsail Beach | 13 | 1,089 | 1,009 | 1.87% | 175 | 6.2 | Town |
| Maysville | 14 | 848 | 819 | 0.83% | 991 | 0.9 | Town |
| Peletier | 15 | 798 | 770 | 0.89% | 221 | 3.6 | Town |
| Bogue | 16 | 713 | 692 | 0.71% | 260 | 2.7 | Town |
| Topsail Beach | 17 | 507 | 466 | 2.01% | 115 | 4.4 | Town |
| Potters Hill | 18 | 456 | 755 | -0.44% | 85 | 5.4 | CDP |
| Pink Hill | 19 | 455 | 455 | 0% | 981 | 0.5 | Town |
| Chinquapin | 20 | 8 | 9 | 0% | 6 | 1.4 | CDP |
Note: City markers shown outside the county boundary mean that a part of the city extends into this county, but is primarily located in an adjacent county.
Jacksonville is the largest city in Onslow County.
Chinquapin is the smallest city in Onslow County.
There are 20 cities in Onslow County, North Carolina.