Onslow County's 2026 population is estimated at 219,678, reflecting a 1.15% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Onslow County is the 13th largest county in North Carolina. The 2010 population was 186,918 and has grown 17.53% since 2010.
Overall: 27.7 years
Female: 31.4 years
Male: 25 years
There are 156,392 adults, (21,189 of whom are seniors) in Onslow County.
Female: 93,429 (44.9%)
Male: 114,477 (55.1%)
The racial composition of Onslow County includes 67.21% White, 12.04% Black or African American, 3.68% other race, and smaller percentages for Asian, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 139,725 | 67.21% |
| Two or more races | 29,752 | 14.31% |
| Black or African American | 25,041 | 12.04% |
| Other race | 7,661 | 3.68% |
| Asian | 3,934 | 1.89% |
| Native American | 1,465 | 0.7% |
| Native Hawaiian or Pacific Islander | 328 | 0.16% |
Onslow County 's average per capita income is $47,145. Household income levels show a median of $68,148. The poverty rate stands at 11.59%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $84,154 | $103,195 |
| Families | $76,749 | $93,514 |
| Households | $68,148 | $85,766 |
| Non Families | $45,313 | $62,770 |
Average Income
Median Household Income
Poverty Rate