Johnston County's 2026 population is estimated at 264,666, reflecting a 2.89% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Johnston County is the 9th largest county in North Carolina. The 2010 population was 169,676 and has grown 55.98% since 2010.
Data after 2023 is projected based on recent change
Overall: 38.1 years
Female: 38.7 years
Male: 37.4 years
There are 175,927 adults, (32,148 of whom are seniors) in Johnston County.
Female: 119,036 (50.8%)
Male: 115,227 (49.2%)
The racial composition of Johnston County includes 64.21% White, 16.91% Black or African American, 8.59% other race, and smaller percentages for Native American, Asian, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 150,425 | 64.21% |
| Black or African American | 39,604 | 16.91% |
| Other race | 20,118 | 8.59% |
| Two or more races | 19,713 | 8.41% |
| Native American | 2,293 | 0.98% |
| Asian | 1,948 | 0.83% |
| Native Hawaiian or Pacific Islander | 162 | 0.07% |
Johnston County 's average per capita income is $53,562. Household income levels show a median of $83,384. The poverty rate stands at 10.63%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $113,288 | $129,601 |
| Families | $101,912 | $118,900 |
| Households | $83,384 | $103,515 |
| Non Families | $45,566 | $59,163 |
Average Income
Median Household Income
Poverty Rate