| Name | Johnston County |
| State | North Carolina |
| FIPS Code | 37101 |
| County Seat | Smithfield |
| Timezone | Eastern Standard Time (EST) |
| Population (2022) | 169,122 |
| Population Growth Rate(2000-2022) | 27.9% |
| Majority Ethnicity | White 79.65% |
| Public School Majority Ethnicity | White 46% |
| Partisan Voting Index | Republican:+13 |
| Unemployment Rate (December 2024) | 3.1% |
| Area Code(s) | 919 / 984 / 910 |
| Race/Ethnicity | Percentage of Population (2022) |
|---|---|
| White | 79.65% |
| African American | 18.84% |
| Hispanic | 0.63% |
| Asian | 0.79% |
| Native American | 0.05% |
| Hawaiin/Pacific Islander | 0.05% |
| Race/Ethnicity | Percentage of Public School Students (2023) |
|---|---|
| White | 46.06% |
| African American | 17.89% |
| Hispanic | 29.51% |
| Asian | 0.82% |
| Native American | 0.29% |
| Hawaiin/Pacific Islander | 0.05% |