County ProfileNC
Johnston County
Population: 215,999 · 12 ZIP codes
Demographics
Source: U.S. Census Bureau (ACS/Decennial). Estimates vary by year.
People
Total population
215,999
People
Median age
38.1
Housing
Total households
85,591
Income
Median household income
$83,384
Housing
Total housing units
91,218
Employment
Employment rate
63.5%
Education
Bachelor’s degree or higher
28.9%
Healthcare
Insured population
89.6%
County details
Local time 03:01:11(ET)| Name | Johnston |
|---|---|
| Total ZIP codes | 12total |
| ZIP codes (by type) | 9 Standard3 PO Box |
| Area code | 919, 984 |
| Timezone | Eastern Time (ET) |
| Coordinates | 35.5134188, -78.3673482 |
| Land area | 792 sq miles(2,051.3 km²) |
Map of Johnston county, North Carolina with ZIP codes
Cities and Communities in Johnston County
Compare the largest cities in Johnston County by population, median income, and growth. Use the table below to analyze key demographic shifts across the region.
| City | Population | Median incomeHousehold | ZIP codes |
|---|---|---|---|
| Clayton | 26,307 | $78,822 | 3ZIPs |
| Smithfield | 11,292 | $43,270 | 1ZIPs |
| Selma | 6,317 | $41,368 | 1ZIPs |
| Benson | 3,967 | $67,102 | 1ZIPs |
| Four Oaks | 2,158 | $72,826 | 1ZIPs |
| Pine Level | 2,046 | $75,263 | 1ZIPs |
| Kenly | 1,491 | $57,045 | 1ZIPs |
| Princeton | 1,315 | $45,500 | 1ZIPs |
| Micro | 458 | $44,531 | 1ZIPs |
| Wilsons Mills | 31 | — | 1ZIPs |
— Data unavailable or suppressed by the U.S. Census Bureau for areas with small sample sizes to protect individual privacy.
ZIP Codes in Johnston County
Review the most populated postal areas across Johnston County. Use the ranking below to compare resident density and demographic scales between the county's major zones.
| ZIP | City | Median incomeHousehold | Population (ZIP) |
|---|---|---|---|
| 27520 | Clayton | $86,322 | 46,478 |
| 27527 | Clayton | $115,035 | 33,827 |
| 27577 | Smithfield | $62,758 | 24,972 |
| 27576 | Selma | $66,831 | 17,568 |
| 27504 | Benson | $66,724 | 16,613 |
| 27524 | Four Oaks | $75,827 | 13,258 |
| 27542 | Kenly | $66,038 | 9,607 |
| 27569 | Princeton | $78,850 | 8,854 |
| 27568 | Pine Level | $66,071 | 1,187 |
| 27555 | Micro | $44,531 | 458 |
| 27593 | Wilsons Mills | — | 31 |
| 27528 | Clayton | — | — |
Data Sources & Citations
The geographic and demographic information presented on this site is compiled from publicly available, authoritative sources, including:
- United States Census BureauDemographic, population, housing, and socioeconomic data sourced from Census Bureau datasets, including the Decennial Census and the American Community Survey (ACS).Census Data
- United States Postal Service (USPS)ZIP code classifications, delivery types, and postal designations used for reference purposes. USPS ZIP codes are intended for mail delivery and may not always align exactly with Census geographic boundaries.USPS