Smithfield, NC zip code
Smithfield, North Carolina uses one zip code: 27577. Most of it is in Johnston County. Together these zip codes are home to about 28K people.
Zip codes
1
Population
28K
All zips combined
Largest zip
27577
28,354 residents
Zip codes in Smithfield
| Zip | Type | Population | IncomeMedian income |
|---|---|---|---|
| 27577 | 28,354 | $62,758 |