ZIP Codes of Onslow County, NC

Population & People
Population & People
Total Population
210,315
Household Income
Household Income
Median Income
$74,545
Housing
Housing
Total Housing Units
92,799
Business & Economy
Business & Economy
Total Businesses
3,438
Employment
Employment
Employment Rate
43.62%
Education
Education
Bachelor's Degree+
26.96%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 13 ZIPs in this county.
Data Last Updated: June 1, 2026
ZIP Codes:13 ZIP Codes (11 Standard, 2 PO Box, 0 Unique) [See All]
Area Codes:252 / 472 / 910
Timezone:Eastern (GMT -05:00)
Local Time:2:12:59 PM
Population:210,315 [See All]
FIPS:37133
CBSA:Jacksonville, NC
Land Area:760 sq mi
Water Area:61 sq mi
Coordinates:34.6931, -77.3815
Quick Link:
https://www.zip-codes.com/county/nc-onslow.asp
Need Onslow data in your app? Look up ZIP, county, and city data with a single API call.
Try Free
Wide geographic spread
ZIPs range from 142.3 sq mi down to 2.79 — a 51× sprawl ratio.

Standout ZIPs in this County


Most Populous
Jacksonville · 49,141 people
23.4% of county total
Highest Income
Camp Lejeune · $125,491 median
1.7× county average
Largest Land Area
Jacksonville · 142.3 sq mi
Spans the most ground
Fastest Growth
Holly Ridge · 47.7% (10-yr)
7,312 → 10,797 residents
Most Educated
Holly Ridge · 45.6% bachelor's+
3,826 of 8,391 adults 25+

Things worth knowing about Onslow County


210,315 residents live across 13 ZIPs covering 760 sq mi, served by 10 distinct USPS-recognized cities.

Population moved from 184,745 to 206,807 from 2014 to 2024 — a +11.9% change. 8 ZIPs gained residents, 2 lost.

The county's wealthiest ZIP 28542 (Camp Lejeune, $125,491 median) and poorest ZIP 28543 (Tarawa Terrace, $50,649) are 10.8 miles apart — a 2.5× income gap across local geography.

Median home values vary 2.7× across this county — from $141,700 in 28544 (Midway Park) to $386,100 in 28445 (Holly Ridge).

Density varies 20× across the county — from 107 people/sq mi in 28542 (Camp Lejeune) to 2,172 in 28543 (Tarawa Terrace).

Educational attainment ranges from 15.7% bachelor's+ in 28544 (Midway Park) to 45.6% in 28445 (Holly Ridge) — the breadth of educational profiles across the area.

Within North Carolina, this is the #12 most populous of 100 counties and ranks #24 for median household income with the #16 fastest decade growth .

Weighted by population, the typical household earns about $69,937 across the county — reflecting what a typical resident sees, not a simple ZIP average.

27.0% of adults age 25+ hold a bachelor's degree or higher (31,603 of 117,218 reporting).

11 Standard delivery, 2 PO Box only, 0 single-entity Unique ZIPs serve this county.

All ZIP Codes in Onslow County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
28540JacksonvilleStandard49,141$65,625142.3-1.8%
28546JacksonvilleStandard47,256$63,56192.35.3%
28547Camp LejeuneStandard21,346$67,58852.612.2%
28574RichlandsStandard20,990$67,416131.229.5%
28539HubertStandard18,351$66,97681.021.8%
28584SwansboroStandard14,939$87,41480.026.3%
28460Sneads FerryStandard13,532$88,90843.544.5%
28445Holly RidgeStandard10,797$84,01693.047.7%
28543Tarawa TerraceStandard6,069$50,6492.812.2%
28544Midway ParkStandard4,386$52,3549.1-22.1%
28542Camp LejeunePO Box3,508$125,49132.8
28545Mcas New RiverStandard0.0
28541JacksonvillePO Box0.0

Adjacent & Nearby Counties