Onslow County GIS Maps

Onslow County Maps

The maps below show a few of the county map styles included in our downloads. County packages include map exports in JPEG, PNG, SVG, PDF and GeoTIFF formats plus more than 20 GIS layers for mapping, research and analysis. Available layers include zip codes, area codes, subdivisions, school districts, political boundaries, roads, water features, points of interest and more.

County packages also include historical county demographics, business intelligence, analytical dashboards, AI-ready prompts, markdown files and related reference data. Everything is organized to save hours of manual work collecting current data, cleaning it and joining it together. That makes it easier to move faster on analytics, due diligence, business planning and location research. Paid packages are built for commercial use, but some package contents include source-specific attribution or notice guidance. Review Licensing & Data Source Notices.

Onslow County Parcels

Onslow County has 95,202 mapped parcels covering 411,576 acres. The median assessed value is $241,728. The median lot size is 0.46 acres. 4,232 parcels are 10 acres or larger. Of the parcels with a recorded build year, half were built in 2000 or earlier. The records carry 75,004 distinct owner names. Owner names, mailing addresses, site addresses, assessed values and lot sizes are on nearly every parcel. Browse the interactive Onslow County Parcel viewer here.

Onslow County Parcel Data Coverage

Field coverage measured across all Onslow County parcel records. Download free sample data here.

Onslow County Population

Onslow County had 204,576 residents in 2020. That was 15.1% higher than in 2010. Onslow County added 54,221 people between 2000 and 2020, which points to steady long-term growth. The county is fairly spread out, with about 268 people per square mile. Some of the county's most populated postal areas include Jacksonville, Jacksonville and Camp Lejeune.

Population Trend in Onslow County NC

Onslow County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.

Onslow County Zip Codes

Onslow County has 13 zip codes. Some of the county's most populated zip codes include Jacksonville (28540), Jacksonville (28546) and Camp Lejeune (28547). Jacksonville is the largest zip by population, with about 49,739 residents or 24% of the county total. Together, the three largest zips account for about 59% of all county residents based on 2020 population estimates.

Most Populated Zip Codes in Onslow County NC

Onslow County Zip Code populations and trends per most recent census data.

Onslow County Demographics

Onslow County has a median age of 27.1, which makes the county a little younger than North Carolina overall. About 24.3% of residents are under 18, while 9.7% are 65 or older. That gives the county a fairly even mix of younger families and older adults. The largest age group is 25 to 44 at about 32.6% of the population, which points to a solid working-age base. About 26.1% of adults have a bachelor's degree or higher, above the statewide figure of 34.7%. The county is majority White by population, with Hispanic, Asian, Black and multiracial residents making up a meaningful share of the local mix.

Key Demographics for Onslow County NC

Onslow County School Districts

Onslow County is served by 2 public school districts with 27,397 students enrolled in 2024. Several larger districts account for a substantial share of students across the county map area. Those three districts account for about 100% of public school enrollment in the map area. Total enrollment has stayed fairly steady in recent years, based on district totals from 2017 to 2024.

Largest School Districts by Enrollment in Onslow County NC

Onslow County school district enrollment and trends per most recent NCES reporting data.

Onslow County Housing & Real Estate

Onslow County has a median home value of $219,500 and a median gross rent of $1,198. About 61% of occupied homes in the county are owner-occupied, so the local housing market leans heavily toward ownership. Home values run below the North Carolina median, while rents come in above the state average. In March 2026, the median listing price was $339,450 and homes spent about 58 days on the market.

Businesses in Onslow County, NC

Onslow County has 6,808 business listings across 742 categories. The largest categories in Onslow County business listings are Real Estate Agents (210, 3.1%), Churches & Religious Organizations (190, 2.8%), and Auto Repair (121, 1.8%). The full Onslow County business listings dataset includes names, categories, addresses and contact details where available. Onslow County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.

Top Business Categories in Onslow County, NC

Onslow County Business Listings

Onslow County business listings sourced from Overture Maps. Includes locations with a high level of confidence.

Onslow County Basemaps

Onslow County map and data packages include a set of useful basemaps to help you get started quickly. These include a custom light grey canvas, USGS topo, imagery and other reference layers that make it easier to build clear, meaningful county maps using the included GIS layers, your own data or both. Pre-rendered map tiles for the light grey basemap are included so you can use them offline or host them on your own CDN.

Preview a Live Package Demo

See exactly what is included in a county data package. Inspect how files are organized, the interactive data explorer and how maps and analytics are laid out. The demo loads a real sample package from North Carolina — explore the full structure before you buy.