Johnston County GIS Maps

Johnston 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.

Johnston County Parcels

Johnston County has 125,040 mapped parcels covering 484,923 acres. The median assessed value is $291,940. The median lot size is 0.73 acres. 9,712 parcels are 10 acres or larger. Single family homes account for 60.7% of parcels. Vacant follows at 19.3% and auxiliary improvements at 6.4%. Of the parcels with a recorded build year, half were built in 2003 or earlier. The records carry 89,299 distinct owner names. About 6% of parcels list an owner mailing address outside North Carolina. Owner names, mailing addresses, site addresses, assessed values and lot sizes are on nearly every parcel. Browse the interactive Johnston County Parcel viewer here.

Johnston County Parcel Data Coverage

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

Johnston County Population

Johnston County had 215,999 residents in 2020. That was 27.9% higher than in 2010. Johnston County added 94,034 people between 2000 and 2020, which points to steady long-term growth. The county is fairly spread out, with about 273 people per square mile. Some of the county's most populated postal areas include Clayton, Clayton and Smithfield.

Population Trend in Johnston County NC

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

Johnston County Zip Codes

Johnston County has 11 zip codes. Some of the county's most populated zip codes include Clayton (27520), Clayton (27527) and Smithfield (27577). Clayton is the largest zip by population, with about 46,478 residents or 22% of the county total. Together, the three largest zips account for about 49% of all county residents based on 2020 population estimates.

Most Populated Zip Codes in Johnston County NC

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

Johnston County Demographics

Johnston County has a median age of 38.3, which makes the county a little younger than North Carolina overall. About 25.1% of residents are under 18, while 13.5% 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 33.6% of the population, which points to a solid working-age base. About 27.6% 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 Johnston County NC

Johnston County School Districts

Johnston County is served by 1 public school district with 37,320 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 Johnston County NC

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

Johnston County Housing & Real Estate

Johnston County has a median home value of $267,600 and a median gross rent of $1,007. About 77% 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 below the state average. In March 2026, the median listing price was $371,050 and homes spent about 60 days on the market.

Businesses in Johnston County, NC

Johnston County has 7,124 business listings across 726 categories. The largest categories in Johnston County business listings are Churches & Religious Organizations (308, 4.3%), ATMs (130, 1.8%), and Gas Stations (128, 1.8%). The full Johnston County business listings dataset includes names, categories, addresses and contact details where available. Johnston County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.

Top Business Categories in Johnston County, NC

Johnston County Business Listings

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

Johnston County Basemaps

Johnston 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.