Charleston County GIS Maps

Charleston 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.

Charleston County Population

Charleston County had 408,235 residents in 2020. That was 16.6% higher than in 2010. Charleston County added 98,266 people between 2000 and 2020, which points to steady long-term growth. The county is fairly spread out, with about 445 people per square mile. Some of the county's most populated postal areas include Mount Pleasant, Charleston and Mount Pleasant.

Population Trend in Charleston County SC

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

Charleston County Zip Codes

Charleston County has 26 zip codes. Some of the county's most populated zip codes include Mount Pleasant (29464), Charleston (29414) and Mount Pleasant (29466). Mount Pleasant is the largest zip by population, with about 51,287 residents or 13% of the county total. Together, the three largest zips account for about 34% of all county residents based on 2020 population estimates.

Most Populated Zip Codes in Charleston County SC

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

Charleston County Demographics

Charleston County has a median age of 39, which makes the county a little younger than South Carolina overall. About 19.7% of residents are under 18, while 17.5% 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 35.7% of the population, which points to a solid working-age base. About 49% of adults have a bachelor's degree or higher, above the statewide figure of 31.5%. 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 Charleston County SC

Charleston County School Districts

Charleston County is served by 1 public school district with 50,856 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 Charleston County SC

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

Charleston County Housing & Real Estate

Charleston County has a median home value of $450,800 and a median gross rent of $1,506. About 63% of occupied homes in the county are owner-occupied, so the local housing market leans heavily toward ownership. Home values run above the South Carolina median, while rents come in above the state average. In March 2026, the median listing price was $699,999 and homes spent about 47 days on the market.

Businesses in Charleston County, SC

Charleston County has 25,906 business listings across 1,108 categories. The largest categories in Charleston County business listings are Real Estate Agents (599, 2.3%), Churches & Religious Organizations (490, 1.9%), and Landmark And Historical Building (398, 1.5%). The full Charleston County business listings dataset includes names, categories, addresses and contact details where available. Charleston County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.

Top Business Categories in Charleston County, SC

Charleston County Business Listings

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

Charleston County Basemaps

Charleston 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 South Carolina — explore the full structure before you buy.