Fairfax County GIS Maps
Fairfax County, Virginia, has 1,150,309 residents and covers 391 square miles. The population grew 6.3% between the 2010 and 2020 census. More residents moved in than left over that decade. The FIPS code for Fairfax County is 51059.
Herndon is the county's largest population center. Fairfax County also includes 43 zip codes, 1 public school district and 27 municipalities. Those boundaries help explain why population, schools, and housing can look different from one part of the county to another. The map below shows how those county lines, zip codes, and school districts fit together, and the sections that follow use that same geography to show population, demographics, school enrollment and housing patterns in more detail.
Maps, GIS layers and sample data. Paid packages add full layers, analytics and database files.
Fairfax County Trends
- Population
- 1,150,309▴
- Median Home Value
- $699,700▴
- K-12 Enrollment
- 179,323▾
County analytics dashboards with historical trends & projections included in package downloads.
Free starter access previews county maps, lightweight GIS, and sample data. Paid packages unlock full GIS layers, analytics, and database files.
Fairfax 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.
Fairfax County Population
Fairfax County had 1,150,309 residents in 2020. That was 6.3% higher than in 2010. Fairfax County added 180,560 people between 2000 and 2020, which points to steady long-term growth. The county is fairly spread out, with about 2,942 people per square mile. Some of the county's most populated postal areas include Fairfax, Annandale and Herndon.
Population Trend in Fairfax County VA
Fairfax County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.
Fairfax County Zip Codes
Fairfax County has 43 zip codes. Some of the county's most populated zip codes include Fairfax (22030), Annandale (22003) and Herndon (20171). Fairfax is the largest zip by population, with about 60,431 residents or 5% of the county total. Together, the three largest zips account for about 15% of all county residents based on 2020 population estimates.
Most Populated Zip Codes in Fairfax County VA
| ZIP | Area | Population | Trend |
|---|---|---|---|
| 22030 | Fairfax | 60,431 | ▴ 9.7% |
| 22003 | Annandale | 59,372 | ▴ 6% |
| 20171 | Herndon | 51,759 | ▴ 12.8% |
| 22015 | Burke | 43,941 | ▴ 1.9% |
| 20170 | Herndon | 42,756 | ▴ 3.7% |
| Download all zip code data | |||
Fairfax County Zip Code populations and trends per most recent census data.
Fairfax County Demographics
Fairfax County has a median age of 38.9, which is close to the Virginia average. About 23.1% of residents are under 18, while 14.5% 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 34.6% of the population, which points to a solid working-age base. About 64.3% of adults have a bachelor's degree or higher, above the statewide figure of 41.5%. The county has a more diverse population mix, with no single race or ethnicity accounting for all of the local story.
Key Demographics for Fairfax County VA
Median Age
38.9
Under 18
23.1%
Age 65+
14.5%
Bachelor's+
64.3%
Fairfax County School Districts
Fairfax County is served by 1 public school district with 179,323 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, but it is slightly lower than it was in 2017.
Largest School Districts by Enrollment in Fairfax County VA
| District | Enrollment | Share | Trend |
|---|---|---|---|
| Fairfax County Public Schools | 179,323 | 100% | ▾ -0.8% |
| Download all school district data | |||
Fairfax County school district enrollment and trends per most recent NCES reporting data.
Fairfax County Housing & Real Estate
Fairfax County has a median home value of $699,700 and a median gross rent of $2,230. About 68% of occupied homes in the county are owner-occupied, so the local housing market leans heavily toward ownership. Home values run above the Virginia median, while rents come in above the state average. In March 2026, the median listing price was $799,000 and homes spent about 22 days on the market.
Fairfax County Housing Mix
Fairfax County housing mix: owner, renter and vacant units.
Fairfax County Housing Trends
Fairfax County median home value and rent trend (last 5 years).
Businesses in Fairfax County, VA
Fairfax County has 38,409 business listings across 1,177 categories. The largest categories in Fairfax County business listings are Real Estate Agents (1,183, 3.1%), Medical Offices (796, 2.1%), and Professional Services (637, 1.7%). The full Fairfax County business listings dataset includes names, categories, addresses and contact details where available. Fairfax County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.
Top Business Categories in Fairfax County, VA
| Category | Businesses | Share |
|---|---|---|
| Real Estate Agents | 1,183 | 3.1% |
| Medical Offices | 796 | 2.1% |
| Professional Services | 637 | 1.7% |
| Churches & Religious Organizations | 618 | 1.6% |
| Contractors | 586 | 1.5% |
| Dental Offices | 567 | 1.5% |
| Community & Nonprofits | 467 | 1.2% |
| Parks & Recreation | 433 | 1.1% |
| Hair Salons | 416 | 1.1% |
| Software Development | 385 | 1.0% |
Fairfax County Business Listings
| Business | Category | City |
|---|---|---|
| STM Works LLC | 3D Printing Service | Fairfax |
| A New Beginning | Abuse And Addiction Treatment | Chantilly |
| NOVA Annandale Bookstore and Cafe | Academic Bookstore | Annandale |
| South Block | Acai Bowls | Springfield |
| Lincoln at Fair Oaks | Accommodation | Fairfax |
| Carol Zirkle | Accountant | Fairfax Station |
| Kent Gardens Recreation Club | Active Life | McLean |
| Rose Wellness | Acupuncture | Oakton |
| Drug Rehab Centreville | Addiction Rehabilitation Center | Centreville |
| Medtech Institute - Falls Church Campus | Adult Education | Falls Church |
| Download Fairfax County business listings | ||
Fairfax County business listings sourced from Overture Maps. Includes locations with a high level of confidence.
Fairfax County Basemaps
Fairfax 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.
Get the Full Fairfax County Data Package
This page shows a preview of what's included in the Fairfax County data package. The full package gives you a ready-to-use county data system with GIS layers, historical data, maps, database files and planning tools that save hours of manual data gathering, cleanup and joins. Everything is organized to help you skip data wrangling and start analysis faster.
- 20+ GIS layers for zip codes, school districts, roads, water, boundaries and more
- Historical county demographics, housing, income and trend data
- ZIP code population files and school district enrollment history
- Database files, markdowns, AI-ready prompts and documentation
- Map exports in PNG, JPEG, PDF, SVG and GeoTIFF formats
- Offline-ready data explorer, map and analytics tools
Paid packages support commercial use, client work, and derived outputs. Some package contents may include source-specific attribution or provider notices. See Licensing & Data Source Notices.
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Nearby Counties
Browse county data pages for the counties that border Fairfax County. These nearby pages include the same mix of county maps, demographic summaries, school district context, housing trends and package links.