Loudoun County GIS Maps
Loudoun County, Virginia, has 420,959 residents and covers 515.8 square miles. The population grew 34.8% between the 2010 and 2020 census. More residents moved in than left over that decade. The FIPS code for Loudoun County is 51107.
Leesburg is the county's largest population center. Loudoun County also includes 17 zip codes, 1 public school district and 23 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.
Loudoun County Trends
- Population
- 420,959▴
- Median Home Value
- $701,000▴
- K-12 Enrollment
- 81,486▾
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.
Loudoun 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.
Loudoun County Population
Loudoun County had 420,959 residents in 2020. That was 34.8% higher than in 2010. Loudoun County added 251,360 people between 2000 and 2020, which points to steady long-term growth. The county is fairly spread out, with about 816 people per square mile. Some of the county's most populated postal areas include Dulles, Broadlands and Leesburg.
Population Trend in Loudoun County VA
Loudoun County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.
Loudoun County Zip Codes
Loudoun County has 17 zip codes. Some of the county's most populated zip codes include Dulles (20147), Broadlands (20148) and Leesburg (20176). Dulles is the largest zip by population, with about 66,394 residents or 16% of the county total. Together, the three largest zips account for about 43% of all county residents based on 2020 population estimates.
Most Populated Zip Codes in Loudoun County VA
| ZIP | Area | Population | Trend |
|---|---|---|---|
| 20147 | Dulles | 66,394 | ▴ 22.8% |
| 20148 | Broadlands | 61,793 | ▴ 118.3% |
| 20176 | Leesburg | 51,777 | ▴ 11.3% |
| 20164 | Sterling | 40,888 | ▴ 8.3% |
| 20152 | Chantilly | 37,013 | ▴ 48.4% |
| Download all zip code data | |||
Loudoun County Zip Code populations and trends per most recent census data.
Loudoun County Demographics
Loudoun County has a median age of 37.8, which makes the county a little younger than Virginia overall. About 27.1% of residents are under 18, while 10.4% 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 36.2% of the population, which points to a solid working-age base. About 64% 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 Loudoun County VA
Median Age
37.8
Under 18
27.1%
Age 65+
10.4%
Bachelor's+
64%
Loudoun County School Districts
Loudoun County is served by 1 public school district with 81,486 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 Loudoun County VA
| District | Enrollment | Share | Trend |
|---|---|---|---|
| Loudoun County Public Schools | 81,486 | 100% | ▾ -0.2% |
| Download all school district data | |||
Loudoun County school district enrollment and trends per most recent NCES reporting data.
Loudoun County Housing & Real Estate
Loudoun County has a median home value of $701,000 and a median gross rent of $2,317. About 78% 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 $849,675 and homes spent about 17 days on the market.
Loudoun County Housing Mix
Loudoun County housing mix: owner, renter and vacant units.
Loudoun County Housing Trends
Loudoun County median home value and rent trend (last 5 years).
Businesses in Loudoun County, VA
Loudoun County has 14,903 business listings across 971 categories. The largest categories in Loudoun County business listings are Real Estate Agents (463, 3.1%), Contractors (236, 1.6%), and Professional Services (204, 1.4%). The full Loudoun County business listings dataset includes names, categories, addresses and contact details where available. Loudoun County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.
Top Business Categories in Loudoun County, VA
| Category | Businesses | Share |
|---|---|---|
| Real Estate Agents | 463 | 3.1% |
| Contractors | 236 | 1.6% |
| Professional Services | 204 | 1.4% |
| Churches & Religious Organizations | 201 | 1.3% |
| Medical Offices | 187 | 1.3% |
| Auto Repair | 183 | 1.2% |
| Hair Salons | 180 | 1.2% |
| Dental Offices | 169 | 1.1% |
| Gyms & Fitness | 166 | 1.1% |
| Beauty Salons | 157 | 1.1% |
Loudoun County Business Listings
| Business | Category | City |
|---|---|---|
| Loudoun Club 12 | Abuse And Addiction Treatment | Leesburg |
| NOVA Loudoun Campus Bookstore | Academic Bookstore | Sterling |
| Nautical Bowls | Acai Bowls | Dulles |
| Lansdowne Resort | Accommodation | Leesburg |
| Kenneth K. Liu, CPA | Accountant | Ashburn |
| Body by Dion Personal Training | Active Life | Leesburg |
| Healthy Healing Acupuncture Ashburn | Acupuncture | Ashburn |
| Addiction Rehab Leesburg | Addiction Rehabilitation Center | Leesburg |
| Le Tache Couples Boutique | Adult Store | Sterling |
| Truck Ads | Advertising Agency | Middleburg |
| Download Loudoun County business listings | ||
Loudoun County business listings sourced from Overture Maps. Includes locations with a high level of confidence.
Loudoun County Basemaps
Loudoun 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 Loudoun County Data Package
This page shows a preview of what's included in the Loudoun 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 Loudoun County. These nearby pages include the same mix of county maps, demographic summaries, school district context, housing trends and package links.