Ashburn is a census-designated place (CDP) in Loudoun County, Virginia, United States. As of the 2010 United States Census, its population was 43,511,up from 3,393 twenty years earlier. It is 30 miles (48 km) northwest of Washington, D.C., and part of the Washington metropolitan area.

Ashburn is located in eastern Loudoun County at 39°02′37″N 077°29′15″W (39.0437192, −77.4874899) and its average elevation is 295 feet (90 m) above sea level. It is 7 miles (11 km) southeast of Leesburg, the county seat, and the same distance north of Dulles International Airport. As drawn by the U.S. Census Bureau, the area counted as “Ashburn” extends north to Virginia State Route 7, east to Virginia State Route 28, and southwest to the Dulles Greenway (VA 267). The Ashburn CDP is bordered to the north by the Belmont, Lansdowne, One Loudoun, and University Center CDPs; to the east by the Kincora, Dulles Town Center, and Sterling CDPs; to the southwest by the Moorefield and Broadlands CDPs; and to the west by the Goose Creek Village CDP.

According to the 2010 United States Census, the Ashburn CDP has a total area of 15.55 square miles (40.27 km2), of which 15.30 square miles (39.63 km2) are land and 0.25 square miles (0.65 km2) are water. The area is drained by Broad Run, which flows northward through the eastern part of the CDP toward the Potomac River. 

Ashburn is a great place for lovers of the outdoors and nature with many parks and recreation areas. Ashburn Park is a popular park featuring nature trails, multiple playgrounds & picnic areas in a wooded setting. Trailside Park is a 20-acre park with a playground also has 3 lighted baseball fields & a roller hockey rink. Bles Park is a public green space featuring scenic wetlands, plus soccer fields, trails & a playground. Hampshire Park is a 9-acre park featuring 2 lacrosse fields, restrooms & a paved path with access to the W&OD trail. Ray Muth Sr. Memorial Park is a 17-acre park with soccer, football & lacrosse pitches & an accessible trail. Washington & Old Dominion Railroad Regional Park is a 45-mile multiuse rail-trail provides a path for hikers, runners, bikers, skaters & even horses. And Lyndora Park is a 17-acre open space with woods, trails & a creek, plus ball fields, picnic areas & a playground. 

Great schools are another feature of living in Ashburn. Highly rated schools in Ashburn include Stone Bridge High School, Belmont Station Elementary School, Ashburn Elementary School, Sanders Corner Elementary School, Newton-Lee Elementary School, Broad Run High School, Moorefield Station Elementary School, Ashburn Colored School, Hillside Elementary School, Discovery Elementary School, Steuart W. Weller Elementary School, Marblehead Drive, Cedar Lane Elementary School, Trailside Middle School, Loudoun County Public Schools, St Theresa School, Dominion Trail Elementary School, The Axon School, Loudoun School for Advanced Studies, Farmwell Station Middle School, Virginia Academy, Mill Run Elementary School, The Compass School, The Goddard School of Ashburn, Montessori Academy at Belmont Greene, Golden Pond School, Historic Ashburn Colored School, Loudoun Montessori School, Vision Montessori, CASA County After Schools Activities, Russian School of Mathematics -Ashburn, BeanTree Learning – Ashburn Campus, School of Rock, Everbrook Academy of Ashburn, Montessori Kids Universe Ashburn, Horizons Art School, Celebree School of Ashburn Farm, Hope Preschool, Winwood Children’s Center, Playful Platos Montessori, Nextide Academy, La Petite Academy of Ashburn, Ashburn Early Learning Academy, Eagle Ridge Middle School, ZippSlip, Primrose School of Ashburn, Kiddie Academy of Moorefield Station, The Academy of Computer Education (TrainACE), Ashburn Village KinderCare, Merit School of Broadlands, Golden Meadow KinderCare, Broadlands KinderCare, The Montessori School at Goose Creek Preserve, Guidepost Montessori at Broadlands, Kiddie Academy of Ashburn, Chesterbrook Academy Preschool, Mindframe Education, Little Learners Academy, Waxpool Elementary School (ES-31), Rock Ridge High School, Nova Enrichment Academy, Minnieland Academy at Ashbriar, Legacy Elementary School, Rosa Lee Carter Elementary School, Stone Hill Middle School, Creighton’s Corner Elementary, Minnieland Academy at Belmont, St. David’s Episcopal Church and School, Winwood Children’s Center, and Brambleton Middle School.

Ashburn is known as a great place for foodies and is full of great restaurants including Black Hog Ashburn, Slapfish, Ford’s Fish Shack Ashburn, Eddie Merlot’s Prime Aged Beef & Seafood Ashburn, matchbox, Blue Ridge Grill, Passion Fin, Pazzo Pomodoro – Ashburn, Uncle Julio’s Loudoun, and Parrando’s Tex-Mex Grill. 

Ashburn is a great location for shopping with destinations including Ashburn Village Center, Ashburn Farm Village Center, Old Ashburn Square, Broadlands Village Center,  Southern Walk Plaza, Old Town Center, Ashburn Farm Market Center, Shoppes at Ryan Park, Ashbrook Commons Plaza, and Village Center at Belmont Greene.