• Source: Loudoun County, Virginia

Loudoun County () is in the northern part of the Commonwealth of Virginia in the United States. In 2020, the census returned a population of 420,959, making it Virginia's third-most populous county. The county seat is Leesburg. Loudoun County is part of the Washington–Arlington–Alexandria, DC–VA–MD–WV Metropolitan Statistical Area.
As of 2023, Loudoun County had a median household income of $156,821, the highest of any county in the nation.




History






= 18th century

=

Loudoun County was established in 1757 from Fairfax County. The county is named for John Campbell, Fourth Earl of Loudoun and governor general of Virginia from 1756 to 1759. Western settlement began in the 1720s and 1730s with Quakers, Scots-Irish, Germans and others moving south from Pennsylvania and Maryland, and also by English and enslaved Africans moving upriver from Tidewater.
By the time of the American Revolution, Loudoun County was Virginia's most populous county. It was also rich in agriculture, and the county's contributions of grain to George Washington's Continental Army earned it the nickname "Breadbasket of the Revolution."




= 19th century

=
During the War of 1812, important Federal documents and government archives were evacuated from Washington and stored at Leesburg.
Local tradition holds that these documents were stored at Rokeby House.
U.S. president James Monroe treated Oak Hill Plantation as a primary residence from 1823 until his death on July 4, 1831. The Loudoun County coat of arms and flag, granted by the English College of Arms, memorialize the special relationship between Britain and the United States that developed through his Monroe Doctrine.
Early in the American Civil War, the Battle of Ball's Bluff took place near Leesburg on October 21, 1861. Future jurist Oliver Wendell Holmes Jr. was critically wounded in that battle along the Potomac River. During the Gettysburg Campaign in June 1863, Confederate major general J.E.B. Stuart and Union cavalry clashed in the battles of Aldie, Middleburg, and Upperville. Confederate partisan John S. Mosby based his operations in Loudoun and adjoining Fauquier County (for a more in-depth account of the history of Loudoun County during the Civil War, see Loudoun County in the American Civil War).




= 20th century

=
During World War I, Loudoun County was a major breadbasket for supplying provisions to soldiers in Europe. Loudoun farmers implemented new agricultural innovations such as vaccination of livestock, seed inoculations and ensilage. The county experienced a boom in agricultural output, outputting an annual wheat output of 1.04 million bushels in 1917, the largest of any county in Virginia that year. 1.2 million units of home produce were produced at home, much of which went to training sites across the state such as Camp Lee. The Smith–Lever Act of 1914 established increased agricultural education in Virginia counties, increasing agricultural yields. After the war, a plaque was dedicated to the "30 glorious dead" from the county who died in the Great War. Five of the thirty died on the front, while the other twenty five died while in training or in other locations inside the United States.
In 1962, Washington Dulles International Airport was built in southeastern Loudoun County in Sterling. Since then, Loudoun County has experienced a high-tech boom and rapid growth. Accordingly, many have moved to eastern Loudoun and become residents of planned communities such as Sterling Park, Sugarland Run, Cascades, Ashburn Village, and Ashburn Farm, making that section a veritable part of the Washington suburbs. Others have moved to the county seat or to the small towns and rural communities of the Loudoun Valley.




Government and politics



Between 1952 and 2008, Loudoun was a Republican-leaning county. However, this has changed in recent years with Democrats winning Loudoun in all statewide campaigns after Republicans narrowly carried it in 2014. As of the 2023 elections, Democrats hold a 7 to 2 majority on the Board of Supervisors and a 6 to 3 majority on the School Board, but Republicans hold all five countywide elected constitutional offices (Clerk of the Circuit Court, Commissioner of the Revenue, Commonwealth's Attorney, Sheriff,
and Treasurer). This makes Loudoun County a reliable state bellwether, having voted for every statewide presidential election winner since 1932.
The county's official motto, I Byde My Time, is borrowed from the coat of arms of the Earl of Loudoun. In the mid to late 20th century, as northerners gradually migrated to Southern suburbs, Loudoun County increasingly shifted to the Republican Party in supporting presidential candidates, and more local ones. Before the 2008 election of Barack Obama, county voters had not supported a Democratic president since Lyndon B. Johnson in 1964.
In recent years, the county's rapid growth in its eastern portion, settled by educated professionals working in or near Washington, D.C., has changed the demographics of the county, and the Democratic Party has become increasingly competitive. After giving Senator Barack Obama nearly 54% of its presidential vote in 2008, the county supported Republican Bob McDonnell in 2009, who received 61% of the gubernatorial vote. Voters also replaced two incumbent Democratic delegates, making Loudoun's state House delegation all Republican. In 2012 county voters again supported Obama, who took 51.5% of the vote, with Republican challenger Mitt Romney garnering 47%.
Democrats carried the county again in the 2016 presidential election, when Loudoun swung heavily towards Hillary Clinton, giving her 55.1% to Donald Trump's 38.2%. In 2020, Joe Biden won 61.5% to Trump's 36.5%. A year later, in the 2021 Virginia gubernatorial election, Democratic nominee and former Governor Terry McAuliffe won the county with 55.3% to now Republican Governor Glenn Youngkin's 44.2%. Loudoun was one of ten counties that was won by McAuliffe, though it was his smallest margin of victory in Northern Virginia.




= County Board of Supervisors

=
Like many counties in Virginia, Loudoun is locally governed by a board of supervisors, the Loudoun County Board of Supervisors. The chairman of the board is elected by county voters at-large while the remaining supervisors are elected from eight single-member districts roughly equal in population. All nine members serve concurrent terms of four years. The board handles policy and land use issues and sets the budget; it appoints a county administrator to handle the county government's day-to-day operations. As of the 2023 elections, the chairman of the board and six district supervisors are Democrats; the remaining two supervisors are Republicans.
In November 2019, Democrats took over the Board of Supervisors. Voters elected Juli E. Briskman (D) in Algonkian District, with 6,763 votes (54.09%) replacing incumbent Suzanne M. Volpe (R) who polled 5,719 votes (45.74%). Juli Briskman had been fired from her job as a marketing analyst for a United States government and military subcontractor, after an AFP photo of her flipping off the motorcade of Donald Trump went viral on social media in 2017.




Geography



According to the U.S. Census Bureau, Loudoun County has a total area of 521 square miles (1,350 km2), of which 516 square miles (1,340 km2) is land and 6 square miles (16 km2) (1.1%) is water. It is bounded on the north by the Potomac River; across the river are Frederick, Washington and Montgomery counties in Maryland; it is bounded on the south by Prince William and Fauquier counties, on the west by watershed of the Blue Ridge Mountain across which are Jefferson County, West Virginia and Clarke County, and on the east by Fairfax County. The Bull Run Mountains and Catoctin Mountain bisect the county. To the west of the range is the Loudoun Valley. Bisecting the Loudoun Valley from Hillsboro to the Potomac River is Short Hill Mountain.




= Adjacent counties

=




= National protected area

=
Harpers Ferry National Historical Park




Economy


Traditionally a rural county, Loudoun's population has grown dramatically since the 1980s. Having undergone heavy suburbanization since 1990, Loudoun has a full-fledged service economy. It is home to world headquarters for several Internet-related and high tech companies, including Verizon Business, Telos Corporation, and Orbital Sciences Corporation. Like Fairfax County's Dulles Corridor, Loudoun County has economically benefited from the existence of Washington Dulles International Airport, the majority of which is in the county along its border with Fairfax.
Loudoun County retains a strong rural economy. The equine industry has an estimated revenue of $78 million. It is home to the Morven Park International Equestrian Center which hosts national horse trials. In addition, a growing wine industry has produced several internationally recognized wines. Loudoun County now has 40 wineries and over 25 active farms. Loudoun has rich soil and was in the mid-19th century a top wheat-producing county in the fourth largest wheat-producing state.
MCI, Inc. (formerly WorldCom), a subsidiary of Verizon Communications, is headquartered in Ashburn, Loudoun County. It announced it would move its headquarters to Ashburn in 2003. AOL had its headquarters at 22000 AOL Way in Dulles in unincorporated Loudoun County. In 2007 AOL announced it would move its headquarters from Loudoun County to New York City; it would continue to operate its Virginia offices. Orbital Sciences Corporation has its headquarters in Dulles.
Loudoun County houses over 60 massive data centers, many of which correspond to Amazon Web Services’s (AWS) us-east-1 region. These data centers are estimated to carry 70 percent of global web traffic.
Before its dissolution, Independence Air (originally Atlantic Coast Airlines) was headquartered in Dulles. At one time Atlantic Coast Airlines had its headquarters in Sterling. Before its dissolution, MAXjet Airways was headquartered on the grounds of Washington-Dulles International Airport.




= Top employers

=
According to the county's comprehensive annual financial reports, the top employers in the county are:




Demographics



From 1890 to 1940, the county had a decline in population as people moved to cities for more opportunities. The decline was likely highest among African Americans, who had worked in an agricultural economy that was becoming increasingly mechanized. During the first half of the 20th century, African Americans moved out of rural areas to cities in the Great Migration. In the 21st century, African Americans now form a proportionally much smaller portion of the county’s population than they once did, and the Hispanic and Asian populations of the county outnumber them significantly.




= 2020 census

=




= 2010 Census

=
As of the census of 2010, there were 312,311 people, 104,583 households, and 80,494 families residing in the county. The population density was 606 inhabitants per square mile (234/km2). There were 109,442 housing units at an average density of 212 per square mile (82/km2). The racial makeup of the county was:

68.7% White
14.7% Asian (7.90% Indian, 1.74% Filipino, 1.61% Chinese, 1.34% Korean, 1.22% Vietnamese, 1.09% Pakistani)
7.3% African American
0.3% Native American
0.1% Pacific Islander
4.9% of some other race
4.0% of two or more races
12.4% of the population were Hispanic or Latino of any race (3.4% Salvadoran, 1.8% Mexican, 1.3% Peruvian, 0.9% Puerto Rican, 0.6% Honduran, 0.6% Bolivian, 0.5% Guatemalan, 0.5% Colombian)
According to the 2010 census, 10.5% of residents reported being of German ancestry, while 9.1% reported Irish, 7.7% English, 5.4% Italian and 5.2% American ancestry.
The most spoken languages other than English in Loudoun County as of 2018 were Spanish, spoken by 10.8% of the population, and Telugu, spoken by 2.8% of the population. Almost 25% of Loudoun County residents were born outside of the United States, with the largest groups being from India, El Salvador, and Korea.
As of 2000 there were 59,900 households, out of which 43.10% had children under the age of 18 living with them, 64.30% were married couples living together, 7.80% had a female householder with no husband present, and 24.80% were non-families. 18.40% of all households were made up of individuals, and 3.70% had someone living alone who was 65 years of age or older. The average household size was 2.82 and the average family size was 3.24.
In the county, 29.80% of the population was under the age of 18, 5.70% was from 18 to 24, 38.90% from 25 to 44, 20.00% from 45 to 64, and 5.60% was 65 years of age or older. The median age was 34 years. For every 100 females, there were 97.80 males. For every 100 females age 18 and over, there were 95.50 males.
In 2011, Census survey data concluded that Loudoun County had the highest median income in the country at $119,134.
From 1980 to 2014, deaths from cancer in Loudoun County decreased by 46 percent, the largest such decrease of any county in the United States.
From 2017 to 2018, Loudoun County saw an increase of 18.5% of households experiencing homelessness, a 21% increase for single adults, and a 36% increase for families. Homelessness for veterans in the county decreased by 16% from 2017 to 2018.




Government and infrastructure


The National Transportation Safety Board operates the Ashburn Aviation Field Office in Ashburn, an unincorporated area of Loudoun County. The Federal Aviation Administration's Washington Air Route Traffic Control Center, the second-busiest facility of its kind in the nation, is located in Leesburg.
Emergency services are provided by the Loudoun County Combined Fire and Rescue System with the Office of Emergency Management. LC-CFRS is a combination system that utilizes some 500 volunteers and over 600 career firefighters, EMT/paramedics, dispatchers, and support staff. LCFR is one of the largest fire and rescue systems in Virginia.
Law enforcement in Loudoun County is provided by the Loudoun County Sheriff's Office, which is Virginia's largest sheriff's office, as well as three town police departments: Leesburg Police, Purcellville Police, and Middleburg Police. The county's highways are also patrolled by Virginia State Police troopers. Dulles Airport and the Dulles Toll Road are patrolled by the Metropolitan Washington Airports Authority Police Department.
The Loudoun County Public Library System has eleven branches in the county. The library's Outreach Department of the Loudoun County Public Library is a resource for those who cannot easily access branch services. The public library system has won several awards, including 10th place for libraries serving a comparably sized population in 2006
Loudoun County is one of the counties in Virginia that elects to cover their employees in the Virginia Mortgage Assistance Program (VMAP). The program is designed to make housing more affordable for civil service workers in Virginia.




Transportation






= Airports

=

Loudoun County has two airports: Washington Dulles International and Leesburg Executive.




= Bus

=
Loudoun County operates its own bus public transit system, known as Loudoun County Commuter Bus.




= Rail

=
The Silver Line of the Washington Metro provides service at the Dulles Airport, Loudoun Gateway, and Ashburn stations.




= Major highways

=




Education


The county is served by Loudoun County Public Schools (LCPS). LCPS serves over 70,000 students from Kindergarten through 12th grade and is Virginia's fifth largest school system. Loudoun County schools recently ranked 11th in the United States in terms of educational achievement versus funds spent. Loudoun County also sends students to its Loudoun Academy of Science, formerly housed within Dominion High School now within the Academies of Loudoun, and is eligible to send students to Thomas Jefferson High School for Science and Technology, a STEM magnet school in Alexandria, Virginia.
Loudoun County is home to ten private schools: Loudoun Country Day School, a Pre-K–8 independent school in Leesburg; Notre Dame Academy, an independent non-denominational day high school in Middleburg; the Foxcroft School, a boarding school for girls located in Middleburg; Dominion Academy, a Non-denominational Christian school, K–8 in Leesburg; Loudoun Classical School, a Protestant classical 7th-12th grade school in Purcellville; Leesburg Christian School, a K–12 school in Leesburg; St. Theresa School, a K–8 Roman Catholic school in Ashburn; Village Montessori School at Bluemont, an accredited Pre-K through Elementary Montessori school in Bluemont; Christian Faith & Fellowship School, a PreK–12 non-denominational Christian school and Loudoun County's only private school accredited by the Association of Christian Schools International; and Loudoun School for Advanced Studies (formerly the Ideal Schools High School,) an independent non-denominational school in Ashburn.
In terms of post-secondary education, Loudoun County is home to a variety of colleges and universities, including: Patrick Henry College, a private Christian college; Northern Virginia Community College in Sterling (branch campus); George Washington University (satellite campus); George Mason University (satellite campus); Marymount University (satellite campus); Shenandoah University (satellite campus); and Strayer University (satellite campus). Loudoun is also home to a satellite campus of the Virginia–Maryland College of Veterinary Medicine and the Janelia Farm Research Campus of the Howard Hughes Medical Institute.




Communities






= Towns

=




= Census-designated places

=




= Other unincorporated communities

=




= Population ranking

=
The population ranking of the following table is based on 2018 estimates by the United States Census Bureau.
† county seat




Notable people



James Monroe constructed and resided at Oak Hill near Aldie after his presidency. American Civil War Brigadier General Robert H. Chilton (Chief of Staff under Robert E. Lee) was a native of Loudoun County. World War II general George C. Marshall resided at Dodona Manor in Leesburg. Essayist and journalist Russell Baker grew up in Morrisonville, Virginia and his book Growing Up highlights his childhood in rural Virginia. Entertainer Arthur Godfrey lived near historic Waterford, Virginia. Loudoun County is also the birthplace of Julia Neale Jackson, mother of Stonewall Jackson, and Susan Catherine Koerner Wright, mother of the Wright Brothers.

Madeleine Albright (1937–2022) – U.S. Secretary of State in Clinton Administration
William H. Ash (1859–1908) – Former slave who was one of the first African-American politicians to be elected to the Virginia House of Delegates
Russell Baker (1925–2019) – Pulitzer Prize-winning author of Growing Up (1983, Autobiography)
Geraldine Brooks (1955–) – Pulitzer Prize–winning author
John Champe – Revolutionary War soldier and double agent
Roger Preston Chew, (1843-1921) – Horse artillery commander in the Confederate Army of Northern Virginia, prominent West Virginia businessman, railroad executive and West Virginia legislator
John L. Dagg (1794–1884) – Baptist theologian, pastor, educator, and president of Mercer University, GA (1844–54)
Westmoreland Davis (1859–1942) – Governor of Virginia
Richard Henry Dulany (1820–1906) – Colonel of the 7th Virginia Cavalry during the Civil War
Michael Farris (born 1951) – Founder of Home School Legal Defense Association and Patrick Henry College in Purcellville; unsuccessful Republican nominee for Lieutenant Governor of Virginia in 1993
Joe Gibbs (1940–) – Lived just west of Leesburg while coaching the Washington Redskins
Arthur Godfrey (1903–1983) – Popular national radio and television personality
Darrell Green (1960–) – Former Washington Redskin and inductee to the NFL Pro Football Hall of Fame
Pamela Harriman (1920–1997) – Daughter-in-law of Sir Winston Churchill and U.S. Ambassador to France
Gina Haspel (1956–) – Director of the CIA, first female ever appointed to the position
Annia Hatch (1978–) – Cuban American 2x Olympic silver medalist in gymnastics, currently lives in Ashburn
Fred Hetzel (1942–) – Former professional basketball player
Barbara Holland (1933–2010) – author
Tony Horwitz (1958–2019) – Pulitzer Prize–winning author
John Janney (1798–1872) – Member of the Virginia General Assembly and officer of the Virginia Secession Convention of 1861
Sheila Johnson (1949–) – Entertainment and sports entrepreneur and philanthropist.
Wilton Lackaye (1862-1932) – American stage and film actor, the original Broadway stage Svengali, 1895
Lyndon LaRouche (1921–2019) – Controversial American politician, activist, and founder of the LaRouche movement
Marc Leepson (1945–) – Journalist, historian, author
Sandra Lerner (c. 1953–) – Entrepreneur and philanthropist
Mark Levin (1957–) – Author and conservative talk radio host
George C. Marshall (1880–1959) – General of the Army (5-star), U.S. Secretary of State, Secretary of Defense, and author of the "Marshall Plan"
Stevens T. Mason (1811–1843) – First governor of Michigan (Democrat, 1837–40)
Andrew McCabe (1968–) – Former Deputy Director of the FBI
Charles F. Mercer (1788–1858) – Founded village of Aldie; U.S. Congressman from Virginia
Billy Mitchell (1879–1936) – Controversial Army officer and military aviation pioneer
James Monroe (1758–1831) – 5th President of the United States
Oliver North (1943–) – Former USMC Officer and figure in the Iran–Contra scandal; commentator and host on the Fox network
Patton Oswalt (1969–) – American stand-up comedian, writer and actor
Vinton Liddell Pickens (1900–1993) – artist, chair of the first Loudoun County planning commission in 1941
Wilson Pickett (1941–2006) – R&B and soul singer and songwriter
Isaiah L. Potts (1784?–after 1843) – tavern keeper of the notorious Potts Tavern who, allegedly, ran a gang of highwaymen and murderers on the Illinois frontier
Rachel Renee Russell (1959–) – #1 New York Times best-selling author of the children's book series, Dork Diaries
Henry S. Taylor (1942–) – Pulitzer Prize-winning poet
Joshua White (1812–1890) – businessman and Illinois state legislator
Lucien Whiting Powell (1846–1930) – Renowned landscape artist
William Wilson (1794–1857) – Chief Justice of the Supreme Court of Illinois




Sister cities


Loudoun County has eight Sister City/County relationships, and one Friendship City Partnership. Most are also suburbs of their respective capitals.

Canelones, Uruguay (2023)
Gangneung, South Korea (Friendship City, 2014)
Goyang, South Korea (2012)
Greater Noida, India (2023)
Holmes County, Mississippi (2019)
Karsiyaka, Turkey (2013)
Main-Taunus-Kreis, Germany (2006)
New Taipei City, Taiwan (2012)
Tema, Ghana (2023)




See also



Loudoun Water
Loudoun v. Board of Trustees of the Loudoun County Library
National Register of Historic Places listings in Loudoun County, Virginia
List of wineries in Virginia




Explanatory notes






References






External links



Official website
Loudoun County Chamber of Commerce
Travel Information: Loudoun Convention & Visitors Association
History and Comprehensive Description of Loudoun County, Virginia, by James W. Head, 1908 at Project Gutenberg
Loudoun County at the Wayback Machine (archived October 26, 2001)

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