According to the County's 2011 Comprehensive Annual Financial Report,[28] the top employers in the county are:
# Employer # of Employees
1 Loudoun County Public Schools 10,098
2 County of Loudoun 3,303
3 M.C. Dean, Inc. 1,000–5,000
4 Verizon Business 1,000–5,000
5 U.S. Department of Homeland Security 1,000–5,000
6 Orbital ATK 1,000–5,000
7 United Airlines 1,000–5,000
8 AOL 1,000–5,000
9 Loudoun Hospital Center 1,000–5,000
10 United States Postal Service 1,000–5,000
As of the census of 2010,[34] there were 312,311 people, 104,583 households, and 80,494 families residing in the county. The population density was 606 people 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
7.3% African American
14.7% Asian
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% Salvadorian, 1.8% Mexican, 1.3% Peruvian, 0.9% Puerto Rican, 0.6% Honduran, 0.6% Bolivian, 0.5% Guatemalan, 0.5% Colombian)