 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.The National Transportation Safety Board operates the Ashburn Aviation Field Office in Ashburn, an unincorporated area of Loudoun County.