About the Office

Tim Hemstreet has served as County Administrator of Loudoun County, Virginia since December 2009. As the top administrator of one of the fastest-growing counties in the United States, Hemstreet directs and supervises the day-to-day operations of all county departments and agencies under the direct control of the elected Board of Supervisors. 

Hemstreet also serves as Clerk of the Board. The Office of the County Administrator provides administrative support to the Board of Supervisors and implements its directives with regard to Board agendas, meetings, resolutions, and constituent services.

Additionally, the county administrator serves as the Board of Supervisors' official liaison to the constitutional officers, the judiciary, and state and regional agencies. The county administrator also serves as the county's chief emergency management official.

County Administration Senior Staff

  1. Photo of Deputy County Administrator Charles Yudd

    Charles Yudd

    Deputy County Administrator
    Charles Yudd is in charge of strategic initiatives and special projects. He serves as liaison to Elections and Voter Registration and Library Services as well as the Treasurer’s Office and the Office of the Commissioner of the Revenue. He also has purview over Public Affairs and Communications as well as the county’s legislative program.

  1. Photo of Assistant County Administrator Erin McLellan

    Erin McLellan

    Assistant County Administrator

  1. Photo of Assistant County Administrator John Sandy

    John Sandy

    Assistant County Administrator
    John Sandy oversees the Departments of Fire & Rescue, Community Corrections, Animal Services. He also serves as the liaison to the Sheriff's Office, Clerk of the Circuit Court, Commonwealth's Attorney and Circuit & District Courts




  1. Photo of Monica Spells

    Monica Spells

    Assistant County Administrator
    Monica Spells oversees human services agencies, including the Departments of Family Services and Mental Health, Substance Abuse and Developmental Services. She serves as the liaison to the Health Department, Juvenile Court Service Unit and Juvenile and Domestic Relations Court and the Virginia Cooperative Extension - Loudoun Office.

  1. Photo of Assistant County Administrator Valmarie Turner

    Valmarie Turner

    Assistant County Administrator
    Valmarie Turner oversees the community development agencies, including the Departments of Building and Development, Planning and Zoning, Economic Development and the Office of Housing.

Chief of Staff

Legislative Liaison

  1. Photo of David Street1

    David Street

    Chief of Staff

    David Street serves as the liaison to the Board of Supervisors’ offices, supervising the Clerks Division within the Office of the County Administrator and serving as the point of contact for the Board’s agenda management process for the Board’s business meetings, committee meetings, public hearings and special meetings. 


  1. Photo of Gwen Kennedy

    Gwen Kennedy

    Legislative Liaison

    Gwen Kennedy serves as the county's legislative liaison, helping to develop the county's legislative program on the state and federal level.


Division Heads

  1. Photo of Public Affairs and Communications Officer Glen Barbour

    Glen Barbour

    Public Affairs and Communications Officer
    Glen Barbour oversees the Public Affairs and Communications Division of County Administration.

  1. Sarah Etro

    Sarah Coyle Etro

    Housing Coordinator

    Sarah Coyle Etro oversees the Office of Housing of County Administration


  1. Photo of Emergency Management Coordinator Kevin Johnson

    Kevin Johnson

    Coordinator of Emergency Management
    Kevin Johnson oversees the Office of Emergency Management within the Office of the County Administrator.

  1. Photo of Carl Rush

    Carl Rush

    Chief Equity Officer

    Carl Rush is the Chief Equity Officer for Loudoun County. He is overseeing the development, design, coordination and implementation of programs, policies and practices aimed at making the county organization and community more equitable.