| Region Name | Agency Name/Owner |
|---|
| City of Fairfax | Board and Commissions |
| | City Clerk |
| | City Government |
| | City Offices |
| | City Services |
| | Commissioner of the Revenue |
| | Community Development and Planning |
| | Community Relations |
| | Courts |
| | Cue Bus |
| | Department of Information Technology |
| | Economic Development |
| | Exploring the City |
| | Finance |
| | Fire and Rescue |
| | Historic Resources |
| | Human Services |
| | Library |
| | Mayor and City Council |
| | Not Assigned |
| | Not Used1 |
| | Not Used2 |
| | Parks and Recreation |
| | Personnel |
| | Police |
| | Public Works |
| | Real Estate |
| | Registrar |
| | Schools |
| | Treasurer |
| | Utilities |
| Fairfax County | Administration for Human Services |
| | Agency on Aging, Fairfax Area |
| | Animal Shelter |
| | Board of Supervisors |
| | Board of Supervisors - Braddock District |
| | Board of Supervisors - Chariman |
| | Board of Supervisors - Clerk |
| | Board of Supervisors - Dranesville District |
| | Board of Supervisors - Hunter Mill District |
| | Board of Supervisors - Lee District |
| | Board of Supervisors - Mason District |
| | Board of Supervisors - Mount Vernon District |
| | Board of Supervisors - Providence District |
| | Board of Supervisors - Springfield District |
| | Board of Supervisors - Sully District |
| | Cable Communications and Consumer Protection |
| | Celebrate Fairfax |
| | Children, Office for (Childcare Central) |
| | Circuit Court |
| | Community and Recreation Services |
| | Community Services Board, Fairfax - Falls Church |
| | County Executive |
| | Economic Development Authority |
| | Electoral Board and General Registrar |
| | Emergency Management, Office of |
| | Equity Programs, Office of |
| | Facilities Management Department |
| | Fairfax Area Disability Services Board |
| | Fairfax County Public Schools |
| | Fairfax Falls Church Community Service Board |
| | Family Services |
| | Finance |
| | Financial and Program Auditor, Office of |
| | Fire and Rescue Department |
| | General District Court |
| | Health Department |
| | HIPAA |
| | Housing and Community Development |
| | Human Resources |
| | Human Rights Commission |
| | Human Services |
| | Information Technology |
| | Internal Audit Office |
| | Juvenile and Domestic Relations District Court |
| | Library, Fairfax County Public |
| | Management and Budget |
| | Northern Virginia Soil & Water Conservation District |
| | Office of Commonwealth's Attorney |
| | Park Authority |
| | Partnerships, Office of |
| | Planning and Zoning |
| | Planning Commission |
| | Police Department |
| | Public Affairs, Office of |
| | Public Safety Communications, Dept. of |
| | Public Works and Environmental Services |
| | Purchasing and Supply Management |
| | Retirement Administration Agency |
| | Sheriff, Office of |
| | Systems Management for Human Services |
| | Tax Administration |
| | Transportation |
| | Vehicle Services |
| | Women, Office of |
| | Zoning Appeals, Board of |
| Regional | Commonwealth of Virginia |
| | Commuter Connection (COG) |
| | FEMA |
| | Gateway Virginia |
| | George Mason University |
| | Inova Health System |
| | MetroAccess |
| | Miss Utility |
| | National Park Service, Department of Interior |
| | National Weather Service |
| | Nature Conservancy |
| | Northern Va. Regional Park Authority (NVRPA) |
| | Northern Virginia Community College |
| | Northern Virginia Regional Commission |
| | Other Regional Transit Services |
| | Recreation.gov |
| | Redcross |
| | Smithsonian |
| | Summer Camps.com |
| | UDDA Forest Service |
| | VA Department of Motor Vehicles |
| | Virginia Department of Transportation |
| | Virginia Railway Express |
| | Washington Baltimore Area Golfers |
| | Woodalls |
| Town of Herndon | Administration |
| | Cemetery |
| | Community Development |
| | Fairfax County Water Authority (FCWA) |
| | Finance |
| | Golf Course |
| | Human Resources |
| | Neighborhood Resources |
| | Parks and Recreations |
| | Police |
| | Public Works |
| | Town Attorney |
| | Town Clerk |
| | Town Council |
| Town of Vienna | Administrative Services |
| | Department of Information Technology |
| | Finance |
| | Park and Recreation |
| | Planning and Zoning |
| | Police |
| | Public Information |
| | Public Information Officer |
| | Public Works |
| | Town Clerk |
| Town of Warrenton | Animal Care |
| | Business |
| | Community & Transportation |
| | Department of Information Technology |
| | Department of Public Works |
| | Department of Social Services |
| | Dept. of Planning & Community Development |
| | Economic Development |
| | Education |
| | ESS |
| | Exploring the Town |
| | Finance & Human Resources |
| | General Information |
| | Health Care |
| | Important Phone Numbers |
| | Library |
| | Motor Vehicles |
| | Parks & Recreation |
| | Planning Commission |
| | Police Department |
| | Public Utilities |
| | Recreation |
| | Sports and Activity |
| | Town Council |
| | Town Information |
| | Town Manager |
| | Voter |
