| DC Circulator |
| ART Bus |
| DASH- Alexandria |
| CUE- Fairfax City Bus |
| Fairfax Connector-Fairfax County |
| Loudoun County Commuter Bus |
| Loudoun County Local Bus |
| TransIT- Frederick County |
| Maryland Commuter Bus |
| Omni-Ride |
| TheBus- Prince George's County |
| Ride On- Montgomery County |
| WMATA MetroBus |
| MARC Train |
|
| VRE- Virginia Railway Express |
| Other Rail - no ridership data; Amtrak |
| Other Bus- no ridership data; Richmond Highway Express Bus; West Falls Church Express |
