Flag of the Chesapeake Bay Flag Association
There are several states that are a part of the the Chesapeake Bay. The two states maine with Chesapeake Bay bay front property are Virginia and Maryland.
The District of Columbia does not have bay front access but is a part of the tidewater region.
Finally there are the outer states that simply have rivers that flow into the Chesapeake Bay. Flowing from the North is the mighty Susquehanna River. Thus Pennsylvania and New York a part of the Chesapeake Bay water shed. From the West is Delaware. Finally from heart of Appalachia, the Chesapeake is connected to West Virginia.
That is a total of six states and the District of Columbia.
You can visit the Chesapeake Bay Flag Association,