The Maryland Baltimore Mission includes six stakes: Annapolis MD, Baltimore MD, Columbia MD, Frederick MD, Winchester VA, and Martinsburg WVA. It extends south just past Annapolis, west into West Virginia and Virginia, north generally along the MD/PA state line, and east to the Chesapeake Bay. It covers some, but not all of the Pan Handle, and doesn't include the southernmost region of Maryland.

Thanks to Elder Dickens for sending me this map of the Mission.