Area Factbook

{| style="width:100%; border-spacing:8px; margin:0px;" cellpadding="8"


 * style="width:50%; border:1px solid #cedff2; vertical-align:top" |


 * Area-specific facts
 * International:Country
 * Canada
 * Mexico
 * China
 * State
 * State: Delaware
 * State: District of Columbia
 * Education
 * History
 * Media
 * Transportation & Infrastructure
 * State: Maryland
 * Economics
 * Government & Politics
 * Health & medicine
 * History
 * Military bases
 * National Guard: Maryland
 * Telecommunications
 * Transportation & Infrastructure
 * State: Pennsylvania
 * Transportation & Infrastructure
 * State: Virginia
 * Government & Politics
 * Cities & towns
 * Cities & towns: Maryland
 * Cities & towns: Pennsylvania
 * Cities & towns: Virginia
 * Counties
 * Counties: Maryland
 * Counties: Virginia


 * Demographic data (general)
 * Economics (general)
 * Geographical data
 * Government & politics (general)
 * Statistic & census data
 * Transportation & infrastructure (general)