|Length & Breadth
Longest east-west: 198.6 miles-Fairfax Stone to Delaware Line.
Longest north-south: 125.5 miles-Pennsylvania line to Virginia line at Smith Point on south shore mouth of Potomac River.
Shortest north-south: 1.9 miles-Pennsylvania line to south bank of Potomac River near Hancock.
Farthest points: northwest corner to southeast corner at Atlantic Ocean, 254.7 miles.
|Land||9,843.62 sq. miles|
|Inland Water||623.35 sq. miles|
|Chesapeake Bay||1,726.0 sq. miles|
|Total||12,192.97 sq. miles|