Jamaica
slightly smaller than Connecticut
Jan Mayen
slightly more than twice the size of Washington, DC
Japan
slightly smaller than California
Jersey
about two-thirds the size of Washington, DC
Jordan
slightly smaller than Indiana
Kazakhstan
slightly less than four times the size of Texas
Kenya
slightly more than twice the size of Nevada
Kiribati
four times the size of Washington, DC
Korea, North
slightly smaller than Mississippi
Korea, South
slightly larger than Indiana