The 2009 CIA World Factbook

by United States. Central Intelligence Agency

Gaza Strip
slightly more than twice the size of Washington, DC

Georgia
slightly smaller than South Carolina

Germany
slightly smaller than Montana

Ghana
slightly smaller than Oregon

Gibraltar
slightly less than one-half the size of Rhode Island

Greece
slightly smaller than Alabama

Greenland
slightly more than three times the size of Texas

Grenada
twice the size of Washington, DC

Guam
three times the size of Washington, DC

Guatemala
slightly smaller than Tennessee