India
slightly more than one-third the size of the US

Indian Ocean
about 5.5 times the size of the US

Indonesia
slightly less than three times the size of Texas

Iran
slightly smaller than Alaska

Iraq
slightly more than twice the size of Idaho

Ireland
slightly larger than West Virginia

Isle of Man
slightly more than three times the size of Washington, DC

Israel
slightly smaller than New Jersey

Italy
slightly larger than Arizona

Jamaica
slightly smaller than Connecticut