word | | Area - comparative |
| Jersey | New Caledonia | slightly smaller than New Jersey |
| Jersey | Slovenia | slightly smaller than New Jersey |
| Jersey | Swaziland | slightly smaller than New Jersey |
| Jersey | Switzerland | slightly less than twice the size of New Jersey |
| Johnston | United States Pacific Island Wildlife Refuges | ... in Washington, DC Jarvis Island: about eight times the size of The Mall in Washington, DC Johnston Atoll: about four and a half times the size of The Mall in Washington, DC ... |
| Juan | French Southern and Antarctic Lands | ... DC Glorioso Islands (Iles Eparses): about eight times the size of The Mall in Washington, DC Juan de Nova Island (Iles Eparses): about seven times the size of The Mall in Washington ... |
| Kansas | Belarus | slightly smaller than Kansas |
| Kansas | Oman | slightly smaller than Kansas |
| Kentucky | Iceland | slightly smaller than Kentucky |
| Kerguelen | French Southern and Antarctic Lands | ... of The Mall in Washington, DC Iles Crozet: about twice the size of Washington, DC Iles Kerguelen: slightly larger than Delaware Bassas da India (Iles Eparses): land area about one-third the ... |
| Kingman | United States Pacific Island Wildlife Refuges | ... Johnston Atoll: about four and a half times the size of The Mall in Washington, DC Kingman Reef: a little more than one and a half times the size of The Mall ... |
| land | British Indian Ocean Territory | land area is about 0.3 times the size of Washington, DC |
| land | French Southern and Antarctic Lands | ... the size of Washington, DC Iles Kerguelen: slightly larger than Delaware Bassas da India (Iles Eparses): land area about one-third the size of The Mall in Washington, DC Europa Island (Iles ... |