| City | Region |
|---|
| ›Iago | Texas› |
| ›Idabel | Oklahoma› |
| ›Idaho Falls | Idaho› |
| ›Igiugig | Alaska› |
| ›Ikatan | Alaska› |
| ›Ilnik | Alaska› |
| ›Ilwaco | Washington› |
| ›Immokalee | Florida› |
| ›Imperial | California› |
| ›Imperial Beach | California› |
| ›Independence | Kentucky› |
| ›Independence | California› |
| ›Independence | Kansas› |
| ›Independence | Missouri› |
| ›Independence | Iowa› |
| ›Independent Hill | Virginia› |
| ›India Hook | South Carolina› |
| ›Indian Lake | New York› |
| ›Indian Trail | North Carolina› |
| ›Indiana | Pennsylvania› |
| ›Indianapolis | Indiana› |
| ›Indianola | Texas› |
| ›Indianola | Mississippi› |
| ›Indianola | Iowa› |
| ›Indiantown | Florida› |
| ›Indio | California› |
| ›Ingeramiut | Alaska› |
| ›Inglewood | California› |
| ›Ingraham | New York› |
| ›Ingram | Texas› |
| ›Inner Belt | Massachusetts› |
| ›Interlaken | California› |
| ›İnternatinal Airport | California› |
| ›Inverness | Florida› |
| ›Inwood | New York› |
| ›Inwood | West Virginia› |
| ›Iola | Kansas› |
| ›Ione | California› |
| ›Iowa City | Iowa› |
| ›Iowa Colony | Texas› |
| ›Iowa Falls | Iowa› |
| ›Ipswich | Massachusetts› |
| ›Irmo | South Carolina› |
| ›Iron Mointain | Michigan› |
| ›Iron River | Michigan› |
| ›Irona | New York› |
| ›Irondequoit | New York› |
| ›Ironton | New York› |
| ›Ironville | Ohio› |
| ›Ironwood | Michigan› |
| ›Irvine | California› |
| ›Irving | Texas› |
| ›Irving | New York› |
| ›Isabel | South Dakota› |
| ›Isabel Segunda (Vieques Island) | Puerto Rico› |
| ›Isabella | Minnesota› |
| ›Ischua | New York› |
| ›Isla Vista | California› |
| ›Islamorada | Florida› |
| ›Island Park | New York› |
| ›Islandia | New York› |
| ›Isle la Motte | Vermont› |
| ›Isleta Village Proper | New Mexico› |
| ›Islington | Massachusetts› |
| ›Islip | New York› |
| ›Issaquah | Washington› |
| ›Italy | Texas› |
| ›Ithaca | New York› |
| ›Itulilik | Alaska› |
| ›Ivanhoe | California› |
