| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Iohl | city | Federated States of Micronesia | United States | 6.94 | 158.14 | 75 | |
| Ioka | city | Utah | United States | 40.26 | -110.11 | 5400 | |
| Ioka (historical) | city | Iowa | United States | 41.18 | -92.13 | 839 | |
| Iola | city | Florida | United States | 30.15 | -85.17 | 19 | |
| Iola | city | Illinois | United States | 38.83 | -88.63 | 830 | |
| Iola | city | Kansas | United States | 37.92 | -95.40 | 954 | |
| Iola | city | Kentucky | United States | 36.90 | -88.41 | 370 | |
| Iola | city | Pennsylvania | United States | 41.14 | -76.53 | 830 | |
| Iola | city | Texas | United States | 30.77 | -96.07 | 347 | |
| Iola | city | Wisconsin | United States | 44.51 | -89.13 | 948 | |
| Iola (historical) | city | Colorado | United States | 38.47 | -107.10 | 7598 | |
| Iola (historical) | city | Iowa | United States | 41.33 | -95.38 | 1249 | |
| Ioland (historical) | city | Oklahoma | United States | 35.94 | -99.52 | 1912 | |
| Iolanthe (historical) | city | Texas | United States | 32.05 | -101.02 | 2509 | |
| Iolee (historical) | city | Florida | United States | 30.27 | -85.13 | 42 | |
| Ion | city | Iowa | United States | 43.11 | -91.26 | 859 | |
| Iona | city | Florida | United States | 26.52 | -81.96 | 3 | |
| Iona | city | Idaho | United States | 43.53 | -111.93 | 5029 | |
| Iona | city | Indiana | United States | 38.55 | -87.47 | 830 | |
| Iona | city | Minnesota | United States | 43.92 | -95.78 | 1669 | |
| Iona | city | New Jersey | United States | 39.60 | -75.07 | 95 | |
| Iona | city | Oklahoma | United States | 34.62 | -97.03 | 1059 | |
| Iona | city | Pennsylvania | United States | 40.32 | -76.37 | 830 | |
| Iona | city | South Dakota | United States | 43.54 | -99.42 | 1850 | |
| Iona | city | Texas | United States | 32.68 | -97.55 | 1000 | |
| Iona City (historical) | city | Missouri | United States | 40.57 | -94.54 | 1079 | |
| Ione | city | Arkansas | United States | 35.06 | -94.05 | 830 | |
| Ione | city | Georgia | United States | 31.01 | -83.73 | 278 | |
| Ione | city | Nevada | United States | 38.95 | -117.59 | 6778 | |
| Ione | city | Oregon | United States | 45.50 | -119.82 | 1669 | |
| Ione | city | Washington | United States | 48.74 | -117.42 | 1998 | |
| Ione | city | California | United States | 38.35 | -120.93 | 377 | |
| Ionia | city | Arkansas | United States | 36.33 | -94.51 | 1249 | |
| Ionia | city | Iowa | United States | 43.03 | -92.46 | 1145 | |
| Ionia | city | Kansas | United States | 39.66 | -98.35 | 1669 | |
| Ionia | city | Michigan | United States | 42.99 | -85.07 | 830 | |
| Ionia | city | Missouri | United States | 38.50 | -93.32 | 977 | |
| Ionia | city | New York | United States | 43.10 | -76.38 | 830 | |
| Ionia | city | New York | United States | 42.93 | -77.49 | 902 | |
| Ionia (historical) | city | Nebraska | United States | 42.67 | -96.78 | 1128 | |
| Iosepa (historical) | city | Utah | United States | 40.54 | -112.74 | 4435 | |
| Iosephopolis | city | California | United States | 37.34 | -121.89 | 82 | |
| Iota | city | Louisiana | United States | 30.33 | -92.50 | 26 | |
| Iotla | city | North Carolina | United States | 35.24 | -83.40 | 2030 | |
| Iotla (historical) | city | North Carolina | United States | 35.23 | -83.40 | 2001 | |
| Iowa | city | Louisiana | United States | 30.24 | -93.01 | 22 | |
| Iowa | city | Pennsylvania | United States | 41.12 | -79.01 | 1669 | |
| Iowa Center | city | Iowa | United States | 41.93 | -93.41 | 902 | |
| Iowa City | city | California | United States | 39.29 | -121.48 | 196 | |
| Iowa City | city | Florida | United States | 28.69 | -81.15 | 22 | |
| Iowa City | city | Iowa | United States | 41.66 | -91.53 | 830 | |
| Iowa Colony | city | Texas | United States | 29.48 | -95.42 | 52 | |
| Iowa Falls | city | Iowa | United States | 42.52 | -93.25 | 1112 | |
| Iowa Falls Junction | city | Iowa | United States | 42.52 | -93.26 | 1099 | |
| Iowa Hill | city | California | United States | 39.11 | -120.86 | 2598 | |
| Iowa Junction | city | Illinois | United States | 40.69 | -91.06 | 830 | |
| Iowa Junction (historical) | city | Iowa | United States | 41.49 | -91.54 | 830 | |
| Iowa Park | city | Texas | United States | 33.95 | -98.67 | 1017 | |
| Iowa Point | city | Kansas | United States | 39.93 | -95.24 | 994 | |
| Iowa Trailer Park | city | Florida | United States | 29.24 | -81.04 | 3 |