| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Igadagix (historical) | city | Alaska | United States | 51.77 | -177.80 | 3 | |
| Igagik | city | Alaska | United States | 58.22 | -157.38 | 98 | |
| Igerna | city | California | United States | 41.40 | -122.38 | 4189 | |
| Igerna | city | New York | United States | 43.72 | -73.92 | 1217 | |
| Igiak (historical) | city | Alaska | United States | 61.62 | -165.93 | 49 | |
| Igiayarok | city | Alaska | United States | 61.72 | -165.30 | 6 | |
| Igiugig | city | Alaska | United States | 59.33 | -155.89 | 104 | |
| Iglehart | city | Maryland | United States | 39.01 | -76.57 | 98 | |
| Iglehart | city | Texas | United States | 30.26 | -97.71 | 830 | |
| Iglesia | city | Puerto Rico | United States | 18.43 | -67.15 | 830 | |
| Iglesia Virgen de la Providencia | city | Puerto Rico | United States | 18.25 | -66.19 | 1797 | |
| Igloo | city | South Dakota | United States | 43.20 | -103.86 | 3772 | |
| Igloo (historical) | city | Alaska | United States | 65.15 | -165.06 | 78 | |
| Igluqpauraq | city | Alaska | United States | 71.30 | -156.77 | 13 | |
| Ignacio | city | Colorado | United States | 37.12 | -107.63 | 6709 | |
| Ignacio | city | California | United States | 38.07 | -122.54 | 91 | |
| Ignacio Perez Colonia | city | Texas | United States | 26.18 | -98.11 | 91 | |
| Igo | city | California | United States | 40.51 | -122.54 | 997 | |
| Igo (historical) | city | Georgia | United States | 34.48 | -84.71 | 830 | |
| Igo (historical) | city | Oregon | United States | 45.25 | -120.28 | 3349 | |
| Igushik | city | Alaska | United States | 58.71 | -158.89 | 32 |