| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Taber | city | Idaho | United States | 43.31806 | -112.68806 | 4707 | 215 |
| Tahoe | city | Idaho | United States | 46.09639 | -115.80611 | 3300 | 14 |
| Talache | city | Idaho | United States | 48.14083 | -116.48417 | 2378 | 1011 |
| Talache Landing | city | Idaho | United States | 48.12861 | -116.47778 | 2060 | 1011 |
| Talmage | city | Idaho | United States | 42.67889 | -111.78667 | 5587 | 293 |
| Tamarack | city | Idaho | United States | 44.95528 | -116.38472 | 4199 | 138 |
| Tammany | city | Idaho | United States | 47.43333 | -115.65083 | 4015 | 90 |
| Taney historical | city | Idaho | United States | 46.59944 | -116.54278 | 2627 | 357 |
| Taplin | city | Idaho | United States | 46.15222 | -116.93028 | 1079 | 476 |
| Taylor | city | Idaho | United States | 45.68556 | -116.3825 | 3402 | 301 |
| Taylorville | city | Idaho | United States | 43.38278 | -112.03583 | 4747 | 4629 |
| Teakean | city | Idaho | United States | 46.55111 | -116.37972 | 2998 | 966 |
| Telegraph Hill | city | Idaho | United States | 43.01556 | -116.74667 | 6988 | 19 |
| Telluride | city | Idaho | United States | 42.53667 | -111.77917 | 5167 | 299 |
| Tendoy | city | Idaho | United States | 44.95944 | -113.64389 | 4898 | 137 |
| Tenmile Summer Home Area | city | Idaho | United States | 43.89722 | -115.71306 | 4799 | 144 |
| Tensed | city | Idaho | United States | 47.16 | -116.92083 | 2598 | 369 |
| Terreton | city | Idaho | United States | 43.84167 | -112.43556 | 4786 | 187 |
| Teton | city | Idaho | United States | 43.88667 | -111.67694 | 4954 | 2516 |
| Tetonia | city | Idaho | United States | 43.81917 | -111.16194 | 6181 | 453 |
| Thama | city | Idaho | United States | 48.15333 | -116.84667 | 2060 | 858 |
| Thatcher | city | Idaho | United States | 42.40889 | -111.72611 | 4950 | 419 |
| The Cedars | city | Idaho | United States | 46.87278 | -115.07611 | 3838 | 61 |
| The String | city | Idaho | United States | 43.58472 | -111.08778 | 6397 | 444 |
| Thiard | city | Idaho | United States | 47.61556 | -115.90417 | 2998 | 126 |
| Thomas | city | Idaho | United States | 43.18278 | -112.50389 | 4458 | 2031 |
| Thorenson | city | Idaho | United States | 42.08333 | -111.99167 | 4796 | 478 |
| Thornton | city | Idaho | United States | 43.75833 | -111.84444 | 4855 | 5954 |
| Three Creek | city | Idaho | United States | 42.07139 | -115.15861 | 5597 | 19 |
| Threemile Corner | city | Idaho | United States | 48.73139 | -116.29861 | 2263 | 422 |
| Threemile Crossing | city | Idaho | United States | 42.24778 | -114.86389 | 5196 | 28 |
| Tiegs Corner | city | Idaho | United States | 43.51389 | -116.51306 | 2582 | 18684 |
| Tikura | city | Idaho | United States | 43.21472 | -114.01194 | 4652 | 106 |
| Tindall historical | city | Idaho | United States | 42.26611 | -115.88111 | 5203 | 19 |
| Tipperary Corner | city | Idaho | United States | 42.57889 | -114.29556 | 3933 | 2459 |
| Tipton historical | city | Idaho | United States | 42.28056 | -113.15972 | 4996 | 70 |
| Topaz historical | city | Idaho | United States | 42.62722 | -112.08472 | 4947 | 321 |
| Torreys | city | Idaho | United States | 44.25361 | -114.60139 | 6968 | 14 |
| Trailton historical | city | Idaho | United States | 43.13 | -111.91111 | 5600 | 337 |
| Tramway | city | Idaho | United States | 46.28472 | -116.10694 | 1220 | 1569 |
| Transfer | city | Idaho | United States | 46.42917 | -117.02944 | 767 | 21255 |
| Travers | city | Idaho | United States | 42.60917 | -113.73611 | 4166 | 7808 |
| Treasureton | city | Idaho | United States | 42.26528 | -111.84556 | 4993 | 449 |
| Trestle Creek | city | Idaho | United States | 48.28333 | -116.34972 | 2106 | 784 |
| Triangle | city | Idaho | United States | 42.78389 | -116.62444 | 5200 | 19 |
| Triumph | city | Idaho | United States | 43.645 | -114.25333 | 6886 | 971 |
| Trout | city | Idaho | United States | 42.3225 | -113.90028 | 4425 | 112 |
| Troy | city | Idaho | United States | 46.73694 | -116.76861 | 2641 | 371 |
| Trude | city | Idaho | United States | 44.46111 | -111.34528 | 6338 | 19 |
| Tunupa | city | Idaho | United States | 42.955 | -114.57833 | 3743 | 206 |
| Turner | city | Idaho | United States | 45.45639 | -115.93694 | 3067 | 43 |
| Turner | city | Idaho | United States | 42.57667 | -111.81806 | 5465 | 299 |
| Turnpike | city | Idaho | United States | 42.11 | -111.26278 | 5921 | 316 |
| Tuttle | city | Idaho | United States | 42.85833 | -114.83917 | 3310 | 1061 |
| Twin Beaches | city | Idaho | United States | 47.62 | -116.79722 | 2129 | 2463 |
| Twin Falls | city | Idaho | United States | 42.56306 | -114.46 | 3697 | 28878 |
| Twin Forks | city | Idaho | United States | 43.73194 | -111.19306 | 5984 | 453 |
| Twin Groves | city | Idaho | United States | 43.97444 | -111.62694 | 5003 | 2162 |
| Twin Springs | city | Idaho | United States | 43.66944 | -115.70028 | 3418 | 110 |
| Twinlow | city | Idaho | United States | 47.87722 | -116.85528 | 2358 | 1676 |
| Two Forks | city | Idaho | United States | 43.71306 | -111.17639 | 5990 | 453 |
| Tyhee | city | Idaho | United States | 42.95167 | -112.46556 | 4547 | 27811 |
| Tyson Creek Station | city | Idaho | United States | 47.13389 | -116.41333 | 2798 | 523 |
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