| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Waha | city | Idaho | United States | 46.21 | -116.85 | 3513 | |
| Walker | city | Idaho | United States | 43.77 | -111.71 | 5282 | |
| Wallace | city | Idaho | United States | 47.47 | -115.93 | 2801 | |
| Walters Ferry | city | Idaho | United States | 43.34 | -116.60 | 2509 | |
| Wapello | city | Idaho | United States | 43.25 | -112.26 | 4527 | |
| Wapi | city | Idaho | United States | 42.72 | -113.18 | 4396 | |
| Wardboro | city | Idaho | United States | 42.26 | -111.28 | 5954 | |
| Wardner | city | Idaho | United States | 47.52 | -116.13 | 3349 | |
| Warm Lake | city | Idaho | United States | 44.65 | -115.67 | 5354 | |
| Warm River | city | Idaho | United States | 44.11 | -111.32 | 5410 | |
| Warren | city | Idaho | United States | 45.26 | -115.68 | 5997 | |
| Warrens | city | Idaho | United States | 43.33 | -116.54 | 2509 | |
| Washington Mill | city | Idaho | United States | 43.89 | -115.76 | 5200 | |
| Washoe | city | Idaho | United States | 44.05 | -116.95 | 2509 | |
| Wayan | city | Idaho | United States | 42.98 | -111.38 | 6709 | |
| Wayland | city | Idaho | United States | 47.17 | -116.47 | 2798 | |
| Webb | city | Idaho | United States | 47.49 | -115.89 | 3349 | |
| Webb | city | Idaho | United States | 46.34 | -116.83 | 1669 | |
| Weippe | city | Idaho | United States | 46.38 | -115.94 | 3349 | |
| Weiser | city | Idaho | United States | 44.25 | -116.97 | 2509 | |
| Weitz | city | Idaho | United States | 43.67 | -116.76 | 2509 | |
| Wendell | city | Idaho | United States | 42.78 | -114.70 | 3398 | |
| Westlake | city | Idaho | United States | 46.12 | -116.51 | 4189 | |
| Westma | city | Idaho | United States | 43.42 | -116.54 | 2693 | |
| Westmond | city | Idaho | United States | 48.14 | -116.60 | 2509 | |
| Weston | city | Idaho | United States | 42.04 | -111.98 | 5029 | |
| Whipsaw Saddle | city | Idaho | United States | 45.79 | -116.35 | 2788 | |
| White Bird | city | Idaho | United States | 45.76 | -116.30 | 2509 | |
| White Knob (historical) | city | Idaho | United States | 43.89 | -113.67 | 7611 | |
| Whitney | city | Idaho | United States | 42.07 | -111.84 | 4593 | |
| Wickahoney | city | Idaho | United States | 42.46 | -115.98 | 5200 | |
| Wilder | city | Idaho | United States | 43.68 | -116.91 | 2509 | |
| Wildhorse | city | Idaho | United States | 44.86 | -116.83 | 2509 | |
| Wilford | city | Idaho | United States | 43.91 | -111.68 | 5029 | |
| Willard | city | Idaho | United States | 47.24 | -117.04 | 2598 | |
| Williams Creek Summit Home Area | city | Idaho | United States | 44.16 | -116.12 | 3704 | |
| Williams Lake Resort | city | Idaho | United States | 45.01 | -113.97 | 6062 | |
| Williamsburg (historical) | city | Idaho | United States | 42.95 | -111.26 | 6797 | |
| Willola | city | Idaho | United States | 46.50 | -116.57 | 1210 | |
| Wilson | city | Idaho | United States | 43.36 | -116.65 | 2509 | |
| Winchester | city | Idaho | United States | 46.24 | -116.62 | 4189 | |
| Winder | city | Idaho | United States | 42.18 | -111.92 | 5029 | |
| Winona | city | Idaho | United States | 46.13 | -116.11 | 2916 | |
| Winsper | city | Idaho | United States | 44.13 | -112.52 | 5029 | |
| Wolf Lodge | city | Idaho | United States | 47.64 | -116.62 | 2509 | |
| Wolverine | city | Idaho | United States | 43.28 | -111.94 | 6131 | |
| Wood | city | Idaho | United States | 44.13 | -116.91 | 2509 | |
| Woodland | city | Idaho | United States | 46.31 | -116.07 | 3349 | |
| Woodland | city | Idaho | United States | 44.93 | -116.38 | 4199 | |
| Woodland Park | city | Idaho | United States | 47.49 | -115.90 | 3599 | |
| Woodruff | city | Idaho | United States | 42.04 | -112.21 | 4514 | |
| Woods Crossing | city | Idaho | United States | 43.77 | -111.63 | 5396 | |
| Woodside | city | Idaho | United States | 46.21 | -116.62 | 4215 | |
| Woodside (historical) | city | Idaho | United States | 46.27 | -116.60 | 4189 | |
| Woodville | city | Idaho | United States | 43.42 | -112.14 | 5029 | |
| Wooleys | city | Idaho | United States | 42.45 | -111.39 | 5938 | |
| Worley | city | Idaho | United States | 47.40 | -116.92 | 2703 | |
| Wrencoe | city | Idaho | United States | 48.23 | -116.70 | 2060 | |
| Wright (historical) | city | Idaho | United States | 47.98 | -116.73 | 2509 |