| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Raft River | city | Idaho | United States | 42.59722 | -113.23528 | 4268 | 139 |
| Ramey | city | Idaho | United States | 44.00278 | -116.93694 | 2306 | 11002 |
| Ramsdell | city | Idaho | United States | 47.35278 | -116.67556 | 2398 | 332 |
| Ramsey | city | Idaho | United States | 47.86444 | -116.80722 | 2306 | 1595 |
| Rands | city | Idaho | United States | 43.34444 | -114.65167 | 4999 | 33 |
| Rankin Mill | city | Idaho | United States | 45.26639 | -116.54472 | 6735 | 75 |
| Rathdrum | city | Idaho | United States | 47.8125 | -116.89556 | 2201 | 3379 |
| Raymond | city | Idaho | United States | 42.27472 | -111.05806 | 6138 | 227 |
| Rea | city | Idaho | United States | 44.46972 | -111.43444 | 6410 | 19 |
| Rebecca | city | Idaho | United States | 44.24083 | -116.85694 | 2198 | 1208 |
| Reclamation Village | city | Idaho | United States | 43.33556 | -115.48778 | 4291 | 174 |
| Red River Hot Springs | city | Idaho | United States | 45.78778 | -115.19917 | 5193 | 14 |
| Red Rock Junction | city | Idaho | United States | 42.35444 | -112.04917 | 4786 | 322 |
| Regina | city | Idaho | United States | 43.39028 | -115.99111 | 3398 | 480 |
| Renfrew | city | Idaho | United States | 47.14417 | -116.4375 | 2798 | 523 |
| Reubens | city | Idaho | United States | 46.32222 | -116.54167 | 3536 | 308 |
| Reverse | city | Idaho | United States | 43.02583 | -115.60583 | 3087 | 938 |
| Rexburg | city | Idaho | United States | 43.82611 | -111.78889 | 4885 | 13278 |
| Reynolds | city | Idaho | United States | 43.20139 | -116.74333 | 4022 | 19 |
| Richfield | city | Idaho | United States | 43.04861 | -114.15472 | 4304 | 131 |
| Rickard Crossing | city | Idaho | United States | 42.25889 | -116.68167 | 4675 | 19 |
| Riddle | city | Idaho | United States | 42.18694 | -116.10944 | 5423 | 19 |
| Ridgedale | city | Idaho | United States | 42.02306 | -112.47917 | 5157 | 104 |
| Rigby | city | Idaho | United States | 43.6725 | -111.91417 | 4839 | 5428 |
| Riggins | city | Idaho | United States | 45.42222 | -116.31444 | 1998 | 47 |
| Riggins Hot Springs | city | Idaho | United States | 45.41694 | -116.17083 | 3041 | 47 |
| Ririe | city | Idaho | United States | 43.63194 | -111.77278 | 4983 | 2808 |
| Rising River | city | Idaho | United States | 43.32389 | -112.33083 | 4599 | 2109 |
| Ritz | city | Idaho | United States | 48.77889 | -116.36861 | 1998 | 436 |
| Riverdale | city | Idaho | United States | 47.32972 | -116.55472 | 2181 | 465 |
| Riverdale | city | Idaho | United States | 42.16139 | -111.83694 | 4790 | 635 |
| Riverside | city | Idaho | United States | 43.50194 | -116.76583 | 2368 | 1797 |
| Riverside | city | Idaho | United States | 46.49556 | -116.29639 | 1722 | 1868 |
| Riverside | city | Idaho | United States | 43.19694 | -112.43444 | 4471 | 4449 |
| Riverside historical | city | Idaho | United States | 48.17889 | -116.75556 | 2116 | 835 |
| Roberts | city | Idaho | United States | 43.72028 | -112.12556 | 4780 | 333 |
| Robin | city | Idaho | United States | 42.57722 | -112.24583 | 4803 | 322 |
| Robinson Bar | city | Idaho | United States | 44.24694 | -114.67611 | 6282 | 14 |
| Rock Creek | city | Idaho | United States | 42.43222 | -114.30472 | 4133 | 1615 |
| Rock House Place | city | Idaho | United States | 42.17278 | -114.78056 | 5255 | 33 |
| Rockaway Beach | city | Idaho | United States | 47.78861 | -116.69889 | 2237 | 3698 |
| Rockford | city | Idaho | United States | 43.18972 | -112.53389 | 4468 | 2031 |
| Rockford Bay | city | Idaho | United States | 47.50528 | -116.8775 | 2217 | 847 |
| Rockland | city | Idaho | United States | 42.57333 | -112.87639 | 4714 | 98 |
| Rockville | city | Idaho | United States | 43.34278 | -117.00028 | 4005 | 12 |
| Rocky Bar | city | Idaho | United States | 43.68917 | -115.28917 | 5400 | 61 |
| Rocky Point | city | Idaho | United States | 47.35583 | -116.74528 | 2178 | 344 |
| Rogerson | city | Idaho | United States | 42.21806 | -114.59333 | 4954 | 56 |
| Roland | city | Idaho | United States | 47.38 | -115.66806 | 4553 | 55 |
| Rookstool Corner | city | Idaho | United States | 43.77833 | -116.8525 | 2378 | 3096 |
| Rose | city | Idaho | United States | 43.25444 | -112.32528 | 4514 | 5730 |
| Rose | city | Idaho | United States | 42.60361 | -111.53694 | 5997 | 150 |
| Rose Lake | city | Idaho | United States | 47.53889 | -116.47083 | 2201 | 252 |
| Roseberry | city | Idaho | United States | 44.73083 | -116.04889 | 4881 | 235 |
| Roseworth | city | Idaho | United States | 42.36694 | -114.92139 | 4675 | 28 |
| Roswell | city | Idaho | United States | 43.74917 | -116.96083 | 2273 | 2416 |
| Rothas | city | Idaho | United States | 43.8875 | -113.53556 | 5764 | 56 |
| Rouse | city | Idaho | United States | 43.22667 | -112.47833 | 4498 | 1612 |
| Rover | city | Idaho | United States | 47.20333 | -116.57528 | 2896 | 523 |
| Roy | city | Idaho | United States | 42.36389 | -112.83028 | 5121 | 107 |
| Roy Summit | city | Idaho | United States | 42.3175 | -112.80139 | 5442 | 125 |
| Rubicon | city | Idaho | United States | 44.98222 | -116.36778 | 4199 | 140 |
| Ruby | city | Idaho | United States | 42.50389 | -113.82194 | 4199 | 10667 |
| Rudo | city | Idaho | United States | 46.48917 | -116.01139 | 2572 | 61 |
| Rudy | city | Idaho | United States | 43.65667 | -111.8325 | 4917 | 3516 |
| Rupert | city | Idaho | United States | 42.61917 | -113.67639 | 4146 | 7751 |
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