R
| Name of place | Number of counties | Principal county | Lower zip code | Upper zip code |
|---|---|---|---|---|
| Raft River | 1 | Cassia County | 83211 | |
| Ramey | 1 | Payette County | ||
| Ramsdell | 1 | Benewah County | 83851 | |
| Ramsey | 1 | Kootenai County | ||
| Rands | 1 | Camas County | ||
| Rankin Mill | 1 | Adams County | ||
| Rathdrum | 1 | Kootenai County | 83858 | |
| Rawson | 1 | Lincoln County | ||
| Raymond | 1 | Bear Lake County | 83238 | |
| Rebecca | 1 | Washington County | ||
| Reclamation Village | 1 | Elmore County | ||
| Redfish Lake | 1 | Custer County | 83278 | |
| Red River Hot Springs | 1 | Idaho County | 83525 | |
| Red Rock Junction | 1 | Bannock County | ||
| Regina | 1 | Ada County | ||
| Renfrew | 1 | Benewah County | ||
| Reno | 1 | Clark County | 83423 | |
| Reubens | 1 | Lewis County | 83548 | |
| Reverse | 1 | Elmore County | ||
| Revling | 1 | Clearwater County | ||
| Rexburg | 1 | Madison County | 83440 | |
| Reynolds | 1 | Owyhee County | 83650 | |
| Richfield | 1 | Lincoln County | 83349 | |
| Riddle | 1 | Owyhee County | 83604 | |
| Ridgedale | 1 | Oneida County | ||
| Rigby | 1 | Jefferson County | 83442 | |
| Riggins | 1 | Idaho County | 83549 | |
| Riggins Hot Springs | 1 | Idaho County | ||
| Ririe | 2 | Bonneville County | 83443 | |
| Ririe | 2 | Jefferson County | 83443 | |
| Rising River | 1 | Bingham County | ||
| Ritz | 1 | Boundary County | ||
| Riverdale | 1 | Benewah County | 83861 | |
| Riverdale | 1 | Franklin County | 83263 | |
| Riverside | 1 | Bingham County | 83221 | |
| Riverside | 1 | Canyon County | 83605 | |
| Riverside | 1 | Clearwater County | 83544 | |
| Roberts | 1 | Jefferson County | 83444 | |
| Robin | 1 | Bannock County | 83214 | |
| Robinson Bar | 1 | Custer County | ||
| Rockaway Beach | 1 | Kootenai County | 83835 | |
| Rock Creek | 1 | Twin Falls County | 83334 | |
| Rockford | 1 | Bingham County | 83221 | |
| Rockford Bay | 1 | Kootenai County | 83814 | |
| Rock Island | 1 | Washington County | ||
| Rockland | 1 | Power County | 83271 | |
| Rocky Bar | 1 | Elmore County | 83647 | |
| Rocky Point | 1 | Benewah County | 83851 | |
| Rogerson | 1 | Twin Falls County | 83302 | |
| Roland | 1 | Shoshone County | ||
| Rookstool Corner | 1 | Canyon County | ||
| Rooney | 1 | Clearwater County | ||
| Rose | 1 | Bingham County | 83221 | |
| Rose | 1 | Caribou County | ||
| Roseberry | 1 | Valley County | 83615 | |
| Rose Lake | 1 | Kootenai County | 83810 | |
| Roseworth | 1 | Twin Falls County | 83321 | |
| Roswell | 1 | Canyon County | 83660 | |
| Rouse | 1 | Bingham County | ||
| Rover | 1 | Benewah County | ||
| Roy | 1 | Power County | 83271 | |
| Roy Summit | 1 | Oneida County | ||
| Rubicon | 1 | Adams County | ||
| Ruby | 1 | Cassia County | ||
| Rudo | 1 | Clearwater County | ||
| Rupert | 1 | Minidoka County | 83350 | |
| Ryan Spur | 1 | Benewah County |
Read more about this topic: List Of Places In Idaho: L-Z