Idaho Cities
- Raft River, ID
- Ramey, ID
- Ramsey, ID
- Rands, ID
- Rankin Mill, ID
- Rathdrum, ID
- Raymond, ID
- Rebecca, ID
- Reclamation Village, ID
- Red River Hot Springs, ID
- Regina, ID
- Renfrew, ID
- Reubens, ID
- Reverse, ID
- Rexburg, ID
- Reynolds, ID
- Richfield, ID
- Riddle, ID
- Ridgedale, ID
- Rigby, ID
- Riggins, ID
- Riggins Hot Springs, ID
- Ririe, ID
- Rising River, ID
- Ritz, ID
- Riverdale, ID
- Riverside, ID
- Roberts, ID
- Robie Creek, ID
- Robin, ID
- Robinson Bar, ID
- Rock Creek, ID
- Rockaway Beach, ID
- Rockford, ID
- Rockford Bay, ID
- Rockland, ID
- Rocky Bar, ID
- Rogerson, ID
- Roland, ID
- Rose, ID
- Rose Lake, ID
- Roseberry, ID
- Roseworth, ID
- Roswell, ID
- Rouse, ID
- Rover, ID
- Roy, ID
- Roy Summit, ID
- Rubicon, ID
- Ruby, ID
- Rudo, ID
- Rupert, ID
