R
- Rabbitville
- Racine
- Racket
- Racola
- Radbird
- Rader
- Radical
- Rail
- Randles
- Randolph
- Randolph Springs
- Raney
- Ranger
- Rat
- Ravanna
- Ravenwood
- Rayborn
- Raymondville
- Raymore
- Raytown
- Rayville
- Rea
- Reactor
- Reading
- Readsville
- Red Bank
- Red Bridge
- Redford
- Redings Mill
- Redman
- Redmondville
- Red Oak
- Red Point
- Red Top
- Reeds
- Reeds Spring
- Reform
- Regal
- Reger
- Renfro
- Renick
- Rennsboro
- Rensselaer
- Republic
- Rescue
- Revere
- Revisville
- Rex
- Reynolds
- Rhineland
- Rhyse
- Rices Corner
- Richards
- Richardson
- Rich Fountain
- Rich Hill
- Richland
- Richmond
- Richmond Heights
- Richville
- Richville
- Richwoods
- Ridgedale
- Ridgely
- Ridge Prairie
- Ridgeway
- Ridgley
- Riggs
- Rileysburg
- Rimby
- Rinehart
- Ringo Point
- Rippee
- Risco
- Ristine
- Ritchey
- Ritter
- River Aux Vases
- River Bend
- Rivermines
- Riverpark
- Riverside
- Riverside
- Riverton
- Riverview
- Riverview
- Rives
- Roach
- Roads
- Roanoke
- Robbins
- Robertson
- Robertsville
- Robidoux
- Roblee
- Roby
- Rocheport
- Rochester
- Rockaway Beach
- Rockbridge
- Rock Creek
- Rockford
- Rock Hill
- Rockingham
- Rock Levee
- Rockport
- Rock Springs
- Rockview
- Rockville
- Rocky Comfort
- Rocky Mount
- Rocky Ridge
- Rogersville
- Rolla
- Romance
- Rombauer
- Rome
- Rondo
- Rookins
- Roosevelt
- Roosterville
- Rosati
- Roscoe
- Roseberry
- Rosebud
- Rose Hill
- Roseland
- Roselle
- Rosendale
- Roseville
- Rosewood
- Ross Bridge
- Rossville
- Rothville
- Roubidoux
- Round Grove
- Round Spring
- Rousertown
- Rover
- Rowena
- Rowland
- Roy
- Royal
- Royal Oak
- Ruble
- Rucker
- Rucker
- Rueter
- Rum Branch
- Rush Hill
- Rushs Ridge
- Rush Tower
- Rushville
- Russ
- Russellville
- Rutledge
- Ryder
- Ryors