Maryland Cities
- Rabbit Town, MD
- Radiant Valley, MD
- Ralph, MD
- Ralston, MD
- Ramona Beach, MD
- Randalia, MD
- Randallstown, MD
- Randle Cliff Beach, MD
- Randolph Hills, MD
- Randolph Village, MD
- Rawlings, MD
- Raynor Heights, MD
- Rayville, MD
- Reckford, MD
- Red Point, MD
- Redgate, MD
- Redhill, MD
- Redhouse, MD
- Redland, MD
- Reels Mill, MD
- Reese, MD
- Regency Estates, MD
- Rehobeth, MD
- Reid, MD
- Reids Grove, MD
- Reisterstown, MD
- Relay, MD
- Reliance, MD
- Remington Farms, MD
- Rest Haven, MD
- Revell, MD
- Rewastico, MD
- Reynolds, MD
- Rhodes Point, MD
- Rhodesdale, MD
- Richards Oak, MD
- Richardsmere, MD
- Riderwood, MD
- Riderwood Hills, MD
- Ridge, MD
- Ridge Grove, MD
- Ridgeleigh, MD
- Ridgely, MD
- Ridgeway, MD
- Ringgold, MD
- Rio Vista, MD
- Ripley, MD
- Rising Sun, MD
- Rison, MD
- Ritchie, MD
- Riva, MD
- River Club Estates, MD
- River Ridge Estates, MD
- River Springs, MD
- Riverdale, MD
- Riverdale Gardens, MD
- Riverdale Heights, MD
- Riverdale Hills, MD
- Riverdale Park, MD
- Riverside, MD
- Riverton, MD
- Riverview, MD
- Riviera Beach, MD
- Robbins, MD
- Roberts, MD
- Robindale, MD
- Robinson, MD
- Robinwood, MD
- Rock Creek Forest, MD
- Rock Creek Gardens, MD
- Rock Creek Hills, MD
- Rock Creek Knolls, MD
- Rock Creek Palisades, MD
- Rock Creek Village, MD
- Rock Hall, MD
- Rock Hill Beach, MD
- Rock Point, MD
- Rock Run, MD
- Rock Springs, MD
- Rockaway Beach, MD
- Rockdale, MD
- Rockland, MD
- Rockview Beach, MD
- Rockville, MD
- Rockwell, MD
- Rocky Brook Park, MD
- Rocky Forge, MD
- Rocky Gorge Estates, MD
- Rocky Hook, MD
- Rocky Ridge, MD
- Rocky Springs, MD
- Rodgers Forge, MD
- Rogers Heights, MD
- Rogers Mill, MD
- Rohrersville, MD
- Roller, MD
- Rolling Acres, MD
- Rolling View, MD
- Rollingwood, MD
- Rolphs, MD
- Romancoke, MD
- Romancoke on the Bay, MD
- Roop Mill, MD
- Rosaryville, MD
- Rose Haven, MD
- Rose Hill Estates, MD
- Rosedale, MD
- Rosedale Park, MD
- Rosemary Hills, MD
- Rosemont, MD
- Rossmoor, MD
- Rossville, MD
- Round Bay, MD
- Rowlandsville, MD
- Roxbury Mills, MD
- Royal Beach, MD
- Royal Oak, MD
- Rugby Hall, MD
- Ruhl, MD
- Rush, MD
- Rushville, MD
- Ruthsburg, MD
- Rutledge, MD
- Ruxton, MD
- Ryceville, MD
