- Sadler Crescent
- Sandy Road
- Scugog Line 2
- Scugog Line 3
- Scugog Line 4
- Scugog Line 6
- Scugog Line 8
- Scugog Street
- Seven Mile Island Road
- Sexton Street
- Shanly Street
- Sherrington Drive
- Shirley Road
- Silver Street
- Simcoe Street
- Smith Side Road
- South Garden Court
- Spring Boulevard
- Steinway Drive
- Stephenson Point Road
- Stone Sound
- Strattonville Crescent
- Sumac Lane