- Smelter City
- Smelter Town
- Smoke Signal
- Smurr
- Snaketown
- Snowflake
- So-Hi
- Soldier Camp
- Solomon
- Sombrero Butte
- Somerton
- Sonoita
- Sonora
- Sonora Town
- South Bisbee
- South Cove
- South Fort
- South Komelik
- South Mountain Trailer Park
- South Phoenix
- South Santan
- South Tucson
- Southern Acres Mobile Home Park
- Southern Foothills Mobile Home Park
- Southern Palms Trailer Park
- Southgate Mobile Home Park
- Sponseller
- Spring Valley
- Springerville
- Sprucedale