Clubs and organizations
- Sierra Club, Catoctin Group
- Silver Fancy Garden Club
- Silver Run/Union Mills Lions Club
- Silver Sages
- Social Order of the Beauceant
- Sons of the American Legion, Gold Star Squadron #191
- Sons of the American Revolution, Westminster Chapter
- South Carroll Aero Modelers
- South Carroll Lioness-Lions Club
- South Carroll Republican Club
- St. John Wisdom Club
- Super Sixties' Club
- Sykesville and Patapsco Railway
- Sykesville-South Carroll Rotary Club