- Salem (Population: 28,112)
- Salisbury (Population: 1,137)
- Sanbornton (Population: 2,581)
- Sandown (Population: 5,143)
- Sandwich (Population: 1,286)
- Seabrook (Population: 7,934)
- Somersworth (Population: 11,477)
- South Hooksett (Population: 5,282)
- Stewartstown (Population: 1,012)
- Strafford (Population: 3,626)
- Stratham (Population: 6,355)
- Sunapee (Population: 3,055)
- Suncook (Population: 5,362)
- Sutton (Population: 1,544)
- Swanzey (Population: 6,800)
