- Camp Island
- Camp Islands
- Center Barnstead
- Chapman Island
- Cut Island
- Cate Island
- Center Conway
- Center Effingham
- Chases Island
- Chases Mill
- Chicks Corner
- Chickville
- Chip Island
- Church Island
- Clark Landing
- Cooks Crossing
- Cove Island
- Cow Island
- Camp Forest Lake
- Camp Notre Dame
- Catsbane Island
- Chesham
- Christian Hollow
- Cold River
- Converseville
- Curtis Corner
- Cutter Hill
- Cascade
- Cones
- Coos Junction