- Country Club Estates
- Country Life Acres
- Cabin John
- Calverton
- Camp Springs
- Calebs Delight
- Cambridge Estates
- Campus Heights
- Candice Estates
- Candlewick
- Canterbury
- Cape Hill Farms
- Cape Horn South
- Carmae Acres
- Carriage Hills
- Carroll County Trails
- Carroll Dale
- Carroll Heights
- Carroll Highlands
- Carroll Park
- Carroll Square
- Carroll View
- Carroll Winde
- Carroll Woods Estates
- Carrollton
- Carrolltowne
- Carrollyn Manor
- Cascade Estates
- Castle Oaks
- Castles Rising