F
- Fairplay
- Fairview
- Fairview
- Fairview
- Falcon
- Falfa
- Fall Creek
- Fall River Estates Subdivision
- Farisita
- Farmers
- Far View Annex
- Fayette
- Fearnowville
- Federal Heights
- Fenders
- Ferncliff
- Ferndale
- Fir
- Firestone
- Firstview
- Flagler
- Fleming
- Florence
- Floresta
- Florida
- Florissant
- Fondis
- Ford
- Forest Hills
- Fort Big Spring
- Fort Boettcher
- Fort Carson
- Fort Collins
- Fort Garland
- Fort Lupton
- Fort Lyon
- Fort Morgan
- Fort Reynolds
- Fosston
- Fountain
- Four Corners
- Four Corners Crossing
- Fowler
- Fox Creek
- Foxfield
- Foxton
- Franktown
- Fraser
- Frederick
- Freeland
- Frick
- Friendship Ranch
- Frisco
- Frost
- Fruita
- Fruitvale
- Ft. Morgan
- Fulford
- Futurity