- Friday Harbor
- Fairway Estates Senior Mobile Home Park
- Ferry Baker Island
- Fire Trail
- Florence
- Florence Island (historical)
- Fobes Hill
- Forest Glade
- Forest Grove Mobile Home Park
- Fortson
- Fourth Avenue West Estates Mobile Home Park
- Freeway Place Mobile Home Park
- Frontier Manor Mobile Home Park
- Fryelands
- Fairchild
- Base de la Fuerza Aérea Fairchild
- Freedom
- Fairview
- Frontier
- Fir Tree
- Five Corners
- Four Corners
- Flandersville
- Five Points
- Foundation Island
- Fairfield Mobile Home Park
- Ferndale Mobile Village
- Fairbanks
- Fallon
- Flaig