Clifton is an incorporated town located in southwestern Fairfax County, Virginia, United States, with a population of 282 . The land around Clifton is far less built up than nearby areas, especially to its east and southwest. This was out of the worry that overdevelopment near Bull Run and the Occoquan River would be environmentally damaging to the Occoquan Reservoir. The next time you need flower delivery in Clifton,VA, think of Rose Florist. We have something for everyone's floral needs.