In colloquial usage, "Fraser Valley" usually refers only to that part of the valley beyond the continuously built-up urban area around Vancouver, up to and including Chilliwack and Agassiz, about 80 km east, and abutting the border with Washington's Whatcom County; news media typically also include the built-up eastern suburban areas of Vancouver which a few decades ago were mixed farmland and forest, typical of "the Valley". Fraser Valley can also refer to the Fraser Valley Regional District, which consists of the municipalities and incorporated areas in the eastern two-thirds of the valley.

The term "Central Fraser Valley" refers to Mission and Abbotsford and is included within the Lower Fraser Valley. The Upper Fraser Valley means from Chilliwack and Agassiz to Hope. The phrases "Fraser Valley towns" and "Fraser River municipalities" include Delta and Richmond, though the colloquial "in the Valley" means from Surrey and Coquitlam eastwards.