Quad Cities
The name "Quad Cities" can be confusing because "quad" means four. People began calling the area the Quad Cities in the 1960s, before Bettendorf was large enough to be considered a "city". By the time Bettendorf was large enough, people were so used to the name "Quad Cities" that they decided to keep it. (Even earlier, the area had been called the "Tri-Cities", before East Moline became large enough to be considered a city.)