Who'da thunk it? Nearby Denver, Colorado is officially America's Most Lustful City, according to ACNielsen, who rated cities based on over the counter sales of contraceptives. The Mile High City apparently has lots of people joining the Mile High Club, as sales of birth control is 189% of what would be expected for its market size.
Other cities that are near the top of the list? San Antonio, Washington, Cleveland, and Salt Lake City.