The most sexually active city in the United States may surprise you, and here's a hint, it's definitely not New York or Las Vegas - these popular and bustling cities didn't even come close to the top spot. According to a study by Quality Health, which ranked the 10 most sexually active cities in the country, Denver is the most sexually active.

The study said that Denver was the scene of "copious amounts of sex" and saw contraceptive sales up to 189 percent higher than the rest of the country.

Denver also had high birth rates, and the sale of female contraceptives were 278 percent higher than the rest of the nation, according to CBS Denver.

Next on the list was Portland, Ore., followed by Ann Arbor, Mich., at number three. Next up were San Antonio, Texas; Boise, Idaho; Seattle; Washington, D.C.; a tie between Alexandria, Va., and Salt Lake City; and Cincinnati, with Cambridge, Mass., rounding out the list at number 10.

But there are also places that left much to be desired in terms of sexual activity when compared to the rest of the nation.

The study found Jacksonville, Fla., to be the least sexually active city in the U.S., according to 9News. The city produced low birth rates and sluggish sales for contraceptives.