We recently stumbled across a vintage list of the ten most sexually active American cities assembled by Quality Health.
Turns out Denver is very high among communities experiencing a happy ending, if you know what we mean.
And we're pretty sure you do.
Where did Denver finish? Look below to see the photo-illustrated roster, featuring Quality Health text.
Cambridge, Massachusetts This academic hub, which houses both Harvard and M.I.T., is also the city with the most relationship savvy: 58 percent of its romantic Amazon.com purchases are books about relationships. Cambridge's lower-than-average birth rates kept it from earning a top spot on our list, but it's interesting to note that in 1991 Massachusetts became the first location to institute a statewide condom availability program in its high schools.
Cincinnati, Ohio Known for its scenic, small-town charm, Cincinnati, not Las Vegas, may be the real "sin city." Although its birth rates have been declining for decades, residents of the Midwestern metropolis buy contraceptives at a 70 percent higher rate than the rest of the country; when it comes to sales at Pure Romance, Cincinnati ranks third.
Alexandria, Virginia/Salt Lake City, Utah (tie) As it turns out, Virginia really is for lovers, with Alexandria leading the nation in romantic purchases at Amazon.com, including books about relationships. Meanwhile, Salt Lake City boasts the country's third highest birth rates per capita, with contraceptive sales that are 107 percent higher than those of most American locales.
Washington, D.C. Sex and politics may make dangerous bedfellows, but that's not prompting Washington politicos to embrace abstinence. Contraceptive sales are a whopping 189 percent higher in the nation's capital than the rest of the country, and when it comes to sales at Babeland, the city ranks fifth.
Seattle, Washington The birthplace of grunge, Microsoft, and Starbucks has more than loud music, high-tech gadgets, and espresso to offer. In fact, the Emerald City's contraceptive sales per capita are 127 percent higher than those of the rest of the country. In addition, the city ranks second when it comes to sales at Babeland, a women-friendly erotica shop.
Boise, Idaho The most populous city in the Gem State, Boise boasts a 25-mile riverfront greenbelt as well as a high quality of life. What's more, it's a hotbed for sex, boasting the country's second-highest birth rates per capita (interestingly, the city also ranks tenth when it comes to condom sales).
San Antonio, Texas The second-largest city in the Lone Star state, San Antonio is known as a multicultural Mecca filled with historic landmarks-and apparently, fornication. The Alamo City's contraceptive sales per capita are as high as Portland's, and when it comes to condom sales in particular, San Antonio is the U.S.'s second-leading location. What's more, according to the CDC, Texas boasts the nation's second-highest birth rates (17.1 percent).
Ann Arbor, Michigan Home of the prestigious University of Michigan, this quintessential college town was hailed as the sexiest city in America by Amazon.com. Why? According to the online bookseller, which calculated the types of books they sell to cities across the country, books about sex account for 24 percent of Ann Arbor's residents' romantic purchases.
Portland, Oregon Microbreweries, rose gardens, and coffeehouses aren't the only thing Portland residents have to smile about. This Pacific Northwestern town's contraceptive sales per capita are 127 percent higher than those of most U.S. locales. Plus, the city ranks sixth in sales at Pure Romance, a company that offers an exclusive line of products for "relationship enhancement."
Denver, Colorado Visitors flock to the mile-high city for its breathtaking natural beauty. But the gateway to the Rockies may offer something more: copious amounts of sex. In addition to impressive birth rates per capita, contraceptive sales are 189 percent higher within the city limits than the national average (sales of female contraceptives are a whopping 278 percent higher).
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More from our Lists & Weirdness archive: "Photos: Most and least obese states -- and Colorado's slip from number one."