The 412 million accounts go back 20 years, it says, and the lion's share comes from Adult Friend Finder — almost 340 million.

Another 63 million come from adult webcam site Cams.com, 7 million come from adult magazine Penthouse.com, and over a million apiece from and i

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Fully 43% of adults (87 million people) say they are single. century with a swing towards marriage in the 1950s and 1960s.

These data generally align with findings from a 50,000-household survey conducted by the U. Marriage rates then receded as the ranks of both the widowed and the never-married increased.

It is free to become a member of and search for matches, but to send and receive email and have access to other features, there is a monthly subscriber fee. This site differs from the others because there is no search function.

The table below shows that while the majority of American adults (56% or 113 million people) are not in the dating market (they are married or living as married), the number of potential romance-seekers is still huge.

Online dating has become a popular way to meet singles.

Dating sites give you a chance to virtually “meet” and get to know other singles in your area based on criteria chosen by you.

There are many popular dating websites, including plenty that cater to niche interests; the following sites are the top 10, according to Ask Online Advice.com, and are listed in no particular order.

This site features 20 million singles; because of the high number of users, it also has advanced search criteria, allowing users to search by age, location, keyword and other custom search criteria such appearance, interests, background and values and lifestyle.