The Bridgeport, Conn., metropolitan area led the nation last year in active use of Ashley Madison, the matchmaking website for extramarital affairs, with 6.23 subscriptions and $1,127 spent for every 1,000 men between the ages of 18 and 79, according to research at The University of Toledo.

Graduate student researchers used customer data exposed by anonymous hackers last year to analyze the geography and market characteristics of active users.

The research titled “Infidelity and the Internet: The Geography of Ashley Madison Usership in the Unites States” was recently published in the journal Geographical Review.

The common characteristics identified of cheating husbands are financially well-off, younger, not retired and less religious.

Michael Chohaney, a PhD student studying spatially-integrated social science at UT, and Kimberly Panozzo, who recently graduated with a master’s degree in the Department of Geography and Planning, conducted the research.

“This is the only academic geography article we know of that collects, processes and analyzes publicly available data originally stolen and released by Internet hackers,” Chohaney said. “Due to ethics concerns, we handled the Ashley Madison user account information with the utmost respect for personal security and privacy. No individual user identities or locations can be derived from our work.”

Although the scandalous data dump included seven million subscribers in the U.S., this research analyzed the accounts and narrowed it down to 702,309 active profiles. Researchers eliminated inactive users, such as people who visited the site once for free out of curiosity to view other members’ profiles. Unusable billing addresses and duplicate profiles paid for by a single credit card account also were removed.

“Women were not required to pay, so only heterosexual men are included in our sample,” Chohaney said. “We focus on users who put their money where their mouse is in order to measure and better understand the characteristics of those vulnerable to cheating.”

The top three areas with Ashley Madison subscription rates are Bridgeport, Conn.; Boulder, Colo.; and Jacksonville, N.C. The markets with the top spending rates are Bridgeport, Conn.; Washington, D.C.; and Boston, Mass.

“Income is the leading market determinant for Internet-facilitated infidelity,” Chohaney said. “The service of allowing people to pay to engage in an extramarital affair behaves as a luxury good, which means people with disposable incomes are willing to pay for a service that facilitates extramarital affairs and promises anonymity during the process. It makes sense; Bridgeport is wealthy.”

Chohaney said metropolitan statistical areas with the highest rates also housed large numbers of armed forces personnel and families with children headed by male breadwinners.

At the local level, spatial distribution of user and spending rates are most highly clustered in the Atlanta and Chicago areas. The most active suburbs and neighborhoods of Atlanta were Buckhead and Roswell. The most active suburbs and neighborhoods of Chicago were Lincoln Park and Aurora.

The research finds that locations with higher proportions of Asians and older married men were less likely to subscribe or spend money on Ashley Madison than locations with large proportions of African-Americans, Hispanics and younger married men. Further, the research found Ashley Madison subscription rates drop 18 percent and spending rates drop 13 percent for every additional religious congregation per 1,000 people.

“That indicates religiosity prevents individuals from using the Internet to cheat on their spouse,” Chohaney said.

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