The credit score, once a little-known metric derived from a complex formula that incorporates outstanding debt and payment histories, has become an increasingly important number used to bestow credit, determine housing and even distinguish between job candidates.

It’s so widely used that it has also become a bigger factor in dating decisions, sometimes eclipsing more traditional priorities like a good job, shared interests and physical chemistry. That’s according to interviews with more than 50 daters across the country, all under the age of 40.

“Credit scores are like the dating equivalent of a sexually transmitted disease test,” said Manisha Thakor, the founder and chief executive of MoneyZen Wealth Management, a financial advisory firm. “It’s a shorthand way to get a sense of someone’s financial past the same way an S.T.D. test gives some information about a person’s sexual past.”

It’s difficult to quantify how many daters factor credit scores into their romantic calculations, but financial planners, marriage counselors and dating site executives all said that they were hearing far more concerns about credit than in the past. “I’m getting twice as many questions about credit scores as I did prerecession,” Ms. Thakor said.

Executives who run online financial advice forums say that topics about credit and dating receive hundreds of responses within minutes of being posted. Alexa von Tobel, founder and chief executive of Learnvest.com, a financial planning firm, said that members are more interested in credit scores than ever before.