In 147 out of 150 of the biggest cities in the U.S., the median full-time salaries of young women are 8% higher than those of the guys in their peer group

See Gender pay gap observation by Tyler Cowen.

"…according to a new analysis of 2,000 communities by a market research company, in 147 out of 150 of the biggest cities in the U.S., the median full-time salaries of young women are 8% higher than those of the guys in their peer group. In two cities, Atlanta and Memphis, those women are making about 20% more. This squares with earlier research from Queens College, New York, that had suggested that this was happening in major metropolises. But the new study suggests that the gap is bigger than previously thought, with young women in New York City, Los Angeles and San Diego making 17%, 12% and 15% more than their male peers, respectively. And it also holds true even in reasonably small areas like the Raleigh-Durham region and Charlotte in North Carolina (both 14% more), and Jacksonville, Fla. (6%).

The figures come from James Chung of Reach Advisors, who has spent more than a year analyzing data from the Census Bureau’s American Community Survey. He attributes the earnings reversal overwhelmingly to one factor: education. For every two guys who graduate from college or get a higher degree, three women do. This is almost the exact opposite of the graduation ratio that existed when the baby boomers entered college. Studies have consistently shown that a college degree pays off in much higher wages over a lifetime, and even in many cases for entry-level positions. “These women haven’t just caught up with the guys,” says Chung. “In many cities, they’re clocking them.”
Chung also claims that, as far as women’s pay is concerned, not all cities are created equal. Having pulled data on 2,000 communities and cross-referenced the demographic information with the wage-gap figures, he found that the cities where women earned more than men had at least one of three characteristics. Some, like New York City or Los Angeles, had primary local industries that were knowledge-based. Others were manufacturing towns whose industries had shrunk, especially smaller ones like Erie, Pa., or Terre Haute, Ind. Still others, like Miami or Monroe, La., had a majority minority population. (Hispanic and black women are twice as likely to graduate from college as their male peers.)

That is not the final word, but here is more from Time magazine."