In 2008, single, childless women between 22 and 30 were earning more than their male counterparts in most U.S. cities, with incomes that were 8% greater on average, according to an analysis of Census data by Reach Advisors, a consumer research firm in Slingerlands, N.Y.

The trend was first identified several years ago in the country’s biggest cities, but has broadened out to smaller places and across more industries. Beyond major cities such as San Francisco and New York, the income imbalance is pronounced in blue collar hubs and the fast-growing metros that have large immigrant populations.

The greatest disparity is in Atlanta, where young, childless women made 121% of their male counterparts, according to Reach Advisors. See the ratios for the top 50 metro areas below.