When it comes to equal pay, the American woman is stuck in a proverbial waiting room. But the number on her ticket, the length of her stay, largely depends on where she lives and to whom she was born.

A new report from the  Institute for Women’s Policy Research , released this week, predicts U.S. women won’t reach pay parity with men until 2058. And the wait could be much longer for those in Wyoming and Louisiana, for example, where women on average make less money than female peers in other states.