Movements need sound bites to spread widely. But in reality, the gender wage gap is much more complex than the single-figure “cents on the dollar” stat that is commonly used as shorthand for the problem.

The recently released ” Status of Women in the States: 2015 ,” a project of the  Institute for Women’s Policy Research (IWPR), peels back the layers around the topic, from geography and age to immigration.

If the gap continues to narrow at the current rate, women in the U.S. won’t see equal pay until 2058, the study finds. But that estimate differs widely from region to region: in West Virginia, Utah, Louisiana, North Dakota, and Wyoming, women won’t see equal pay in this century and beyond.