Today is women’s equality day in America, which celebrates the success of suffragettes in securing votes for women in 1920. But equality at the ballot box is not matched by parity in pay. Women in New York earn 87.6 cents for every dollar earned by a man—the nation’s smallest gap. Those in Louisiana make just 66.7 cents—the nation’s largest. On average, female workers take home only about 78% of what male ones do: they wind up in poorly-paid service professions more often; are less likely to work in better-paid areas requiring technical degrees; and take more time off to care for children. Balancing the school run with working hours is particularly difficult for America’s 9.6m single mothers, who were twice as likely to be unemployed as their married counterparts in 2013. Some women, it seems, have more opportunity to be equal than others.