In 21 states, the $7.25 federal minimum wage applies. In 29 states and the District of Columbia, minimum wages range from $8.25 to $16.39.
The shift has been most notable in jobs that prioritize analytical skills, such as science and math, or fundamental skills, such as writing.
There is a growing need for high-skill workers in the U.S., and this has helped to narrow gender disparities in the labor market.
The gender wage gap narrows as women move into high-skill jobs and acquire more education. Women are now in the majority in jobs that draw most heavily on either social or fundamental skills.
Among the changes: Smartphones and social media became the norm, church attendance fell, and same-sex marriage and legalizing marijuana gained support.
Despite parents' shifting responsibilities, the U.S. is the only one of 41 nations that does not mandate any paid leave for new parents.
In EU countries with higher unemployment, people are more pessimistic about job prospects. Youth unemployment and lack of economic growth are also factors.
Three-in-four Republicans give the economy positive ratings, while a majority of Democrats rate it negatively. But within parties, views differ widely by income.
The 30-year low reflects in part tight labor markets and falling unemployment, but also higher shares of young women at work or in school.
Veterans of prime working age generally fare at least as well as non-veterans in the U.S. job market, though there are differences in the work they do.