Stacked area chart showing the number of union members by race and ethnicity from 1989 to 2025. Red represents white workers, blue represents Black workers, navy represents Hispanic/Latino workers, and light teal represents Asian/Pacific Islander workers. The number of white union members declines substantially over time, while the number of Hispanic/Latino and Asian/Pacific Islander union members increases steadily. Black union membership remains relatively stable, though it dips slightly in 2025. Overall, the racial and ethnic composition of union membership has become more diverse over time, even as total membership declined.