Fifty years ago, nearly a third of U.S. workers belonged to a union. Today, it's one in 10. But the decline has not been the same for every state. Here is a map showing how union membership has changed across the country.
A few notes on the map:
- In 1964, the Midwest was full of manufacturing jobs and had the highest concentration of union workers in America. That has changed dramatically — both because the share of jobs in manufacturing has fallen, and because fewer of the manufacturing jobs that remain are held by union workers.