Union Membership by Education Level for 11-Month and 12-Month Samples, Percent of Employees, 1983–2025

Line chart comparing union membership rates by education using 12-month (solid) and 11-month (dashed) samples from 1983 to 2025. Workers without a bachelor’s degree are red and those with a bachelor’s degree or higher are gray. The two samples align closely over time.

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11-month estimates exclude October data. 12-month estimates are unavailable for 2025.

Chart: Hayley BrownSource: Author's analysis of Current Population Survey Outgoing Rotation Group, 1983–2025. Get the dataEmbed Download image