Nine states had union membership rates below 5.0 percent in 2014, with North Carolina having the lowest rate (1.9 percent). The next-lowest rates were in South Carolina (2.2 percent) and Mississippi and Utah (3.7 percent each). Three states had union membership rates over 20.0 percent in 2014: New York (24.6 percent), Alaska (22.8 percent), and Hawaii (21.8 percent).
In 2014, 30 states and the District of Columbia had union membership rates below the U.S. average of 11.1 percent. Nineteen states had rates above the U.S. average, and one state had a rate equal to the U.S. average. All states in the East South Central and West South Central divisions had union membership rates below the national average, and all states in the Middle Atlantic and Pacific divisions had rates above it. Union membership rates declined over the year in 27 states and the District of Columbia, rose in 18 states, and did not change in 5 states.
These data are from the Current Population Survey. To learn more, see "Union Members — 2014" (HTML) (PDF). The union membership rate is the percentage of wage and salary workers who are members of unions. The numbers exclude all self-employed workers.
Bureau of Labor Statistics, U.S. Department of Labor, The Economics Daily, Union membership by state in 2014 at https://www.bls.gov/opub/ted/2015/union-membership-by-state-2014.htm (visited August 19, 2022).