Center for Labor Education & Research
University of Hawai‘i - West O‘ahu

91-1000 Farrington Highway, Kapolei, HI 96707
(808) 689-2760 - FAX (808) 689-2761

Union Density in the U.S.: 2005

          Union Members     Represented by Unions  
State total K percent total K percent
New York 2,090 26.1 2,201 27.5
Hawai'i 141 25.8 145 26.7
Alaska 63 22.8 66 24.1
Michigan 880 20.5 916 21.4
New Jersey 791 20.5 838 21.7
Washington 523 19.1 559 20.4
Illinois 927 16.9 965 17.6
California 2,424 16.5 2,610 17.8
Wisconsin 410 16.1 438 17.2
Ohio 804 16.0 866 17.2
Rhode Island 79 15.9 83 16.8
Connecticut 247 15.9 263 17.0
Minnesota 392 15.7 410 16.4
Oregon 213 14.5 231 15.7
West Virginia 99 14.4 107 15.5
Massachusetts 402 13.9 431 14.9
Pennsylvania 753 13.8 818 15.0
Nevada* 145 13.8 158 15.1
Maryland 337 13.3 379 15.0
U.S. Average   15,700    12.5    
Indiana 346 12.4 368 13.2
Maine 69 11.9 79 13.6
Delaware 46 11.8 50 12.9
Missouri 290 11.5 319 12.6
Iowa* 157 11.5 185 13.5
District of Columbia 29 11.3 33 12.8
Vermont 31 10.8 37 13.0
Montana 42 10.7 48 12.2
New Hampshire 65 10.4 72 11.5
Alabama* 195 10.2 223 11.7
Kentucky 164 9.7 184 10.8
Nebraska* 69 8.3 79 9.5
Colorado 170 8.3 193 9.4
New Mexico 63 8.1 83 10.7
Wyoming* 18 7.9 22 9.5
North Dakota* 21 7.3 26 9.2
Mississippi* 77 7.1 105 9.7
Kansas* 85 7.0 115 9.5
Louisiana* 114 6.4 132 7.4
Arizona* 145 6.1 181 7.7
South Dakota* 21 5.9 29 8.2
Tennessee* 128 5.4 156 6.6
Oklahoma* 77 5.4 91 6.4
Florida* 401 5.4 532 7.2
Texas* 506 5.3 590 6.2
Idaho* 31 5.2 38 6.3
Georgia* 190 5.0 226 6.0
Utah* 51 4.9 63 6.1
Arkansas* 54 4.8 68 6.0
Virginia* 135 4.8 211 6.2
North Carolina* 107 2.9 143 3.9
South Carolina* 40 2.3 58 3.3

* Right-to-Work States

  Previous year estimates as posted:  


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