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.: 2004

  Union Members Represented by Unions
State total K percent total K percent

(click here for 2003 estimates by comparison)
(click here for 2002 estimates by comparison)
(click here for 2001 estimates by comparison)

New York 1,996 25.3 2,085 26.4
Hawai'i 126 23.7 132 24.8
Michigan 930 21.6 966 22.4
Alaska 54 20.1 60 22.4
New Jersey 745 19.8 813 21.6
Washington 510 19.3 536 20.3
Minnesota 424 17.5 443 18.3
Illinois 908 16.8 971 17.9
California 2,385 16.5 2,588 18.0
Rhode Island 79 16.3 83 17.0
Wisconsin 414 16.0 439 16.9
Connecticut 235 15.3 256 16.6
Oregon 224 15.2 243 16.5
Ohio 759 15.2 820 16.4
Pennsylvania 793 15.0 842 15.9
West Virginia 99 14.2 110 15.7
Massachusetts 393 13.5 430 14.7
District of Columbia 33 12.7 38 14.5
Nevada* 126 12.5 144 14.3
U.S. Average 15,500 12.5    
Missouri 315 12.4 357 14.0
Delaware 46 12.4 49 13.2
Montana 43 11.7 46 12.6
Indiana 311 11.4 338 12.4
Maine 64 11.3 74 13.2
Maryland 272 10.9 313 12.5
Iowa* 141 10.5 171 12.7
New Hampshire 61 9.9 68 11.0
Vermont 29 9.8 33 11.4
Kentucky 164 9.6 197 11.6
Alabama* 181 9.7 213 11.5
Kansas* 103 8.4 132 10.8
Colorado 172 8.4 191 9.3
Nebraska* 69 8.3 83 10.0
Wyoming* 18 8.0 22 9.8
North Dakota* 22 7.7 26 9.0
Louisiana* 129 7.6 157 9.3
New Mexico 49 6.7 65 8.9
Tennessee* 164 6.7 191 7.7
Idaho* 33 5.8 44 7.9
Georgia* 242 6.4 282 7.5
Arizona* 145 6.3 183 7.9
Oklahoma* 86 6.1 100 7.1
Florida* 414 6.0 533 7.7
South Dakota* 21 6.0 27 7.7
Utah* 58 5.8 67 6.7
Virginia* 176 5.3 218 6.6
Texas* 457 5.0 573 6.3
Mississippi* 53 4.8 70 6.3
Arkansas* 51 4.8 65 6.2
South Carolina* 54 3.0 74 4.2
North Carolina* 97 2.7 127 3.6

* Right-to-Work States


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