Union Membership Historical Table for Iowa

Union affiliation of employed wage and salary workers, Iowa, annual averages, 1989–2018 (numbers in thousands)
Year Total
employed
Members of unions (1) Represented by unions (2)
Total Percent of
employed
Total Percent of
employed

1989

1,198 182 15.2 228 19.0

1990

1,149 177 15.4 230 20.0

1991

1,156 158 13.7 201 17.4

1992

1,239 166 13.4 205 16.5

1993

1,272 163 12.8 195 15.3

1994

1995

1,260 152 12.1 192 15.2

1996

1,293 169 13.0 203 15.7

1997

1,304 172 13.2 205 15.7

1998

1,333 166 12.5 197 14.8

1999

1,334 184 13.8 209 15.7

2000

1,341 177 13.2 211 15.7

2001

1,358 177 13.0 210 15.4

2002

1,389 154 11.1 190 13.7

2003

1,365 157 11.5 196 14.4

2004

1,345 141 10.5 171 12.7

2005

1,369 157 11.5 185 13.5

2006

1,424 161 11.3 199 14.0

2007

1,417 149 10.5 185 13.1

2008

1,437 153 10.6 187 13.0

2009

1,398 156 11.1 185 13.3

2010

1,393 158 11.4 192 13.8

2011

1,386 155 11.2 187 13.5

2012

1,390 145 10.4 172 12.4

2013

1,421 143 10.1 171 12.0

2014

1,459 156 10.7 184 12.6

2015

1,435 138 9.6 174 12.2

2016

1,454 129 8.9 153 10.5

2017

1,475 104 7.0 127 8.6

2018

1,461 113 7.7 129 8.8

Footnotes:
(1) Data refer to members of a labor union or an employee association similar to a union.
(2) Data refer to both union members and workers who report no union affiliation but whose jobs are covered by a union or an employee association contract.

Note: Data refer to the sole or principal job of full- and part-time wage and salary workers. All self-employed workers are excluded, both those with incorporated businesses as well as those with unincorporated businesses. Updated population controls are introduced annually with the release of January data.
Dashes indicate data not available.
Source: Current Population Survey
The current population survey is a monthly survey of households conducted by the Bureau of the Census for the Bureau of Labor Statistics.