Washtenaw County Population

Year Population

1825

1500

1830

4042

1840

23571

1850

28567

1860

35677

1870

41434

1880

41848

1890

42210

1900

47761

1910

44714

1920

49520

1930

65530

1940

80810

1950

134606

1960

172440

1970

234103

1980

264740

1990

282937

2000

322895

2005

341847

2006 (July 1)

345357

2008 (January)

349021

For latest monthly estimate from SEMCOG, go to http://www.semcog.org/homepage.aspx , select Data and Maps, click on Data Search by Community.

Sources: 1825: Washtenaw County: an Illustrated History, by Ruth Bordin, p. 20 (R 977.435 Bo)

1830-1960: United States Historical Census Data Browser, http://fisher.lib.virginia.edu/census/

1970-1980: County and City Data Book (United States Census) (R 317.3 Un, Ann Arbor District Library, Downtown Library)

1990- : County and City Extra (Bernan) (R 317.3 Un, Ann Arbor District Library, Downtown Library)

2006- : SEMCOG