Texas Washington (state) portalUnited States portalHistory portalNorth America portal This category is for topics specifically related to the decade 1870s in the U.S. state of Washington. 1820s1830s1840s1850s1860s1870s1880s1890s1900s1910s1920s 14th15th16th17th18th19th20th21st22nd23rd24th Subcategories This category has the following 2 subcategories, out of 2 total. 0–9 1870 in Washington (state) (1 C)E 1870s Washington (state) elections (1 C)