The 20th District of the Iowa Senate is located in central Iowa, and is currently composed of part of Polk County.
Current elected officials Mike Pike is the senator currently representing the 20th District.
The area of the 20th District contains two Iowa House of Representatives districts: The 39th District (represented by Rick L. Olson) The 40th District (represented by Bill Gustoff)
The district is also located in Iowa's 3rd congressional district, which is represented by Zach Nunn.
List of representatives
Representative Party Dates Residence Notes Democrat1852–1853Polk County, Iowa Democrat1854–1856Guthrie County, IowaSenator Bryan died in office in 1856 Whig1854–1855Polk County, Iowa Republican1856–1859Iowa City, Iowa Republican1860–1861Lyons, Iowa Republican1862–1863Lyons, Iowa Republican1864–1865Grinnell, Iowa Republican1866–1867Warren County, Iowa Republican1868–1871Indianola, Iowa Republican1872–1875Hartford, Iowa Republican1876–1877Indianola, Iowa Republican1878–1881Muscatine, Iowa Republican1882–1885Muscatine County, Iowa Democrat1886–1889Muscatine County, Iowa Democrat1890–1893Muscatine, Iowa Republican1894–1897Columbus Junction, Iowa Republican1898–1901Muscatine, Iowa Republican1902–1906Columbus Junction, Iowa Republican1907–1910West Liberty, Iowa Democrat1911–1914Louisa County, Iowa Republican1915–1918Muscatine, Iowa Republican1919–1926Muscatine County, Iowa Republican1927Morning Sun, IowaSenator Wilson died before assuming office in 1927. Republican1931–1934Wapello, Iowa Republican1935–1942Muscatine County, Iowa Republican1943–1946Louisa County, Iowa Republican1947–1954Muscatine, Iowa Republican1955–1962Columbus Junction, Iowa Democratic1963–1964Cedar Rapids, Iowa Republican1965–1966Cedar Rapids, Iowa Democratic1967–1970Des Moines, IowaIn 1964, after previous amendments to the Iowa Constitution were determined to violate the 14th Amendment, an interim plan increased the number of senators and representatives in the state by apportioning additional senators and representatives to the most populous districts/counties. This plan existed from 1965 to 1970, when a new districting and apportionment plan was adopted. Democratic1967–1970Des Moines, Iowa Democratic1967–1970Des Moines, Iowa Democratic1967–1970Des Moines, Iowa Democratic1967–1970Des Moines, Iowa Republican1971–1972Waterloo, Iowa Republican1973–1980Marshall County, Iowa Republican1981–1982Marshall County, Iowa Republican1983–1988Scott County, Iowa Republican1989–1992Scott County, Iowa Republican1993–2000Cedar County, Iowa Democratic2001–2002Clarence, Iowa Republican2003–2008Gladbrook, Iowa Republican2009–2012Keystone, Iowa Republican2013–2022Urbandale, Iowa Democratic2023–2024Des Moines, IowaMike PikeRepublican2025–PresentDes Moines, Iowa
Historical district boundaries
Map Description Years effective NotesBoone County Bancroft County Calhoun County (named Fox County at the time) Cerro Gordo County Dallas County Emmet County Franklin County Greene County Guthrie County Hancock County Hamilton County (named Risley County at the time) Hardin County Humboldt County Jasper County Kossuth County Marshall County Palo Alto County Pocahontas County Polk County Story County Webster County (named Yell County at the time) Winnebago County Worth County Wright County1852–1855From 1846 to 1857, district numbering was not utilized by the Iowa State Legislature. This convention was added with the passing of the 1857 Iowa Constitution. Numbering of districts pre-1857 is done as a matter of historic convenience.Iowa County Johnson County1856–1859Clinton County1860–1863Warren County1864–1877Muscatine County1878–1887Louisa CountyMuscatine County1888–1962Linn County1963–1966Polk County1967–1970Black Hawk County (partial)1971–1972Grundy County (partial) Hardin County (partial) Jasper County (partial) Marshall County (partial) Story County (partial)1973–1982Scott County (partial)1983–1992Cedar County Clinton County (partial) Jones County (partial) Scott County (partial)1993–2002Benton County Grundy County Iowa County (partial) Honey Creek Township Marengo Township Washington Township Marengo Tama County Excluding Columbia Township Richland Township Salt Creek Township Chelsea2003–2012Polk County (partial) Jefferson Township Grimes Johnston Urbandale2013–2022Polk County (partial) Altoona Des Moines (partial) North East part of the city Pleasant Hill2023–present
See also Iowa General Assembly Iowa Senate
References