# Wisconsin's 20th Senate district

The 20th Senate district of Wisconsin is one of 33 districts in the Wisconsin Senate. Located in eastern Wisconsin, the district comprises most of Washington County, northern Ozaukee County, and parts of southern Sheboygan County, eastern Fond du Lac County, and eastern Dodge County. It includes the cities of Fond du Lac and West Bend, and the villages of Belgium, Cedar Grove, Fredonia, North Fond du Lac, Saukville, and Slinger.

## Current elected officials

Dan Feyen is the senator representing the 20th district. He was first elected in 2016 in the 18th Senate district, but ran for election in the 20th district after the 2024 redistricting.
Each Wisconsin State Senate district is composed of three State Assembly districts. The 20th Senate district comprises the 58th, 59th, and 60th Assembly districts. The current representatives of those districts are:
* Assembly District 58: Rick Gundrum (R–Slinger)
* Assembly District 59: Robert Brooks (R–Saukville)
* Assembly District 60: Jerry L. O'Connor (R–Stockbridge)
The 20th Senate district, in its current borders, crosses two congressional districts. The portion of the district in Dodge and Washington counties falls within Wisconsin's 5th congressional district, which is represented by U.S. Representative Scott L. Fitzgerald. The remainder of the district, in Ozaukee, Sheboygan, and Fond du Lac counties, falls within Wisconsin's 6th congressional district, represented by U.S. Representative Glenn Grothman.
* Washington County courthouse in West Bend
* Aerial view of West Bend
* Downtown Slinger
* Harrington Beach State Park
* Eden
* Fredonia
* Cedarburg Bog
* South Main Street Historic District in Fond du Lac
* Lakeside Park on the south shore of Lake Winnebago
* North Main Street Historic District in Fond du Lac

## Past senators

The district has previously been represented by:
Note: the boundaries of districts have changed repeatedly over history. Previous politicians of a specific numbered district have represented a completely different geographic area, due to redistricting.
| Senator | Party | Notes | Session | Years | District Definition |
| District created by 1852 Wisc. Act 499. | District created by 1852 Wisc. Act 499. | District created by 1852 Wisc. Act 499. | District created by 1852 Wisc. Act 499. | 1852 | 1852–1856 1856–1860 1861–1865 1866–1870 Fond du Lac County |
| Bertine Pinckney | Dem. | Redistricted from 4th district. | 6th | 1853 | 1852–1856 1856–1860 1861–1865 1866–1870 Fond du Lac County |
| Charles A. Eldredge | Dem. | | 7th | 1854 | 1852–1856 1856–1860 1861–1865 1866–1870 Fond du Lac County |
| Charles A. Eldredge | Dem. | | 8th | 1855 | 1852–1856 1856–1860 1861–1865 1866–1870 Fond du Lac County |
| Edward Pier | Rep. | | 9th | 1856 | 1852–1856 1856–1860 1861–1865 1866–1870 Fond du Lac County |
| Edward Pier | Rep. | | 10th | 1857 | 1852–1856 1856–1860 1861–1865 1866–1870 Fond du Lac County |
| Edward Pier | Rep. | | 11th | 1858 | 1852–1856 1856–1860 1861–1865 1866–1870 Fond du Lac County |
| Edward Pier | Rep. | | 12th | 1859 | 1852–1856 1856–1860 1861–1865 1866–1870 Fond du Lac County |
| Elihu L. Phillips | Rep. | | 13th | 1860 | 1852–1856 1856–1860 1861–1865 1866–1870 Fond du Lac County |
| Elihu L. Phillips | Rep. | | 14th | 1861 | 1852–1856 1856–1860 1861–1865 1866–1870 Fond du Lac County |
| George W. Mitchell | Dem. | | 15th | 1862 | 1852–1856 1856–1860 1861–1865 1866–1870 Fond du Lac County |
| George W. Mitchell | Dem. | | 16th | 1863 | 1852–1856 1856–1860 1861–1865 1866–1870 Fond du Lac County |
| George F. Wheeler | Natl. Union | | 17th | 1864 | 1852–1856 1856–1860 1861–1865 1866–1870 Fond du Lac County |
| George F. Wheeler | Natl. Union | | 18th | 1865 | 1852–1856 1856–1860 1861–1865 1866–1870 Fond du Lac County |
| George F. Wheeler | Natl. Union | | 19th | 1866 | 1852–1856 1856–1860 1861–1865 1866–1870 Fond du Lac County |
| George F. Wheeler | Natl. Union | | 20th | 1867 | 1852–1856 1856–1860 1861–1865 1866–1870 Fond du Lac County |
| Edward S. Bragg | Dem. | | 21st | 1868 | 1852–1856 1856–1860 1861–1865 1866–1870 Fond du Lac County |
| Edward S. Bragg | Dem. | | 22nd | 1869 | 1852–1856 1856–1860 1861–1865 1866–1870 Fond du Lac County |
| Hiram S. Town | Rep. | | 23rd | 1870 | 1852–1856 1856–1860 1861–1865 1866–1870 Fond du Lac County |
| Hiram S. Town | Rep. | | 24th | 1871 | 1852–1856 1856–1860 1861–1865 1866–1870 Fond du Lac County |
| Joseph Wagner | Dem. | | 25th | 1872 | Eastern Fond du Lac County Town of Ashford Town of Auburn Town of Byron Town of Calumet Town of Eden Town of Empire Town of Forest Town of Marshfield Town of Osceola Town of Taycheedah |
| Joseph Wagner | Dem. | | 26th | 1873 | Eastern Fond du Lac County Town of Ashford Town of Auburn Town of Byron Town of Calumet Town of Eden Town of Empire Town of Forest Town of Marshfield Town of Osceola Town of Taycheedah |
| Joseph Wagner | Dem. | | 27th | 1874 | Eastern Fond du Lac County Town of Ashford Town of Auburn Town of Byron Town of Calumet Town of Eden Town of Empire Town of Forest Town of Marshfield Town of Osceola Town of Taycheedah |
| Joseph Wagner | Dem. | | 28th | 1875 | Eastern Fond du Lac County Town of Ashford Town of Auburn Town of Byron Town of Calumet Town of Eden Town of Empire Town of Forest Town of Marshfield Town of Osceola Town of Taycheedah |
| Daniel Cavanagh | Dem. | | 29th | 1876 | Eastern Fond du Lac County Town of Ashford Town of Auburn Town of Byron Town of Calumet Town of Eden Town of Empire Town of Forest Town of Marshfield Town of Osceola Town of Taycheedah |
| Daniel Cavanagh | Dem. | | 30th | 1877 | 1876–1881 1882–1887 1888–1891 Sheboygan County and Eastern Fond du Lac County Town of Ashford Town of Auburn Town of Calumet Town of Eden Town of Forest Town of Marshfield Town of Osceola Town of Taycheedah |
| Louis Wolf | Dem. | | 31st | 1878 | 1876–1881 1882–1887 1888–1891 Sheboygan County and Eastern Fond du Lac County Town of Ashford Town of Auburn Town of Calumet Town of Eden Town of Forest Town of Marshfield Town of Osceola Town of Taycheedah |
| Louis Wolf | Dem. | | 32nd | 1879 | 1876–1881 1882–1887 1888–1891 Sheboygan County and Eastern Fond du Lac County Town of Ashford Town of Auburn Town of Calumet Town of Eden Town of Forest Town of Marshfield Town of Osceola Town of Taycheedah |
| Patrick Henry Smith | Dem. | | 33rd | 1880 | 1876–1881 1882–1887 1888–1891 Sheboygan County and Eastern Fond du Lac County Town of Ashford Town of Auburn Town of Calumet Town of Eden Town of Forest Town of Marshfield Town of Osceola Town of Taycheedah |
| Patrick Henry Smith | Dem. | | 34th | 1881 | 1876–1881 1882–1887 1888–1891 Sheboygan County and Eastern Fond du Lac County Town of Ashford Town of Auburn Town of Calumet Town of Eden Town of Forest Town of Marshfield Town of Osceola Town of Taycheedah |
| Patrick Henry Smith | Dem. | | 35th | 1882 | 1876–1881 1882–1887 1888–1891 Sheboygan County and Eastern Fond du Lac County Town of Ashford Town of Auburn Town of Calumet Town of Eden Town of Forest Town of Marshfield Town of Osceola Town of Taycheedah |
| Patrick Henry Smith | Dem. | | 36th | 1883–1884 | 1876–1881 1882–1887 1888–1891 Sheboygan County and Eastern Fond du Lac County Town of Ashford Town of Auburn Town of Calumet Town of Eden Town of Forest Town of Marshfield Town of Osceola Town of Taycheedah |
| Ignatius Klotz | Dem. | | 37th | 1885–1886 | 1876–1881 1882–1887 1888–1891 Sheboygan County and Eastern Fond du Lac County Town of Ashford Town of Auburn Town of Calumet Town of Eden Town of Forest Town of Marshfield Town of Osceola Town of Taycheedah |
| Ignatius Klotz | Dem. | | 38th | 1887–1888 | 1876–1881 1882–1887 1888–1891 Sheboygan County and Eastern Fond du Lac County Town of Ashford Town of Auburn Town of Calumet Town of Eden Town of Forest Town of Marshfield Town of Osceola Town of Taycheedah |
| Major C. Mead | Dem. | | 39th | 1889–1890 | 1876–1881 1882–1887 1888–1891 Sheboygan County and Eastern Fond du Lac County Town of Ashford Town of Auburn Town of Calumet Town of Eden Town of Forest Town of Marshfield Town of Osceola Town of Taycheedah |
| Major C. Mead | Dem. | | 40th | 1891–1892 | 1876–1881 1882–1887 1888–1891 Sheboygan County and Eastern Fond du Lac County Town of Ashford Town of Auburn Town of Calumet Town of Eden Town of Forest Town of Marshfield Town of Osceola Town of Taycheedah |
| Dennis T. Phalen | Dem. | | 41st | 1893–1894 | Sheboygan County 1890 population: 42,489 |
| Dennis T. Phalen | Dem. | | 42nd | 1895–1896 | Sheboygan County 1890 population: 42,489 |
| Fred A. Dennett | Rep. | | 43rd | 1897–1898 | 1896–1901 1902–1911 1912–1921 1922–1953 1954–1963 1964–1971 Ozaukee and Sheboygan counties 1895 population: 64,941 1900 population: 66,708 1910 population: 72,011 |
| Fred A. Dennett | Rep. | | 44th | 1899–1900 | 1896–1901 1902–1911 1912–1921 1922–1953 1954–1963 1964–1971 Ozaukee and Sheboygan counties 1895 population: 64,941 1900 population: 66,708 1910 population: 72,011 |
| George W. Wolff | Rep. | | 45th | 1901–1902 | 1896–1901 1902–1911 1912–1921 1922–1953 1954–1963 1964–1971 Ozaukee and Sheboygan counties 1895 population: 64,941 1900 population: 66,708 1910 population: 72,011 |
| George W. Wolff | Rep. | | 46th | 1903–1904 | 1896–1901 1902–1911 1912–1921 1922–1953 1954–1963 1964–1971 Ozaukee and Sheboygan counties 1895 population: 64,941 1900 population: 66,708 1910 population: 72,011 |
| George W. Wolff | Rep. | | 47th | 1905–1906 | 1896–1901 1902–1911 1912–1921 1922–1953 1954–1963 1964–1971 Ozaukee and Sheboygan counties 1895 population: 64,941 1900 population: 66,708 1910 population: 72,011 |
| George W. Wolff | Rep. | | 48th | 1907–1908 | 1896–1901 1902–1911 1912–1921 1922–1953 1954–1963 1964–1971 Ozaukee and Sheboygan counties 1895 population: 64,941 1900 population: 66,708 1910 population: 72,011 |
| Henry Krumrey | Rep. | | 49th | 1909–1910 | 1896–1901 1902–1911 1912–1921 1922–1953 1954–1963 1964–1971 Ozaukee and Sheboygan counties 1895 population: 64,941 1900 population: 66,708 1910 population: 72,011 |
| Henry Krumrey | Rep. | | 50th | 1911–1912 | 1896–1901 1902–1911 1912–1921 1922–1953 1954–1963 1964–1971 Ozaukee and Sheboygan counties 1895 population: 64,941 1900 population: 66,708 1910 population: 72,011 |
| William J. Bichler | Dem. | | 51st | 1913–1914 | 1896–1901 1902–1911 1912–1921 1922–1953 1954–1963 1964–1971 Ozaukee and Sheboygan counties 1895 population: 64,941 1900 population: 66,708 1910 population: 72,011 |
| William J. Bichler | Dem. | | 52nd | 1915–1916 | 1896–1901 1902–1911 1912–1921 1922–1953 1954–1963 1964–1971 Ozaukee and Sheboygan counties 1895 population: 64,941 1900 population: 66,708 1910 population: 72,011 |
| Theodore Benfey | Rep. | | 53rd | 1917–1918 | 1896–1901 1902–1911 1912–1921 1922–1953 1954–1963 1964–1971 Ozaukee and Sheboygan counties 1895 population: 64,941 1900 population: 66,708 1910 population: 72,011 |
| Theodore Benfey | Rep. | | 54th | 1919–1920 | 1896–1901 1902–1911 1912–1921 1922–1953 1954–1963 1964–1971 Ozaukee and Sheboygan counties 1895 population: 64,941 1900 population: 66,708 1910 population: 72,011 |
| Theodore Benfey | Rep. | | 55th | 1921–1922 | 1896–1901 1902–1911 1912–1921 1922–1953 1954–1963 1964–1971 Ozaukee and Sheboygan counties 1895 population: 64,941 1900 population: 66,708 1910 population: 72,011 |
| Theodore Benfey | Rep. | | 56th | 1923–1924 | 1896–1901 1902–1911 1912–1921 1922–1953 1954–1963 1964–1971 Ozaukee and Sheboygan counties 1895 population: 64,941 1900 population: 66,708 1910 population: 72,011 |
| Herman E. Boldt | Rep. | | 57th | 1925–1926 | 1896–1901 1902–1911 1912–1921 1922–1953 1954–1963 1964–1971 Ozaukee and Sheboygan counties 1895 population: 64,941 1900 population: 66,708 1910 population: 72,011 |
| Herman E. Boldt | Rep. | | 58th | 1927–1928 | 1896–1901 1902–1911 1912–1921 1922–1953 1954–1963 1964–1971 Ozaukee and Sheboygan counties 1895 population: 64,941 1900 population: 66,708 1910 population: 72,011 |
| Herman E. Boldt | Rep. | | 59th | 1929–1930 | 1896–1901 1902–1911 1912–1921 1922–1953 1954–1963 1964–1971 Ozaukee and Sheboygan counties 1895 population: 64,941 1900 population: 66,708 1910 population: 72,011 |
| Herman E. Boldt | Rep. | | 60th | 1931–1932 | 1896–1901 1902–1911 1912–1921 1922–1953 1954–1963 1964–1971 Ozaukee and Sheboygan counties 1895 population: 64,941 1900 population: 66,708 1910 population: 72,011 |
| Harry W. Bolens | Dem. | | 61st | 1933–1934 | 1896–1901 1902–1911 1912–1921 1922–1953 1954–1963 1964–1971 Ozaukee and Sheboygan counties 1895 population: 64,941 1900 population: 66,708 1910 population: 72,011 |
| Harry W. Bolens | Dem. | | 62nd | 1935–1936 | 1896–1901 1902–1911 1912–1921 1922–1953 1954–1963 1964–1971 Ozaukee and Sheboygan counties 1895 population: 64,941 1900 population: 66,708 1910 population: 72,011 |
| Harry W. Bolens | Dem. | | 63rd | 1937–1938 | 1896–1901 1902–1911 1912–1921 1922–1953 1954–1963 1964–1971 Ozaukee and Sheboygan counties 1895 population: 64,941 1900 population: 66,708 1910 population: 72,011 |
| Harry W. Bolens | Dem. | | 64th | 1939–1940 | 1896–1901 1902–1911 1912–1921 1922–1953 1954–1963 1964–1971 Ozaukee and Sheboygan counties 1895 population: 64,941 1900 population: 66,708 1910 population: 72,011 |
| Gustave W. Buchen | Rep. | | 65th | 1941–1942 | 1896–1901 1902–1911 1912–1921 1922–1953 1954–1963 1964–1971 Ozaukee and Sheboygan counties 1895 population: 64,941 1900 population: 66,708 1910 population: 72,011 |
| Gustave W. Buchen | Rep. | | 66th | 1943–1944 | 1896–1901 1902–1911 1912–1921 1922–1953 1954–1963 1964–1971 Ozaukee and Sheboygan counties 1895 population: 64,941 1900 population: 66,708 1910 population: 72,011 |
| Gustave W. Buchen | Rep. | | 67th | 1945–1946 | 1896–1901 1902–1911 1912–1921 1922–1953 1954–1963 1964–1971 Ozaukee and Sheboygan counties 1895 population: 64,941 1900 population: 66,708 1910 population: 72,011 |
| Gustave W. Buchen | Rep. | | 68th | 1947–1948 | 1896–1901 1902–1911 1912–1921 1922–1953 1954–1963 1964–1971 Ozaukee and Sheboygan counties 1895 population: 64,941 1900 population: 66,708 1910 population: 72,011 |
| Gustave W. Buchen | Rep. | | 69th | 1949–1950 | 1896–1901 1902–1911 1912–1921 1922–1953 1954–1963 1964–1971 Ozaukee and Sheboygan counties 1895 population: 64,941 1900 population: 66,708 1910 population: 72,011 |
| Gustave W. Buchen | Rep. | | 70th | 1951–1952 | 1896–1901 1902–1911 1912–1921 1922–1953 1954–1963 1964–1971 Ozaukee and Sheboygan counties 1895 population: 64,941 1900 population: 66,708 1910 population: 72,011 |
| Louis H. Prange | Rep. | Died Aug. 1957. | 71st | 1953–1954 | 1896–1901 1902–1911 1912–1921 1922–1953 1954–1963 1964–1971 Ozaukee and Sheboygan counties 1895 population: 64,941 1900 population: 66,708 1910 population: 72,011 |
| Louis H. Prange | Rep. | Died Aug. 1957. | 72nd | 1955–1956 | 1896–1901 1902–1911 1912–1921 1922–1953 1954–1963 1964–1971 Ozaukee and Sheboygan counties 1895 population: 64,941 1900 population: 66,708 1910 population: 72,011 |
| Louis H. Prange | Rep. | Died Aug. 1957. | 73rd | 1957–1958 | 1896–1901 1902–1911 1912–1921 1922–1953 1954–1963 1964–1971 Ozaukee and Sheboygan counties 1895 population: 64,941 1900 population: 66,708 1910 population: 72,011 |
| 1896–1901 1902–1911 1912–1921 1922–1953 1954–1963 1964–1971 Ozaukee and Sheboygan counties 1895 population: 64,941 1900 population: 66,708 1910 population: 72,011 |||
| Harold F. Huibregtse | Rep. | Won 1958 special election. | 73rd | 1957–1958 | 1896–1901 1902–1911 1912–1921 1922–1953 1954–1963 1964–1971 Ozaukee and Sheboygan counties 1895 population: 64,941 1900 population: 66,708 1910 population: 72,011 |
| Harold F. Huibregtse | Rep. | Won 1958 special election. | 74th | 1959–1960 | 1896–1901 1902–1911 1912–1921 1922–1953 1954–1963 1964–1971 Ozaukee and Sheboygan counties 1895 population: 64,941 1900 population: 66,708 1910 population: 72,011 |
| Ernest Keppler | Rep. | Resigned 1979 after election as Wisconsin circuit court judge. | 75th | 1961–1962 | 1896–1901 1902–1911 1912–1921 1922–1953 1954–1963 1964–1971 Ozaukee and Sheboygan counties 1895 population: 64,941 1900 population: 66,708 1910 population: 72,011 |
| Ernest Keppler | Rep. | Resigned 1979 after election as Wisconsin circuit court judge. | 76th | 1963–1964 | 1896–1901 1902–1911 1912–1921 1922–1953 1954–1963 1964–1971 Ozaukee and Sheboygan counties 1895 population: 64,941 1900 population: 66,708 1910 population: 72,011 |
| Ernest Keppler | Rep. | Resigned 1979 after election as Wisconsin circuit court judge. | 77th | 1965–1966 | 1896–1901 1902–1911 1912–1921 1922–1953 1954–1963 1964–1971 Ozaukee and Sheboygan counties 1895 population: 64,941 1900 population: 66,708 1910 population: 72,011 |
| Ernest Keppler | Rep. | Resigned 1979 after election as Wisconsin circuit court judge. | 78th | 1967–1968 | 1896–1901 1902–1911 1912–1921 1922–1953 1954–1963 1964–1971 Ozaukee and Sheboygan counties 1895 population: 64,941 1900 population: 66,708 1910 population: 72,011 |
| Ernest Keppler | Rep. | Resigned 1979 after election as Wisconsin circuit court judge. | 79th | 1969–1970 | 1896–1901 1902–1911 1912–1921 1922–1953 1954–1963 1964–1971 Ozaukee and Sheboygan counties 1895 population: 64,941 1900 population: 66,708 1910 population: 72,011 |
| Ernest Keppler | Rep. | Resigned 1979 after election as Wisconsin circuit court judge. | 80th | 1971–1972 | 1896–1901 1902–1911 1912–1921 1922–1953 1954–1963 1964–1971 Ozaukee and Sheboygan counties 1895 population: 64,941 1900 population: 66,708 1910 population: 72,011 |
| Ernest Keppler | Rep. | Resigned 1979 after election as Wisconsin circuit court judge. | 81st | 1973–1974 | Northern Ozaukee County Most of Sheboygan County |
| Ernest Keppler | Rep. | Resigned 1979 after election as Wisconsin circuit court judge. | 82nd | 1975–1976 | Northern Ozaukee County Most of Sheboygan County |
| Ernest Keppler | Rep. | Resigned 1979 after election as Wisconsin circuit court judge. | 83rd | 1977–1978 | Northern Ozaukee County Most of Sheboygan County |
| --Vacant-- | --Vacant-- | --Vacant-- | 84th | 1979–1980 | Northern Ozaukee County Most of Sheboygan County |
| David W. Opitz | Rep. | Won 1979 special election. | 84th | 1979–1980 | Northern Ozaukee County Most of Sheboygan County |
| David W. Opitz | Rep. | Won 1979 special election. | 85th | 1981–1982 | Northern Ozaukee County Most of Sheboygan County |
| David W. Opitz | Rep. | Won 1979 special election. | 86th | 1983–1984 | Ozaukee County and Southeast Sheboygan County Eastern Washington County |
| Donald K. Stitt | Rep. | Resigned 1993. | 87th | 1985–1986 | Most of Ozaukee County Most of Washington County Eastern Dodge County Part of Fond du Lac County Part of Sheboygan County |
| Donald K. Stitt | Rep. | Resigned 1993. | 88th | 1987–1988 | Most of Ozaukee County Most of Washington County Eastern Dodge County Part of Fond du Lac County Part of Sheboygan County |
| Donald K. Stitt | Rep. | Resigned 1993. | 89th | 1989–1990 | Most of Ozaukee County Most of Washington County Eastern Dodge County Part of Fond du Lac County Part of Sheboygan County |
| Donald K. Stitt | Rep. | Resigned 1993. | 90th | 1991–1992 | Most of Ozaukee County Most of Washington County Eastern Dodge County Part of Fond du Lac County Part of Sheboygan County |
| Donald K. Stitt | Rep. | Resigned 1993. | 91st | 1993–1994 | Most of Ozaukee County Most of Washington County Part of Dodge County Part of Sheboygan County |
| Mary Panzer | Rep. | Won 1993 special election. | 91st | 1993–1994 | Most of Ozaukee County Most of Washington County Part of Dodge County Part of Sheboygan County |
| Mary Panzer | Rep. | Won 1993 special election. | 92nd | 1995–1996 | Most of Ozaukee County Most of Washington County Part of Dodge County Part of Sheboygan County |
| Mary Panzer | Rep. | Won 1993 special election. | 93rd | 1997–1998 | Most of Ozaukee County Most of Washington County Part of Dodge County Part of Sheboygan County |
| Mary Panzer | Rep. | Won 1993 special election. | 94th | 1999–2000 | Most of Ozaukee County Most of Washington County Part of Dodge County Part of Sheboygan County |
| Mary Panzer | Rep. | Won 1993 special election. | 95th | 2001–2002 | Most of Ozaukee County Most of Washington County Part of Dodge County Part of Sheboygan County |
| Mary Panzer | Rep. | Won 1993 special election. | 96th | 2003–2004 | Most of Ozaukee County Most of Washington County Southern Sheboygan County Southeast Fond du Lac County Part of Dodge County |
| Glenn Grothman | Rep. | Resigned 2015 after election to U.S. House. | 97th | 2005–2006 | Most of Ozaukee County Most of Washington County Southern Sheboygan County Southeast Fond du Lac County Part of Dodge County |
| Glenn Grothman | Rep. | Resigned 2015 after election to U.S. House. | 98th | 2007–2008 | Most of Ozaukee County Most of Washington County Southern Sheboygan County Southeast Fond du Lac County Part of Dodge County |
| Glenn Grothman | Rep. | Resigned 2015 after election to U.S. House. | 99th | 2009–2010 | Most of Ozaukee County Most of Washington County Southern Sheboygan County Southeast Fond du Lac County Part of Dodge County |
| Glenn Grothman | Rep. | Resigned 2015 after election to U.S. House. | 100th | 2011–2012 | Most of Ozaukee County Most of Washington County Southern Sheboygan County Southeast Fond du Lac County Part of Dodge County |
| Glenn Grothman | Rep. | Resigned 2015 after election to U.S. House. | 101st | 2013–2014 | Most of Washington County Northern Ozaukee County Western Sheboygan County Eastern Fond du Lac County Part of Calumet County |
| —Vacant-- | —Vacant-- | —Vacant-- | 102nd | 2015–2016 | Most of Washington County Northern Ozaukee County Western Sheboygan County Eastern Fond du Lac County Part of Calumet County |
| Duey Stroebel | Rep. | | 102nd | 2015–2016 | Most of Washington County Northern Ozaukee County Western Sheboygan County Eastern Fond du Lac County Part of Calumet County |
| Duey Stroebel | Rep. | | 103rd | 2017–2018 | Most of Washington County Northern Ozaukee County Western Sheboygan County Eastern Fond du Lac County Part of Calumet County |
| Duey Stroebel | Rep. | | 104th | 2019–2020 | Most of Washington County Northern Ozaukee County Western Sheboygan County Eastern Fond du Lac County Part of Calumet County |
| Duey Stroebel | Rep. | | 105th | 2021–2022 | Most of Washington County Northern Ozaukee County Western Sheboygan County Eastern Fond du Lac County Part of Calumet County |
| Duey Stroebel | Rep. | | 106th | 2023–2024 | Most of Washington County, northern Ozaukee County western Sheboygan County eastern Fond du Lac County southern Calumet County |
| Dan Feyen | Rep. | Elected 2024. | 107th | 2025–2026 | Most of Washington County eastern Fond du Lac County northern Ozaukee County parts of southern Sheboygan County part of northeast Dodge County |