Iowa's 15th Senate district

The 15th District of the Iowa Senate is located in central Iowa, and is currently composed of part of the city of Des Moines in Polk County.

Current elected officials

Tony Bisignano is the senator currently representing the 15th District.
The area of the 15th District contains two Iowa House of Representatives districts:

The 29th District
The 30th District

The district is also located in Iowa's 3rd congressional district, which is represented by U.S. Representative Zach Nunn.

Historical district boundaries

Source:

Map	Description	Years effective	Notes
	Black Hawk County Buchanan County Clayton County Delaware County Dubuque County Fayette County	1846-1849	From 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.
	Allamakee Black Hawk County Buchanan County Clayton County Delaware County Dubuque County Fayette County Winneshiek County	1850-1851
	Madison County Marion County Warren County	1852-1855
	Keokuk County	1856-1859
	Washington County	1860-1863
	Muscatine County	1864-1867
	Washington County	1868-1873
	Lousia County Washington County	1874-1877
	Louisa County	1878-1883
	Marion County	1884-1887
	Marion County Monroe County	1888-1962
	Pottawattamie County	1963-1966
	Scott County	1967-1970	Beginning with the 62nd General Assembly, Iowa implemented a temporary measure to meet the requirements of Reynolds v. Sims. Under this plan, each senate district received one senator, except for seven major cities, which received additional senators based on population. Senate District 15 in Davenport had two senators until 1970.
	Calhoun County Webster County	1971-1972	In 1970, the Iowa Legislature passed an amendment to the Iowa Constitution setting forth the rules for legislative redistricting in order to abide by the rules established by the Reynolds v. Sims Supreme Court case. The first reapportionment map created by the Republican controlled legislature was deemed unconstitutional, but was still used for the 1970 election.
	Linn County	1973-1982
	Cerro Gordo County Chickasaw County Floyd County Howard County Mitchell County	1983-1992
	Chickasaw County Floyd County Howard County Mitchell County Winneshiek County	1993-2002
	Johnson County Big Grove Township Cedar Township Clear Creek Township Graham Township Hardin Township Jefferson Township Madison Township Monroe Township Newport Township Oxford Township Penn Township Coralville Iowa City Bertram Township Brown Township Buffalo Township College Township Franklin Township Linn Township Marion Township *Region south of Marion and west of US-151 Putnam Township Bertram Ely Lisbon Mount Vernon Springville	2003-2012
	Jasper County Excluding Elk Creek Township Fairview Township Lynn Grove Township Palo Alto Township Lynnville Monroe Reasnor Sully Polk County Beaver Township Camp Township Clay Township Elkhart Township Franklin Township Four Mile Township Washington Township Altoona Bondurant Carlisle *Northern areas formerly part of Fourmile Township Elkhart Mitchellville Runnells		-
	Polk County Des Moines	2023-present	-