Historical Tables of the Iowa Legislature

Annually updated tables which detail the composition of the Territory of Iowa Legislative Assembly (1838-1846) and the Iowa General Assembly (1846-Current).

The primary sources of information for these tables are archived Iowa Acts, Iowa Official Registers, Senate Journals, House Journals, and Bluebooks. Secondary sources include legislative manuals, directories, newspapers, books, family-supplied data, and obituaries. While the Legislative Services Agency (LSA) attempts to cross-check sources in order to be historically accurate, errors are possible. The LSA welcomes additional information from our readers. You can contact the LSA at: webmaster@legis.iowa.gov.

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Regular and Extraordinary Sessions (1838 – 2018)
Party Affiliations of Legislators (1838 – 2018)
Service of Legislators (1838 – 2018)
Legislators with Twenty or More Years of Service (2018)
Women Legislators (2018)
Presidents of the Senate (1838 – 2018)
Secretaries of the Senate (1846 – 2018)
Members of the Senate by Assembly (1838 – 2018)
Members of the Senate by Home County (1838 – 2018)
Speakers of the House of Representatives (1838 – 2018)
Chief Clerks of the House of Representatives (1846 – 2018)
Members of the House of Representatives by Assembly (1838 – 2018)
Members of the House of Representatives by Home County (1838 – 2018)
1844 Iowa Constitutional Convention Members
1846 Iowa Constitutional Convention Members
1857 Iowa Constitutional Convention Members
Non-Serving Legislators-Elect (2018)