| COUNTIES REPRESENTED. | NAMES OF MEMBERS. |
| Johnson, Iowa, and Poweshiek | George D. Crosthwait. |
| Jasper, Polk, Dallas, Guthrie, Greene, Boone, Story, Marshall, Hardin, Risley, Yell, Fox, Pocahontas, Humboldt, Wright, Franklin, Cerro Gordo, Hancock, Kossuth, Palo Alto, Emmet, Bancroft, Winnebago, Worth | Andrew Y. Hull. |
| Jackson | Elisha F. Clark. |
| Jackson and Jones | Nathan G. Sales. |
| Linn, Benton and Tama | Isaac M. Preston. |
| Dubuque, Delaware, Buchanan, Black Hawk, Grundy, Butler, Bremer, Clayton, Fayette, Allamakee, Winneshiek, Howard, Mitchell, Floyd, Chickasaw | John G. Shields, Warner Lewis, Maturin L. Fisher. |
Democrats, 20; Whigs, 11.
House of Representatives.
| James Grant, Speaker, Democrat. |
| J. S. Hooton, Chief Clerk, Democrat. |
| COUNTIES REPRESENTED. | NAMES OF MEMBERS. |
| Lee | S. G. Wright, H. Washbutn, J. S. Gilmore, J. M. Anderson, F. Heaser, S. W. Sears. |
| Des Moines | James W. Grimes, Justus Clark, W. Seymour, J. Wilson Williams. |
| Van Buren | Anderson McPherrin, Lewis Fordyce, Jacob Ream, Robert Russell. |
| Jefferson | Samuel Whitmore, W. T. Rogers, H. B. Mitchell. |
| Henry | Robert Caulk, James C. Green, Levi Jessup. |
| Wapello | Robert Cock, James C. Ramsey. |
| Wapello, Monroe, Lucas, Clarke | Henry Allen. |
| Monroe, Lucas and Clark | John S. Townsend. |
| Davis | Albert Duckworth, John A. Drake. |
| Davis, Appanoose, Wayne and Decatur | Abraham Putman. |
| Appanoose, Wayne and Decatur | Harvey B. Duncan. |
| Pottawattamie | A. S. Bryant. |
| Mills, Montgomery, Adams, Union, Ringgold, Taylor, Page and Fremont | William C. Means. |
| Pottawattamie, Mills, Remont, Page, Taylor, Ringgold, Union, Adams, Montgomery, Cass, Adair, Audubon, Shelby, Harrison, Monona, Crawford, Carroll, Sac, Ida, Wahkaw, Plymouth, Cherokee, Buena Vista, Sioux, O'Brien, Clay, Dickinson, Osceola and Buncombe | Joseph L. Sharp |
| Louisa | Micajah Reeden, John Cleaves. |
| Washington | David Bunker, Horace H. Wilson. |
| Keokuk | Harvey Stevens. |
| Mahaska | William R. Ross. |
| Keokuk and Mahaska Samuel Coffin. | |
| Marion, Warren and Madison | P. Gad Bryan, James M. Walters, Napoleon B. Allison. |
| Scott | James Grant, LeRoy Dodge. |
| Muscatine | Elijah Sells, Freeman Alger. |
| Cedar | Amos Witter. |
| Clinton | William G. Haun. |
| Johnson | Gilman Folsom. |
