| |- ! | James T. Igoe | | Democratic | 1926 | Incumbent re-elected. | nowrap | |- ! | M. Alfred Michaelson | | Republican | 1920 | Incumbent re-elected. | nowrap | |- ! | Stanley H. Kunz | | Democratic | 1920 | Incumbent re-elected. | nowrap | |- ! | Frederick A. Britten | | Republican | 1912 | Incumbent re-elected. | nowrap | |- ! | Carl R. Chindblom | | Republican | 1918 | Incumbent re-elected. | nowrap | |- ! | Frank R. Reid | | Republican | 1922 | Incumbent re-elected. | nowrap | |- ! | John T. Buckbee | | Republican | 1926 | Incumbent re-elected. | nowrap | |- ! | William Richard Johnson | | Republican | 1924 | Incumbent re-elected. | nowrap | |- ! | John Clayton Allen | | Republican | 1924 | Incumbent re-elected. | nowrap | |- ! | Edward John King | | Republican | 1914 | Incumbent re-elected. | nowrap | |- ! | William E. Hull | | Republican | 1922 | Incumbent re-elected. | nowrap | |- ! | Homer W. Hall | | Republican | 1926 | Incumbent re-elected. | nowrap | |- ! | William P. Holaday | | Republican | 1922 | Incumbent re-elected. | nowrap | |- ! | Charles Adkins | | Republican | 1924 | Incumbent re-elected. | nowrap | |- ! | Henry T. Rainey | | Democratic | 1922 | Incumbent re-elected. | nowrap | |- ! | J. Earl Major | | Democratic | 1926 | | Incumbent lost re-election.New member elected.Republican gain. | nowrap | |- ! | Edward M. Irwin | | Republican | 1924 | Incumbent re-elected. | nowrap | |- ! | William W. Arnold | | Democratic | 1922 | Incumbent re-elected. | nowrap | |- ! | Thomas Sutler Williams | | Republican | 1914 | Incumbent re-elected. | nowrap | |- ! | Edward E. Denison | | Republican | 1914 | Incumbent re-elected. | nowrap | |- ! rowspan=2 | | Richard Yates Jr. | | Republican | 1918 | Incumbent re-elected. | rowspan=2 nowrap | |- | Henry Riggs Rathbone | | Republican | 1922 | | Incumbent died July 15, 1928.New member elected.Republican hold. |} Indiana |- ! | Harry E. Rowbottom | | Republican | 1924 | Incumbent