Ohio's congressional districts

Ohio is divided into 16 congressional districts, each represented by a member of the United States House of Representatives. After the 2010 Census, Ohio lost two House seats due to slow population growth compared to the national average, and a new map designed to sway seats for the Republican Party was signed into law on September 26, 2011.

List of members of the Ohio United States House delegation, their terms, their district boundaries, and the districts' political rating according to the CPVI. The delegation has a total of 16 members, with 12 Republicans and 4 Democrats.

...
Wikipedia