Ohio County Map: All 88 Counties

Under Article X, Section 3 of the Ohio Constitution (ratified in 1933), any county may frame and adopt a charter providing for alternative forms of county government. For decades, traditional commissioner boards resisted reform until high-profile corruption scandals in Cuyahoga County (Cleveland) prompted sweeping change.

In November 2009, Cuyahoga County voters overwhelmingly approved a new charter, dismantling the three-member commission, county auditor, treasurer, recorder, and coroner, replacing them with an elected County Executive and an 11-member County Council.

Summit County (Akron) had earlier adopted a charter in 1979, creating an elected County Executive and County Council. These charter governments possess enhanced authority to coordinate regional economic development, consolidate public health districts, and streamline social service delivery across urbanized suburban municipalities.

During the Pleistocene ice ages, massive glaciers flattened northern and western Ohio, leaving behind deep deposits of mineral-rich glacial till that created one of the world's most productive corn and soybean agricultural belts across counties like Mercer, Darke, and Madison.

In contrast, unglaciated southeastern Ohio—comprising 32 counties designated as part of Appalachian Ohio (such as Athens, Vinton, Hocking, and Meigs)—features steep sandstone hills, deep river hollows, and scenic state forests. Historically dependent on bituminous coal mining and clay brick manufacturing, these counties today focus on outdoor recreation in Hocking Hills and ecological tourism.

Franklin County (Columbus) at the center of the state has surpassed Cuyahoga (Cleveland) and Hamilton (Cincinnati) as Ohio's economic and population titan, driven by Ohio State University, state government, financial fintech, and major semiconductor manufacturing investments.