It is estimated that one out of ten Ohio drivers are under suspension. The Cincinnati Enquirer learned of this by examining records on Ohio drivers and they found twelve percent were suspended. That compares to six percent in Kentucky and four percent in Indiana (citation). That means that over 154,000 drivers are under suspension in Cuyahoga County alone (citation).
In 2009 the state had more than 2.6 million suspensions over 7.35 million drivers. That's one suspension for every three drivers. In some counties, like Montgomery County (Dayton, Ohio) the rate is one suspension per two licenses (citation).