The administrative divisions of Ohio are counties, municipalities (cities and villages), townships, special districts and school districts.
Elections for county officials are held in even-numbered years, while elections for officials in the municipalities, townships, and local boards of education are held in odd-numbered years.
Ohio is divided into 88 counties. Ohio law defines a structure for county government, although they may adopt charters for home rule. The minimum population requirement for incorporation is 1,600 for a village and 25,000 for a city.
Summit County and Cuyahoga County have chosen an alternate form of government, while all of the other counties have a structure that includes the following elected officers:
The Ohio Constitution allows counties to set up a charter government as many cities and villages do, but only Summit County and Cuyahoga County have done so, the latter having been approved by voters in November 2009. Counties do not possess home rule powers and can do only what has been expressly authorized by the Ohio General Assembly.
In the 2010 United States Census, the average population of Ohio's counties was 131,096; Cuyahoga County was the most populous (1,280,122) and Vinton County was the least (13,435). The average land area is 464 sq mi (1,200 km2). The largest county is Ashtabula County at 702.44 sq mi (1,819.3 km2) and the smallest is Lake County at 228.21 sq mi (591.1 km2). The total area of the state is 40,860.69 sq mi (105,828.7 km2).