MacLean County is a county located in the Robloxia state of Rohio. As of the 2020 census, it is the second-most populous county in Rohio. Its county seat and largest city is Saint MacLean, which is the twin city of Retropolis. The county was founded in 1849 and is named for Alexander MacLean, the first governor of the Rohio Territory.

Fun Facts:

It is the smallest county in Rohio in terms of area, but the most densely populated. The Flanders River forms a municipal boundary on part of the city's west, southwest and southeast sides.

In addition to these federal highways, MacLean County is served by a number of Rohio State Routes, including Rohio State Route 36 and Rohio State Route 51 which are divided highways for much of their length.

The only airport located in MacLean County is Saint MacLean Downtown Airport, a smaller commercial airport with three runways primarily used for general aviation and military operations.