Located at the center of the county, it borders the following townships: Most of the city of Bellefontaine, the county seat of Logan County, is located in Lake Township, occupying all but the northern, southeastern, and southwestern parts of the township.

[6] Statewide, other Lake Townships are located in Ashland, Stark, and Wood counties.

The township is governed by a three-member board of trustees, who are elected in November of odd-numbered years to a four-year term beginning on the following January 1.

There is also an elected township fiscal officer, who serves a four-year term beginning on April 1 of the year after the election, which is held in November of the year before the presidential election.

Highways in Lake Township include U.S.