The 2020 census found 2,393 people in the township.

[3] Located in the southwestern corner of the county along the Ohio River, it borders the following townships: Bracken County, Kentucky lies across the Ohio River to the south.

The village of Higginsport is located in southeastern Lewis Township, along the Ohio River, and the unincorporated community of Feesburg lies in the township's north.

[5] 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,[6] 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.