Lincoln Township was organized in 1828

Population at the last census was 2040
Located in the southwestern part of the county, it borders the following townships:
• Gilead Township - north
• Harmony Township - east
• Bennington Township - southeast
• Peru Township - south
• Westfield Township - west
• Cardington Township - northwest
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. Two are elected in the year after the presidential election and one is elected in the year before it. 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.