[3] The township is located in the northwest corner of Washtenaw County.

[7] The township contains numerous lakes and also has the westernmost boundary of the Waterloo State Recreation Area, and Pinckney State Recreation Area has its western boundaries within the township.

[8] A small southern portion of the Unadilla State Wildlife Area extends into Lyndon Township.

[9] At the 2000 census,[1] there were 2,728 people, 877 households and 697 families residing in the township.

17.8% of all households were made up of individuals, and 4.2% had someone living alone who was 65 years of age or older.