Lyndon Township is a civil township of Washtenaw County in the U.S. state of Michigan. The population was 2,656 at the 2020 census. The township is located in the northwest corner of Washtenaw County. According to the U.S. Census Bureau, the township has a total area of 35.10 square miles, of which 32.08 square miles is land and 3.02 squ…Lyndon Township is a civil township of Washtenaw County in the U.S. state of Michigan. The population was 2,656 at the 2020 census. The township is located in the northwest corner of Washtenaw County. According to the U.S. Census Bureau, the township has a total area of 35.10 square miles, of which 32.08 square miles is land and 3.02 square miles is water.