to
Update
is a civil township of St. Clair County in the U.S. state of Michigan. The population was 3,814 at the 2000 census.
According to the United States Census Bureau, the township has a total area of 22.4 square miles (58.0 km²), of which, 21.2 square miles (54.9 km²) of it is land and 1.2 square miles (3.1 km²) of it (5.27%) is water.