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is a charter township of Macomb County in the U.S. state of Michigan. As of the 2000 census, the township population was 37,405. The township was organized in 1842, formed out of a portion of Macomb Township.
According to the United States Census Bureau, the township has a total area of 30.7 square miles (79.4 km²), of which, 27.9 square miles (72.2 km²) of it is land and 2.8 square miles (7.2 km²) of it (9.07%) is water.
Chesterfield Township is bordered on the north by Lenox Township and the village of New Haven; on the east by Ira Township and New Baltimore; on the southeast by Anchor Bay, which is a part of Lake Saint Clair; on the south by Harrison Township; and on the west by Macomb Township.
In the first decade of the 21st century, much of Chesterfield Township is dominated by subdivisions and shopping developments, in contrast to just thirty or so years earlier when the community was considerably more rural. The far northern end of the township is still largely rural. Anchor Bay influences the southeastern part of the community, where many pleasure boats, docks, and marine-related businesses can be found.