Northfield Township is a civil township of Washtenaw County in the U.S. state of Michigan. The population was 8,514 at the 2020 census. According to the U.S. Census Bureau, the township has a total area of 36.37 square miles, of which 35.77 square miles is land and 0.60 square miles is water.
Established: 1832
Elevation: 912 ft (278 m)
Country: United States
State: Michigan
County: Washtenaw
ZIP code(s): 48105 (Ann Arbor) · 48178 (South Lyon) · 48189 (Whitmore Lake)
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