where is washington township, mi
About 2.8% of families and 3.7% of the population were below the poverty line, including 5.0% of those under age 18 and 2.7% of those age 65 or over.  1 American FactFinder. United States Census Bureau. 2  U.S. Geological Survey Geographic Names Information System: Washington Township, Macomb County, Michigan. Washington Charter Township is a charter township of Macomb County in the U.S. state of Michigan. The population was 25,139 at the 2010 census. Washington Township is bordered by the village of Romeo as well as Ray Township, Shelby Township, and Oakland Township.