 US 10 leads west to Evart and Reed City and east to Midland and Bay City, while US 127 leads north to Harrison and Grayling and south to Mount Pleasant and Lansing.According to the United States Census Bureau, Grant Township has a total area of , of which is land and , or 1.46%, is water.As of the census of 2000, there were 3,034 people, 1,151 households, and 874 families residing in the township.