Attica Township is a civil township of Lapeer County in the U.S. state of Michigan. The population was 4,678 at the 2000 census.
According to the United States Census Bureau, the township has a total area of 36.2 square miles (93.9 km²), of which, 35.8 square miles (92.6 km²) of it is land and 0.5 square miles (1.2 km²) of it (1.32%) is water. It is located at latitude 43°1'49" North, longitude 83°9'58" West.
As of the census of 2000, there were 4,678 people, 1,602 households, and 1,291 families residing in the township. The population density was 130.8 per square mile (50.5/km²). There were 1,789 housing units at an average density of 50.0 per square mile (19.3/km²). The racial makeup of the township was 96.86% White, 0.13% African American, 0.58% Native American, 0.43% Asian, 0.02% Pacific Islander, 1.18% from other races, and 0.81% from two or more races. Hispanic or Latino of any race were 2.65% of the population.