Grass Lake, a village in Jackson County in the U.S. state of Michigan, was named for the shallow, marshy lake just to its north. The population was 1,173 at the 2010 census.

Today, the greater Grass Lake area includes the Village of Grass Lake, Grass Lake Township, and parts of the Waterloo Recreational Area north of I-94.

In 1842, the Michigan Central Railroad bypassed the original village and built a depot 1.5 miles (2.4 km) to the west when an offer of $1.50 an acre was offered (compared to $2.00 an acre at the previous city center) [1]. The village was relocated to this new location - its current location - to be closer to the rail depot and some of the original buildings were relocated to the new site.

In 1887, Grass Lake was awarded a stone depot designed by the same architects, Spier and Rohns, and with stone from the same quarry as the Ann Arbor station. The historic Romanesque Whistle Stop Depot offers displays of local interest and is available for rental.

The Grass Lake Historical Society also operates the Coe House Museum. The home was constructed in 1871 for Henry Van Winkle, who owned and operated a hardware store and farm equipment dealership in Grass Lake. In 1972 the home was donated to the historical society by Mrs. Myrta Coe. This Tuscan Vernacular home has been furnished to represent a typical home of the Victorian Era.

According to the United States Census Bureau, the village has a total area of 0.94 square miles (2.43 km²), all land.

According to the 2010 census, there were 1,173 people, 462 households, and 306 families residing in Grass Lake. The population density was 1,247.9 inhabitants per square mile (481.8/km²). There were 513 housing units at an average density of 545.7 per square mile (210.7/km²). The racial makeup was 94.7% White, 1.1% African American, 1.2% Native American, 0.1% Asian, 0.9% from other races, and 2.0% from two or more races. Hispanic or Latino of any race were 1.5% of the population.

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