In 1840, Massachusetts-born William M. Gray settled along the then-unnamed Grays Lake. Other farmers trickled into the area in 1840s. Gray moved to Waukegan in 1845. In 1880, the Wisconsin Central Railroad built a line from Fond du Lac, Wisconsin, to Chicago that passed by the east side of Grays Lake. In 1886, the railroad built a station there, naming it Grayslake. The village incorporated in 1895.
Grayslake is one of Lake County's oldest communities. The Village offers numerous family-friendly events, including the annual Lake County Fair and the country's largest evening farmers market. Visitors also enjoy unique dining and shopping experiences in Grayslake's historic Downtown.