Merrillville is located in east-central Lake County, in the Chicago metropolitan area. The 31 square miles that span the city of Merrillville were once densely covered with forest and inhabited by the Potawatomi Indians. Originally known as McGwinn Village, the town went through several name changes before being named Merrillville, in honor of brothers Dudley and William Merrill. In 1971, it officially became a city under Indiana law.
Lake County, 33 miles SE of the Loop. Known as “Downtown Northwest Indiana,” the town of Merrillville, just south of Gary, encompasses a wealth of restaurants, banks, malls and businesses typical of late 20th century American suburbs. Merrillville, Indiana, in Lake County, is 7 miles S of Gary, Indiana and 30 miles SE of Chicago, Illinois. The city is included in the greater Gary area.