24/7 Trauma & Biohazard Cleanup Near Hearthstone Dyer, IN

Dyer is a town in St. John Township, Lake County, in Indiana's northwest corner — a southeastern suburb of Chicago about 30 miles from downtown Chicago, with the Illinois state line forming its entire western border.

The Dyer area was first settled in 1838 and its original town plat was recorded on June 1, 1855; Dyer was incorporated as a town in 1910.

Dyer is named for Martha Dyer Hart, wife of developer Aaron Norton Hart, who built roads and drainage works in the area and was killed in 1883 while working on a ditch near Plum Creek; Hart Street in town carries his name.

The town's motto is "Striving Higher in Dyer."

The 2020 census counted 16,517 people in Dyer, living in 6,282 households — a dramatic climb from just 545 residents when Dyer was first counted as a town in 1910.

U.S. Route 30, the Lincoln Highway, runs through Dyer, and the stretch between Dyer and Schererville was part of the highway's famed "Ideal Section," a model demonstration of early road building.

South of U.S. 30, Dyer is crossed by a steep sand ridge marking the Glenwood Shoreline, an ancient beach ridge left by glacial Lake Chicago, the ancestor of Lake Michigan.

Meyer's Castle, a landmark estate in Dyer, was listed on the National Register of Historic Places in 1984.

Dyer has its own Amtrak station, served by the Cardinal train running between Chicago and New York via Washington, D.C.

In March 2026 the new Munster/Dyer station on the South Shore Line's Monon Corridor opened, with overflow parking in Dyer giving residents commuter rail access toward Chicago.