Indiana State Road 19

State Road 19
SR 19 highlighted in red
Route information
Maintained by INDOT
Length	143 mi[1] (230 km)
Existed	October 1, 1926[2]–present
Major junctions
South end	SR 32 / SR 38 in Noblesville
North end	Old M-205 at Michigan state line near Simonton Lake
Location
Country	United States
State	Indiana
Counties	Elkhart, Fulton, Hamilton, Howard, Kosciusko, Miami, Tipton
Highway system
Indiana State Highway System Interstate US State Scenic
← SR 18 → US 20

State Road 19 (SR 19) is a route on the Indiana State Highway System that runs between Noblesville and Elkhart in the US state of Indiana. The 143 miles (230.14 km) of Indiana SR 19 serve as a minor highway. One segment of the highway is listed on the National Highway System. Various sections are urban four-lane highway and rural two-lane highway. The highway passes through farmland, residential and commercial properties. The northernmost community along the highway is Simonton Lake at the Michigan state line.

SR 19 was first designated as U.S. Route 112 (US 112) in 1926. SR 19 replaced the original SR 21 designation of the highway which dated back to 1926. SR 21 ran from the Marion to Peru. SR 19 was extended over the years south to Noblesville.