Illinois Route 101 is a 19.43 miles (31.27 km) east–west state road that runs from to the intersection of Illinois Route 61

Illinois Route 61

Illinois Route 61 is a rural state road in western Illinois that runs north and east from Illinois Route 96 in Ursa to the intersection of U.S. Route 136 west of Tennessee. Illinois route 61 is long.-Route description:...

 in Augusta

Augusta, Illinois

Augusta is a village in Hancock County, Illinois, United States. The population was 657 at the 2000 census. It is located near Weinberg-King State Park.- Geography :Augusta is located at ....

 east to U.S. Highway 67 one mile (1.6 km) east of Littleton

Littleton, Illinois

Littleton is a village in Schuyler County, Illinois, United States. The population was 197 at the 2000 census.-Geography:Littleton is located at ....

. The highway was officially established in 1924 along its current alignment. Route 101 is maintained by the Illinois Department of Transportation

Illinois Department of Transportation

The Illinois Department of Transportation is a state agency in charge of state-maintained public roadways of the U.S. state of Illinois. In addition, IDOT provides funding for rail, public transit and airport projects and administers fuel tax and federal funding to local juridictions in the...

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Route description

Route 101 begins at a junction with Route 61 in Augusta, in Hancock County

Hancock County, Illinois

Hancock County is a county located in the U.S. state of Illinois. According to the 2010 census, it has a population of 19,104, which is a decrease of 5.1% from 20,121 in 2000. Its county seat is Carthage. Hamilton is the largest city in Hancock County, with Carthage being the second largest...

. The route leaves Augusta to the east and crosses into Schuyler County, entering Weinberg-King State Park

Weinberg-King State Park

Weinberg-King State Park is an Illinois state park on in Schuyler County, Illinois, United States. It is located near Augusta, Illinois.-Geology and history:...

 across the county line. The highway continues east past the park until the community of Brooklyn

Brooklyn, Schuyler County, Illinois

Brooklyn is an unincorporated community in Schuyler County, Illinois, United States. Brooklyn is located on Illinois Route 101 west of Littleton....

, where it meets Route 99

Illinois Route 99

Illinois Route 99 is a north–south state road in western Illinois. It runs from Illinois Route 104 across the Illinois River and Meredosia, north to Illinois Route 101 in Brooklyn . This is a distance of .- Route description :...

. After passing through Brooklyn, Route 101 heads eastward through Littleton

Littleton, Illinois

Littleton is a village in Schuyler County, Illinois, United States. The population was 197 at the 2000 census.-Geography:Littleton is located at ....

 before terminating at a junction with U.S. Route 67

U.S. Route 67

U.S. Route 67 is a 1,560 mile long north–south U.S. highway in the Central United States. The southern terminus of the route is at the United States-Mexico border in Presidio, Texas, where it continues south as Mexican Federal Highway 16 upon crossing the Rio Grande. The northern...

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History

A road between Augusta

Augusta, Illinois

Augusta is a village in Hancock County, Illinois, United States. The population was 657 at the 2000 census. It is located near Weinberg-King State Park.- Geography :Augusta is located at ....

 and Littleton

Littleton, Illinois

Littleton is a village in Schuyler County, Illinois, United States. The population was 197 at the 2000 census.-Geography:Littleton is located at ....

 was marked as early as the 1917 Illinois highway map; this road followed the route of Route 101 between Littleton and Brooklyn

Brooklyn, Schuyler County, Illinois

Brooklyn is an unincorporated community in Schuyler County, Illinois, United States. Brooklyn is located on Illinois Route 101 west of Littleton....

, but took a more southerly route through Huntsville

Huntsville, Illinois

Huntsville is an unincorporated community in Schuyler County, Illinois, United States. Huntsville is southeast of Augusta. Huntsville had a post office, which closed on September 18, 2004....

 between Brooklyn and Augusta. Route 101 was designated along its current route under the 1924 State Bond Issue bill, which provided funds for the construction of Illinois Routes 47 to 185. By 1924, the road between Augusta and Littleton was aligned onto the current route of Route 101. Route 101 was first numbered on the 1929 highway map.

Major intersections

County	Location	Mile	Junction	Notes
Hancock Hancock County, Illinois Hancock County is a county located in the U.S. state of Illinois. According to the 2010 census, it has a population of 19,104, which is a decrease of 5.1% from 20,121 in 2000. Its county seat is Carthage. Hamilton is the largest city in Hancock County, with Carthage being the second largest...	Augusta Augusta, Illinois Augusta is a village in Hancock County, Illinois, United States. The population was 657 at the 2000 census. It is located near Weinberg-King State Park.- Geography :Augusta is located at ....	0
Schuyler	Brooklyn Brooklyn, Schuyler County, Illinois Brooklyn is an unincorporated community in Schuyler County, Illinois, United States. Brooklyn is located on Illinois Route 101 west of Littleton....	9.4
		19.4