Steuben Township is one of twelve townships in Warren County, Indiana, United States. It was established in 1834. According to the 2020 census, its population was 493 and it contained 191 housing units. It contains no incorporated towns and is largely agricultural.

Historical population

Census	Pop.	Note	%±
1890	1,027		—
1900	997		−2.9%
1910	875		−12.2%
1920	729		−16.7%
1930	716		−1.8%
1940	709		−1.0%
1950	626		−11.7%
1960	617		−1.4%
1970	555		−10.0%
1980	575		3.6%
1990	495		−13.9%
2000	427		−13.7%
2010	487		14.1%
2020	493		1.2%
Source: US Decennial Census

The area that became Steuben Township was first settled in 1827. The township was officially created in March 1834 from a section of Pine Township ("all of Pine Township south and west of Redwood Creek") and was the seventh township to be formed. The township was named in honor of Baron Von Steuben, a Prussian soldier who fought for the Americans in the Revolutionary War.

The first settlements were in the more wooded areas near the river; it was only later that settlers realized the value of the prairie land for farming. The township grew rapidly in the 1830s and 1840s. In 1870, the population was 1068, and in 1882 the estimated taxable value in the Steuben Township was $770,905, higher than any of the other townships at that time.

According to the 2010 census, the township has a total area of 39.57 square miles (102.5 km), of which 39.55 square miles (102.4 km) (or 99.95%) is land and 0.03 square miles (0.078 km) (or 0.08%) is water. Most of its area is given over to agriculture. In the southeast there is approximately one mile of frontage on the Wabash River. The north and west portions are mostly open prairie and excellent farmland, whereas the south and east portions are more hilly and wooded. The streams of Chesapeake Creek, Mud Run and Possum Run pass through this township.

Steuben Township contains the towns of Johnsonville and Marshfield. The town of Chesapeake no longer exists, but was the first town in Steuben Township, about two miles east of present-day Marshfield; the first meetings of the township trustees were held there in the 1830s. Sloan, a small community that once existed on the township's northern border, is also extinct. The short-lived town of Dresser existed in the southeast part of the township around the turn of the 20th century.

There have been at least 15 cemeteries and burial sites in Steuben Township. Some still exist, but many have been destroyed by nature or by people (in many cases having been farmed over). These include Tillotson Cemetery (destroyed), Cronkhite Cemetery (destroyed), Jordan Cemetery (destroyed), Sisson Cemetery, Tomlinson Cemetery, High Cemetery (destroyed), Redwood Point, Payne Cemetery, Lyons Cemetery, and the Irish Catholic Cemetery (also known as Saint Patrick's Cemetery).

Indiana State Road 28 runs from the western border of the township, which is also the Indiana state line, east across the northern part of the township. Indiana State Road 63 is a four-lane divided highway which runs roughly north to south in the eastern part of the township; a 12-mile portion of its original route is now designated Indiana State Road 263, which passes through the southeastern corner of the township.

A Norfolk Southern Railway line runs from southwest to northeast through the township on its way from Danville to Lafayette. A Conrail line used to run from Danville into the township and continued north; but the tracks have been removed in recent years, though the railroad grade is still present.

• 
  Marshfield
• 
  Johnsonville
• 
  Sloan

Steuben Township is served by the Metropolitan School District of Warren County.

Steuben Township has a trustee who administers rural fire protection and ambulance service, provides relief to the poor, manages cemetery care, and performs farm assessment, among other duties. The trustee is assisted in these duties by a three-member township board. The trustees and board members are elected to four-year terms.

Steuben Township is part of Indiana's 8th congressional district, Indiana House of Representatives District 42, and Indiana State Senate District 38.

• United States Census Bureau TIGER/Line Shapefiles

• Goodspeed, Weston A. (1883). "Part II. History of Warren County". Counties of Warren, Benton, Jasper and Newton, Indiana. Chicago: F. A. Battey and Company. pp. 31–156. Retrieved September 19, 2010.
• Clifton, Thomas, ed. (1913). Past and Present of Fountain and Warren Counties Indiana. Indianapolis: B. F. Bowen and Company. pp. 201–335. Retrieved September 19, 2010.
• Warren County Historical Society (1966). A History of Warren County, Indiana. Williamsport, Indiana. pp. 102–117.{{cite book}}: CS1 maint: location missing publisher (link)
• Warren County Historical Society (2002). A History of Warren County, Indiana (175th Anniversary ed.). Williamsport, Indiana.{{cite book}}: CS1 maint: location missing publisher (link)