Terre Coupee, Indiana

Plainfield is an unincorporated community in St. Joseph County, Indiana, United States. It is along U.S. Route 20 in the north-central part of Olive Township and is bordered to the south and west by the town of New Carlisle. Via US-20, Plainfield is 13 miles (21 km) west of South Bend and 23 miles (37 km) east of Michigan City.

Olive Township is one of thirteen townships in St. Joseph County, in the U.S. state of Indiana. As of the 2000 census, its population was 3,914.

New Carlisle is a town in Olive Township, St. Joseph County, in the U.S. state of Indiana. The population was 1,891, as of the 2020 Census. It is part of the South Bend–Mishawaka, IN-MI, Metropolitan Statistical Area.

Jeremiah H. Service House, also known as Old Republic, is a historic home located at New Carlisle, St. Joseph County, Indiana. It was built in 1860–1861, and is a two-story, square plan, Italianate style brick dwelling with additions. It features a full-width front porch, paired scroll-sawn brackets, and a central cupola topped by Turkish-style onion dome. Also on the property are the contributing ice house and smokehouse.: 5 It was listed on the National Register of Historic Places in 2000.

Haven Hubbard Home, also known as Hamilton Grove, is a historic sanitarium and national historic district located in Olive Township, St. Joseph County, Indiana. The district encompasses six contributing buildings and one contributing site on a former sanitarium originally developed as a working farm. It was developed between about 1860 and 1961, and includes examples of Second Empire, Queen Anne, Colonial Revival, and Collegiate Gothic architecture. Notable buildings include the Hubbard Homestead Home (c. 1860 /c. 1895), Homestead Shed (c. 1880), Homestead Barn (c. 1880), Pump House (c. 1860), Epp Hall (1922, 1964, 1984), and Haven Hubbard Home Parsonage (1960).It was listed on the National Register of Historic Places in 2013.

Olive is an unincorporated community in Olive Township, St. Joseph County, in the U.S. state of Indiana.

Hamilton is an unincorporated community in Olive Township, St. Joseph County, in the U.S. state of Indiana.

New Carlisle was a South Shore Line flag stop located at the corner of Arch and Zigler Streets in New Carlisle, Indiana. The station opened circa 1908 and was built by the Chicago, South Bend and Northern Indiana Railway whose line was immediately north of the South Shore Line. Both lines used the station until the Northern Indiana Railway abandoned its South Bend–Michigan City line leaving the South Shore as the sole occupant. The station remained in service on the South Shore Line until July 5, 1994, when it was closed as part of an NICTD service revision which also saw the closure of Ambridge, Kemil Road, Willard Avenue, LaLumiere, and Rolling Prairie.

The town of New Carlisle, abutting the LaPorte County line in Olive Township in northwestern St. Joseph County, perches on a hill overlooking the rich Terre Coupee prairie to the east. Its main street, Michigan Street, at forty-five feet is wider than the town's other streets and has been from its platting in 1835 a part of an improved thoroughfare, first the Michigan Road, later the Lincoln Highway and, finally, US 20. Two parallel railroads, Conrail and the electrically powered South Shore, run along the town's north edge at the bottom of the hill, beyond which still lies open farmland. This is largely true to the west and south as well, although in recent years commercial development has occurred at the western edge of town along US 20 at the county line, and some residential development to the south. Along US 20 to the east (toward South Bend) is a long line of ca. 1950 housing development, which until recently edged farmland between the highway and the railroads. Now much of this farmland is zoned industrial, owing largely to the construction less than 2 miles (3.2 km) away of the enormous I/N Tek steel mill, completed in 1990, and its subsidiary I/N Kote, in 1991. The district is the main commercial district on Michigan Street.

Zeigler is an unincorporated community in Olive Township, St. Joseph County, in the U.S. state of Indiana.The community is part of the South Bend–Mishawaka IN-MI, Metropolitan Statistical Area.