[6] LaGrange County's initial settlers were Yankee immigrants, that is to say they were from New England and were descended from the English Puritans who settled that region in the colonial era.

They were part of a wave of New England settlers moving west into what was then the Northwest Territory after the completion of the Erie Canal.

They were mainly members of the Congregational Church, but as a result of the Second Great Awakening many became Baptists and many also converted to Pentecostalism and Methodism.

When they arrived in what is now LaGrange County, there was nothing but virgin forest and wild prairie, the New England settlers cleared roads, built farms, constructed churches, erected government buildings, and established post routes.

[7] The LaGrange County Courthouse was listed on the National Register of Historic Places in 1980.

[8] The courthouse and the annual fall festival are featured in the 1941 New Deal era post office mural painted by Jessie Hull Mayer.

[9] According to the 2010 census, LaGrange has a total area of 1.7 square miles (4.40 km2), all land.

The LaGrange County Courthouse was designed in 1878 by Thomas J. Tolan, & Son, Architects, of Fort Wayne, Indiana.

The courthouse was listed on the National Register of Historic Places on July 17, 1980.

LaGrange has a number of geocaches, wooded trails, and athletic parks, including a skate-park.