Millgrove is an unincorporated community in Jackson Township, Blackford County, in the U.S. state of Indiana.

Although the Blackford County Historical Society lists this community as a ghost town, homes are still maintained in the area.

[11] The line is now abandoned between the Blackford County communities of Converse and Hartford City, including the track that ran by Millgrove.

Located in the Jackson Township portion of Blackford County, Millgrove is situated on a former railroad line.

Future Northern Indiana, including what became Jackson Township and Millgrove, was flattened by two glaciers millions of years ago.

[14] These glaciers are also responsible for the rich Blackford County farmland, which includes the land surrounding Millgrove.

Average monthly precipitation ranges from about 2 to 4 inches (5 to 10 cm), with the heaviest occurring during May, June, and July.