The area that became Sigel was first surveyed in the fall of 1848 by crews working for the U.S. government.

In September 1849 another crew marked all the section corners of the eastern half of Sigel, walking the woods and swamps on foot, measuring with chain and compass.

A large part of the township is well timbered with Birch, Ash, Elm, Lind, Sugar, Oak, Ironwood and Some Pine.

[6]For a surveyor's description of the six mile square that includes the west half of Sigel, see Lafayette.

The town was founded on January 3, 1863, presumably named after Franz Sigel, a colonel in the Union Army during the American Civil War.

14.6% of all households were made up of individuals, and 4.1% had someone living alone who was 65 years of age or older.