Union Township is one of twelve townships in Boone County, Indiana. As of the 2010 census, its population was 2,357 and it contained 864 housing units.

History

The Simpson-Breedlove House was listed on the National Register of Historic Places in 2016.

Geography

According to the 2010 census, the township has a total area of 25.15 square miles (65.1 km), of which 25.11 square miles (65.0 km) (or 99.84%) is land and 0.04 square miles (0.10 km) (or 0.16%) is water.

Unincorporated towns

• Big Springs
• Gadsden
• Northfield
• Rosston

Adjacent townships

• Center (west)
• Eagle (south)
• Marion (north)
• Worth (southwest)
• Clay Township, Hamilton County (southeast)
• Washington Township, Hamilton County (east)

Major highways

• U.S. Route 421
• Indiana State Road 32