| Official Name: | Union Township |
| Settlement Type: | Township |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Marshall |
| Government Type: | Indiana township |
| Unit Pref: | Imperial |
| Area Total Sq Mi: | 43.95 |
| Area Land Sq Mi: | 40.8 |
| Area Water Sq Mi: | 3.16 |
| Area Water Percent: | 7.19 |
| Population As Of: | 2020 |
| Population Footnotes: | [1] |
| Population Total: | 2771 |
| Population Density Sq Mi: | 75.7 |
| Elevation M: | 235 |
| Elevation Ft: | 771 |
| Coordinates: | 41.2233°N -86.4069°W |
| Postal Code Type: | ZIP codes |
| Postal Code: | 46511, 46563 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 0453924 |
Union Township is one of ten townships in Marshall County, Indiana, United States. As of the 2020 census, its population was 2,771 (down from 3,088 at 2010[2]) and it contained 1,949 housing units.
Union Township was organized in 1840. It was likely named after Union County, Indiana, the former home of some of the early settlers.[3]
The East Shore Historic District and Norris Farm-Maxinkuckee Orchard are listed on the National Register of Historic Places.[4] Woodbank was delisted in 2014.[5]
According to the 2010 census, the township has a total area of, of which (or 92.83%) is land and (or 7.19%) is water.[2]
(This list is based on USGS data and may include former settlements.)
The township contains these five cemeteries: Burr Oak, Cromley, Masonic, Washington and Zion.
The township is served by the Culver-Union Township Public Library.[6]