| Official Name: | Union Township |
| Settlement Type: | Township |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Indiana |
| Subdivision Type2: | County |
| Subdivision Name2: | Hendricks |
| Government Type: | Indiana township |
| Area Total Km2: | 62.28 |
| Area Land Km2: | 62.25 |
| Area Water Km2: | 0.03 |
| Area Total Sq Mi: | 24.05 |
| Area Land Sq Mi: | 24.04 |
| Area Water Sq Mi: | 0.01 |
| Area Water Percent: | 0.05 |
| Population As Of: | 2020 |
| Population Footnotes: | [1] |
| Population Total: | 1818 |
| Population Density Km2: | 29.8 |
| Population Density Sq Mi: | 77.2 |
| Elevation M: | 283 |
| Elevation Ft: | 928 |
| Coordinates: | 39.8792°N -86.5431°W |
| Blank Name: | GNIS feature ID |
| Blank Info: | 0453917 |
Union Township is one of twelve townships in Hendricks County, Indiana, United States. As of the 2010 census, its population was 1,856.[2]
Union Township covers an area of ; of this, or 0.05 percent is water.
(This list is based on USGS data and may include former settlements.)
The township contains nine cemeteries: Burgess, Cundiff, Groover, Leach Number 1, Leach Number 2, Lizton K of P, Montgomery, Pritchett and Vieley.