| Official Name: | Union Township |
| Settlement Type: | Township |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Floyd |
| Area Total Km2: | 106.59 |
| Area Land Km2: | 105.63 |
| Area Water Km2: | 0.97 |
| Unit Pref: | Imperial |
| Area Total Sq Mi: | 41.16 |
| Area Land Sq Mi: | 40.78 |
| Area Water Sq Mi: | 0.37 |
| Area Water Percent: | 0.91 |
| Population As Of: | 2000 |
| Population Total: | 682 |
| Population Density Km2: | 6.5 |
| Population Density Sq Mi: | 16.7 |
| Elevation M: | 307 |
| Elevation Ft: | 1007 |
| Coordinates: | 42.9578°N -92.8533°W |
| Timezone: | CST |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Postal Code Type: | ZIP codes |
| Postal Code: | 50636, 50653 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 0468821 |
Union Township is one of twelve townships in Floyd County, Iowa, United States. As of the 2000 census, its population was 682.[1]
According to the United States Census Bureau, Union Township covers an area of 41.16 square miles (106.59 square kilometers); of this, 40.78 square miles (105.63 square kilometers, 99.1 percent) is land and 0.37 square miles (0.97 square kilometers, 0.91 percent) is water.
(This list is based on USGS data and may include former settlements.)
The township contains these three cemeteries: Hillside, Westside and St. Mary's Catholic, Roseville, Iowa.