| Official Name: | Union Mills, Indiana |
| Settlement Type: | Unincorporated community and Census designated place |
| Pushpin Map: | Indiana#USA |
| Pushpin Label: | Union Mills |
| Pushpin Label Position: | left |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Indiana |
| Subdivision Type2: | County |
| Subdivision Name2: | LaPorte |
| Subdivision Type3: | Township |
| Subdivision Name3: | Noble |
| Coordinates: | 41.4942°N -86.7786°W |
| Elevation Ft: | 725 |
| Postal Code Type: | ZIP code |
| Postal Code: | 46382 |
| Blank Name: | FIPS code |
| Blank Info: | 18-77804[1] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 2830447 |
Union Mills is an unincorporated community in Noble Township, LaPorte County, Indiana.
Joseph Wheaton, one of the earliest settlers, came to the Mill Creek in 1832 and laid out a small village. The gristmill was built on Mill Creek was built in 1836 by Sylvanus Everts. Everts named the mill "Union Mills" and Wheaton's village followed to be known as Union Mills. In 1838 the village had only five log houses. A general store opened in 1840. The construction of three rail lines near Union Mills stimulated growth.[2]
Union Mills was platted in 1849, but there had been a settlement at the site for some time prior.[3] The community took its name from a gristmill constructed in the 1830s.[4]
Union Mills has a public library, a branch of the LaPorte County Public Library.[5]
Union Mills has a public school, South Central, that provides education from Kindergarten through 12th grade.
Since its founding in 1832, Union Mills has grown to about 2,000 people.[6] [7] [8]