| Union Valley, New Jersey | |
| Settlement Type: | Unincorporated community |
| Pushpin Map: | USA New Jersey Middlesex County#USA New Jersey#USA |
| Pushpin Label: | Union Valley |
| Pushpin Label Position: | top |
| Pushpin Map Caption: | Location of Union Valley in Middlesex County Inset: Location of county within the state of New Jersey |
| Subdivision Type: | Country |
| Subdivision Name: |  United States |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Middlesex |
| Subdivision Type3: | Township |
| Subdivision Name3: | Monroe |
| Elevation Ft: | 115 |
| Coordinates: | 40.3036°N -74.4561°W |
| Blank Name: | GNIS feature ID |
| Blank Info: | 881362 |
| Unit Pref: | imperial |
Union Valley is an unincorporated community located within Monroe Township in Middlesex County, in the U.S. state of New Jersey.[1] Two large age-restricted communities lie within the settlement today, Clearbrook and Concordia. Other than those two communities, the only other buildings in the area are medical offices and facilities and some single-family homes along Union Valley Road (part of County Route 615 west of the area).