- Southern Terminus:
- US 46 in Totowa
- Northern Terminus:
- Bergen-Passaic Expressway (I-80) in Totowa
- 0.47 miles
Union Boulevard is a north/south route from Little Falls to Paterson. Most of it is under the jurisdiction of the county, with a designation of Passaic CR 646. However, there is a small piece of Union Boulevard in Totowa between US 46 and I-80 that is designated NJ 62 and maintained by the state. The entire length of NJ 62 is multiplexed with CR 646.