Route 619 (Butcher Road) begins at an intersection with Disbrow Hill Road on the Monmouth-Middlesex County border in Monroe Township. Route 619 crosses several creeks before crossing at a traffic light for New Jersey Route 33 where the road becomes Applegarth Road. As the county route heads north, it crosses over the Millstone River and goes through the hamlet of Applegarth. It then intersects Halseey Reed Road and Federal Road Extenion with developments surrounding the area. It continues north and intersects County Route 615. After passing through some wooded area, the road widens and serves Clearbrook on the right and new commercial developments on the left. It continues past Half Acre Road and becomes a two lane road again. It intersects with County Route 614 and crosses over a pair of railroad tracks. The road then meets with access roads to warehouses on the right and Rossmoor on the left. It then comes to the traffic light for County Route 612 where Route 619 ends.