- Southern Terminus:
- Livingston Street (CR 505) at the New York-New Jersey state line
- Northern Terminus:
- US 9W in Congers
- 10.92 miles
NY 303 is a major north/south route in Rockland County, extending from the border with New Jersey to Congers. It is a two- to four-lane road with traffic lights, undivided in most places. There are interchanges with the Palisades Parkway and the New York Thruway (I-87/I-287), as well as a grade-separated interchange with NY 59. The northernmost section of NY 303 is known as Country Ridge Road, although much of it has no name and is known solely by its number.