List of county routes in Mercer County, New Jersey

The following is a list of county routes in Mercer County in the U.S. state of New Jersey.

For more information on the county route system in New Jersey as a whole, including its history, see County routes in New Jersey.

In addition to those listed below, the following 500-series county routes serve Mercer County:[1]

Typical shield for a Mercer County route. Shown here is CR 634 in Ewing