Palmer Square is convenient from all directions:

From New York
New Jersey Turnpike South to exit 9; follow signs for Route 1 South/Princeton; continue to Washington Road) see sign for Princeton Business District); take Washington Road to Nassau Street traffic light (Route 27); turn left onto Nassau Street; continue three blocks; turn right into Palmer Square (at white gazebo).

From Philadelphia
I-95 North to Route 206 North; follow approximately 5 miles to fork in the road (at traffic light) and bear right onto Nassau Street; continue three blocks; turn left into Palmer Square (at white gazebo).

From North Jersey
Route 206 South to Princeton; Nassau Street traffic light make left; continue three blocks; turn left into Palmer Square (at white gazebo).

From South Jersey
New Jersey Turnpike North to exit 8; turn right onto Route 33 East; Make first U-Turn across Route 33 onto Route 133 West; Follow to the end and bear right following signs for Princeton; continue on 571 to Route 1 traffic light; go through traffic light to Washington Road; take Washington Road to Nassau Street traffic light (Route 27); turn left onto Nassau Street; continue three blocks; turn right into Palmer Square.