county in New Jersey, United States

Mercer County is in the Delaware River Region of New Jersey.


Map of Mercer County (New Jersey)
  • 1 Trenton — state capital
  • 2 Ewing — home of The College of New Jersey (TCNJ)
  • 3 Hightstown
  • 4 Princeton — the site of the famous Ivy League university
  • 5 Robbinsville
  • 6 Titusville — site where Washington crossed the Delaware River
  • 7 West Windsor - blue ribboned school district

Other destinations


Get in

Get around


  • 1 Hopewell Museum (28 East Broad Street).
  • 2 Old School Baptist Meeting House. Contains the grave of John Hart.



  • Mercer County Community College, West Windsor
  • Princeton University, Princeton
  • Rider University Lawrence Township
  • The College of New Jersey (TCNJ), Ewing Township
  • Thomas Edison State College, Trenton



Stay safe

Trenton is one of the best cities in Jersey so enjoy it has a lot of fun things to do and it is top 10 of the best cities for young people

Go next

This region travel guide to Mercer County is an outline and may need more content. It has a template, but there is not enough information present. If there are Cities and Other destinations listed, they may not all be at usable status or there may not be a valid regional structure and a "Get in" section describing all of the typical ways to get here. Please plunge forward and help it grow!