• Open April through October
  • Friday and Saturday from 10:00am to 4:00pm
  • A variety of special events, workshops, and tours offered throughout the year
  • Formal school programs following NJ Core Curriculum standards are also offered
  • Visitor’s Center exhibits focus on the social, cultural, and natural history of the area
  • ADA accessible visitor's center and first floor of the mill
  • Free

Cooper Gristmill

66 Route 24, Chester, NJ 07930


Travel back in time to Milltown, a thriving community situated along the Black River. Built in 1826, Cooper Gristmill was once the heart of a thriving industrial community and played a vital role in the area's development during the Industrial Revolution. The Gristmill is the only restored water-powered mill in New Jersey and is listed on the State and National Registers of Historic Places. Witness the amazing power of the Black River, harnessed to run a steel water wheel and grind grains into flour using massive 2,000-pound millstones. These grinding stones can produce up to 800 pounds of flour per hour. Visitors are invited to take home stone-ground flour and cornmeal produced at the Gristmill.


  • Learn about the social, agricultural, and technological aspects of life in the nineteenth and early twentieth centuries
  • Embark on a guided tour of the Gristmill led by period-clothed staff

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