Located in a 19 th century building which originally served as a Morris Canal locktender’s house, the Lake Hopatcong Historical Museum offers an engaging and informative look at the history of New Jersey’s largest lake.

Upcoming Events

Lake Hopatcong Block Party @ Hopatcong State Park
Oct 2 @ 10:00 am – 4:00 pm
One of the best days at Lake Hopatcong.  Food, shopping, demonstrations, boat rides and more.  And the Museum is open all day!
Sussex County Annual Heritage Weekend @ Hopatcong State Park
Oct 9 @ 12:00 pm – 4:00 pm

Annual weekend to celebrate history throughout Sussex County.  The Lake Hopatcong Historical Museum joins by being open on Saturday from noon to 4pm.  Please investigate the Sussex County Arts & Heritage Council website for activities at other museums and sites.

Fun Stuff!

Explore Exhibits


Historical Articles


Photo Gallery


Museum Shop


Hours of Operation

The museum will be open for the Lake Hopatcong Block Party on Saturday, October 2, 2021 from 10:00am to 4:00pm.  We will also be open for Sussex County's Heritage Weekend from noon to 4pm on Saturday, October 9, 2021.

We continue to take appointments for visits at other times.  To schedule an appointment, please email LHHISTORY@att.net or telephone 973-398-2616.

Please continue to email us at LHHISTORY@att.net for your research requests and for any other inquiries.