The median age was 36 years, for every 100 females there were 102.0 males.
Edwin Struve, a lifelong member of Archaeological Society of New Jersey and published author, will trace local ancient indigenous people in a presentation entitled ‘New Insights into Sparta’s Native American Prehistory.” A recent examination of the Indian artifacts found decades ago on the Van Kirk Homestead grounds in Sparta, currently on display at the Sparta Historical Society museum, revealed that they are far older than previously believed.
Rather than simply dating from the time that the Europeans arrived in the 1600s and 1700s, the artifacts proved to span many millennia from 6800 BC to at least 1200 AD as small groups of Native Americans returned repeatedly to a location that was exceptionally rich in seasonal resources. Edwin Struve will set Sparta’s prehistory in the larger context of the Native American prehistory of New Jersey and surrounding states.
An amusement park, called "Bertrand's Island", sprang up and was accessible via the lake, trolley or by car through Mount Arlington, the construction of Interstate 80, a highway that stretches from Teaneck, New Jersey, all the way across the country to San Francisco, California, triggered rapid growth in New York City's suburbs and led to Hopatcong becoming a permanent residential community.
The area had been called "Brookland" in the 19th century and the lake that was expanded to become Lake Hopatcong had been known as "Great Pond" or "Brookland Pond", during the 1830s, the name of the community had been modified to "Brooklyn", to match the spelling of the city on New York's Long Island.
The median income for a household in the borough was $65,799, and the median income for a family was $73,277.