Knowlton Township, New Jersey facts for kids
Quick facts for kids
Knowlton Township, New Jersey
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Township
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![]() An old barn in Knowlton Township, February 2008
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![]() Location of Knowlton Township in Warren County highlighted in yellow (right). Inset map: Location of Warren County in New Jersey highlighted in black (left).
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![]() Census Bureau map of Knowlton Township, New Jersey
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Country | ![]() |
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State | ![]() |
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County | ![]() |
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Royal charter | February 23, 1763 | |
Incorporated | February 21, 1798 | |
Named for | Thomas Knowlton or "knoll town" | |
Government | ||
• Type | Township | |
• Body | Township Committee | |
Area | ||
• Total | 25.33 sq mi (65.60 km2) | |
• Land | 24.72 sq mi (64.03 km2) | |
• Water | 0.60 sq mi (1.56 km2) 2.38% | |
Area rank | 106th of 565 in state 5th of 22 in county |
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Elevation | 528 ft (161 m) | |
Population
(2020)
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• Total | 2,894 | |
• Estimate
(2023)
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2,926 | |
• Rank | 453rd of 565 in state 14th of 22 in county |
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• Density | 117.1/sq mi (45.2/km2) | |
• Density rank | 533rd of 565 in state 18th of 22 in county |
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Time zone | UTC−05:00 (Eastern (EST)) | |
• Summer (DST) | UTC−04:00 (Eastern (EDT)) | |
ZIP Codes | ||
Area code(s) | 908 | |
FIPS code | 3404137320 | |
GNIS feature ID | 0882241 |
Knowlton Township is a small community in Warren County, New Jersey. In 2020, about 2,894 people lived here. This number was a little lower than in 2010, but higher than in 2000.
Contents
History of Knowlton Township
Knowlton Township was first created on February 23, 1763, by a special permission from the King, called a Royal charter. At that time, it was part of Sussex County. Later, on February 21, 1798, it officially became a township. Then, in 1824, it became part of the new Warren County.
Over the years, parts of Knowlton Township were used to form other towns. For example, Hope Township was formed in 1839, and Blairstown Township was formed in 1845.
What's in a Name?
The name "Knowlton" might come from a brave soldier named Thomas Knowlton. He was a Colonel in the Continental Army during the American Revolutionary War. Sadly, he died in battle. Another idea is that the name comes from the word "knolls," which means small hills. This makes sense because the area has many rolling hills. Sometimes, older maps even spelled it "Knawltown."
Local Communities and Mail
Knowlton Township uses postal ZIP Codes from nearby towns like Columbia (07832) and Delaware (07833). A few residents also get their mail from the Blairstown (07825) post office. Inside the township, you'll find several small villages and areas. These include Browning, Deckers Ferry, Mount Pleasant, Polkville, Ramseyburg, Warrington, and Knowlton itself.
Geography of the Township
Knowlton Township covers about 25.33 square miles (65.60 square kilometers). Most of this area is land, with a small part being water. The township is located in the Kittatinny Valley. This valley is part of the much larger Great Appalachian Valley, which stretches for 700 miles from Canada to Alabama.
Neighboring Towns
Knowlton Township shares its borders with several other towns in Warren County. These include Blairstown Township, Hardwick Township, Hope Township, and White Township.
Small Communities Inside Knowlton
Within Knowlton Township, there are several small, unincorporated communities. These are places that don't have their own separate local government. Some of these include Columbia, Delaware, and Hainesburg. Other small areas are Browning, Deckers Ferry, Mount Pleasant, Polkville, Ramseyburg, and Warrington.
Population and People
Historical population | |||
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Census | Pop. | %± | |
1810 | 2,064 | — | |
1820 | 2,701 | 30.9% | |
1830 | 2,827 | 4.7% | |
1840 | 2,310 | * | −18.3% |
1850 | 1,356 | * | −41.3% |
1860 | 1,557 | 14.8% | |
1870 | 1,691 | 8.6% | |
1880 | 1,476 | −12.7% | |
1890 | 1,411 | −4.4% | |
1900 | 1,210 | −14.2% | |
1910 | 1,556 | 28.6% | |
1920 | 1,073 | −31.0% | |
1930 | 1,049 | −2.2% | |
1940 | 1,084 | 3.3% | |
1950 | 1,260 | 16.2% | |
1960 | 1,442 | 14.4% | |
1970 | 1,738 | 20.5% | |
1980 | 2,074 | 19.3% | |
1990 | 2,543 | 22.6% | |
2000 | 2,977 | 17.1% | |
2010 | 3,055 | 2.6% | |
2020 | 2,894 | −5.3% | |
2023 (est.) | 2,926 | −4.2% | |
Population sources: 1810–1920 1840 1850–1870 1850 1870 1880–1890 1890–1910 1910–1930 1940–2000 2000 2010 2020 * = Lost territory in previous decade |
In 2010, the 2010 United States census counted 3,055 people living in Knowlton Township. There were 1,097 households, which are groups of people living together. Most people (96%) were White. About 1% were Black or African American, and another 1% were Asian. A small number of people were Native American or from other backgrounds. About 3.6% of the population identified as Hispanic or Latino.
Who Lives Here?
About 33.5% of households had children under 18. Most households (66.5%) were married couples. The average household had 2.75 people. The average family had 3.10 people.
The median age in Knowlton Township was 44.8 years old. This means half the people were younger than 44.8, and half were older. About 23.3% of the population was under 18.
Education in Knowlton
Younger students in Knowlton Township attend the Knowlton Township Elementary School. This school serves children from pre-kindergarten through sixth grade. In the 2019–2020 school year, there were 155 students and 23 teachers. This means there were about 6.7 students for every teacher.
High School Students
Students in seventh through twelfth grade go to North Warren Regional High School. This high school is located in Blairstown. It serves students from Knowlton, Blairstown, Frelinghuysen, and Hardwick townships. In 2019–2020, the high school had 752 students and 69 teachers.
Other School Options
Students from Knowlton Township can also choose to attend other schools. The Ridge and Valley Charter School in Frelinghuysen Township is an option for grades K–8. Students from Knowlton get special preference for admission there. For high school, students can attend Warren County Technical School in Washington borough. This school offers technical and career training.
Recreation and Fun
Tunnel Field is the main place for outdoor activities in Knowlton Township. It has several fields for baseball, softball, and soccer. There's also a play area with swings, a basketball court, and a tennis court. You can also find a paved walking track and a snack stand. The field is located near Route 94. It's divided by an old railway line, but a tunnel connects the two parts, which is how it got its name.
Transportation and Roads

As of 2010, Knowlton Township had about 67.96 miles of roads. The township maintains most of these roads. The county and state also maintain some important roads.
Major Roads
Interstate 80 is a major highway that runs through the township for about 7.24 miles. It connects Knowlton to places further east in New Jersey and west in Pennsylvania. Many residents use I-80 to get to their jobs. Route 94 also passes through the northern part of the township. U.S. Route 46 runs through the southern part.
Bridges to Pennsylvania
Two bridges cross the Delaware River, connecting Knowlton Township to Pennsylvania. The Portland–Columbia Toll Bridge (part of Route 94) opened in 1953. It connects to Pennsylvania Route 611 in Portland, Pennsylvania. There's also the Portland–Columbia Pedestrian Bridge. This bridge was built in 1869 and is now used only by people walking or biking.

Places to Visit
- Brook Hollow Winery
- DeVille's Historic Texaco
Notable People from Knowlton
Many interesting people have connections to Knowlton Township. Here are a few:
- A. Elizabeth Adams (1892–1962), a zoologist and professor.
- Charles H. Flummerfelt (1863–1931), a politician who served in the state government of Washington.
- Cornelius Edward Gallagher (1921–2018), a politician who represented New Jersey in the U.S. House of Representatives.
- Philip Johnson (1818–1867), a politician who represented Pennsylvania in the U.S. House of Representatives.
- Jonathan Sonne, a professional Magic: The Gathering player.
- William Henry Witte (1817–1876), another politician who served in the U.S. House of Representatives from Pennsylvania.