Covered Bridge Historic District

Green Sergeant's Covered Bridge is a wooden covered bridge over the Wickecheoke Creek near the border between the Hunterdon Plateau and Amwell Valley located in Delaware Township, Hunterdon County, New Jersey. As the last historic covered bridge in the state of New Jersey, it was listed on the National Register of Historic Places on November 19, 1974 for its significance in engineering and transportation (the Scarborough Bridge in Cherry Hill is the only other covered bridge in New Jersey). It was added as a contributing property to the Covered Bridge Historic District in 1999.

Delaware Township is a township in Hunterdon County, in the U.S. state of New Jersey. Part of the township is on the Hunterdon Plateau, while the southern portions are in the Amwell Valley. As of the 2020 United States census, the township's population was 4,560, a decrease of three people (−0.1%) from the 2010 census count of 4,563, which in turn reflected an increase of 85 (+1.9%) from the 4,478 counted in the 2000 census.The historic community of Sergeantsville is located within Delaware Township, as well as the unincorporated community of Raven Rock.

The Worman Road stone arch bridge over Shoppon's Run is a historic bridge located in Delaware Township in Hunterdon County, New Jersey, United States. Built in 1883, the stone arch bridge was added to the National Register of Historic Places on September 29, 2025, for its significance in engineering and transportation. It was listed as part of the Historic Bridges of Delaware Township, Hunterdon County, New Jersey Multiple Property Submission (MPS).

Sergeantsville is a historic unincorporated community located within Delaware Township, in Hunterdon County, in the U.S. state of New Jersey.Sergeantsville was first settled by a Mr. Thatcher in 1700, and was later named for Charles Sergeant, an American Revolutionary War soldier, in honor of the Sergeant family of which three brothers were local shopkeepers. "Out-of-towners give themselves away when they pronounce the first syllable 'sarge'; it's 'serge.'" Green Sergeant's Covered Bridge, constructed in 1872 across the Wickecheoke Creek, is located just west of Sergeantsville and is the oldest remaining covered bridge in New Jersey.Sergeantsville was officially created in 1827 when it became desirable to establish a post office. Until that time, this largely rural area was known as "Skunktown", perhaps because the town served as a market center for skunk pelts.Sergeantsville's annual "Thanksgiving in the Country" house tour, established in 1973, takes four or five different homes each year, that have historical, architectural or cultural qualities.

The Old Mill Road truss bridge over the Wickecheoke Creek is a historic Pratt truss bridge located in Delaware Township in Hunterdon County, New Jersey, United States. Built in 1899, it was added to the National Register of Historic Places on May 23, 2025, for its significance in engineering and transportation. It was listed as part of the Historic Bridges of Delaware Township, Hunterdon County, New Jersey Multiple Property Submission (MPS).

The Locktown–Sergeantsville Road truss bridge over Plum Brook is a historic Warren truss bridge located near Locktown in Delaware Township, Hunterdon County, New Jersey, United States. Built in 1922 by Snook and Sons, it was added to the National Register of Historic Places on March 24, 2025, for its significance in engineering and transportation. It was listed as part of the Historic Bridges of Delaware Township, Hunterdon County, New Jersey Multiple Property Submission (MPS).

Sandy Ridge is an unincorporated community located within Delaware Township in Hunterdon County, in the U.S. state of New Jersey. As its name implies, the community is located at the top of a small hill that is sandwiched between the Hunterdon Plateau and the Sourland Mountains. Sandy Ridge Road is the main road east and west through the community while County Route 605 is a minor arterial road that passes north and south through the area. CR 605 enters from the south on Sandy Ridge-Mt. Airy Road, jogs to the west on Sandy Ridge Road for 0.04 miles (64 m), and exits to the north on Cemetery Road towards CR 523. The area consists of mainly residences with some farmland and forestland. The Sandy Ridge Church (with adjacent cemetery) is a Baptist church founded in 1818 with its current building constructed in 1866 and is located in the center of Sandy Ridge.

The Lower Creek Road truss bridge over the Wickecheoke Creek is a historic Warren truss bridge located in Delaware Township in Hunterdon County, New Jersey, United States. Built around 1915, it was added to the National Register of Historic Places on May 23, 2025, for its significance in engineering and transportation. It was listed as part of the Historic Bridges of Delaware Township, Hunterdon County, New Jersey Multiple Property Submission (MPS).

Rosemont is an unincorporated community located within Delaware Township in Hunterdon County, in the U.S. state of New Jersey. Its ZIP code is 08556. Located at the top of a small hill, the center of the community is located along Kingwood Stockton Road (County Route 519) near its intersections with Raven Rock Rosemont Road and Rosemont Ringoes Road (CR 604). Farmland (for which it is listed on the National Register of Historic Places) and residences make up the surrounding area while the center of the settlement includes residences, a post office, and an antique shop.

Locktown is an unincorporated community located within Delaware Township in Hunterdon County, New Jersey, United States. The settlement is located in the northern portion of Delaware Township near its border with Kingwood Township and the Wickecheoke Creek. The surrounding area is very forested and rural but the settlement includes some historic churches including the Locktown Baptist Church. The church was listed on the National Register of Historic Places in 1974. The nearby Locktown–Sergeantsville Road truss bridge over Plum Brook was listed on the NRHP in 2025.

Locktown Baptist Church is a historic church in Locktown (Delaware Township), Hunterdon County, New Jersey, United States. It was built in 1819 and added to the National Register of Historic Places on February 15, 1974.

The District No. 98 Schoolhouse, also known as the Stockton School, is a historic school located at 19 South Main Street in the borough of Stockton in Hunterdon County, New Jersey. It was added to the National Register of Historic Places on January 12, 2005, for its significance in education.