Thetford Hill Historic District

Thetford Academy is a coeducational independent school in Thetford, Vermont. Located at 304 Academy Road in Thetford Center, Vermont, it is the state's oldest secondary school. Thetford Academy celebrated its bicentennial year in 2018–2019. An historic New England Town Academy (one of approximately 20 remaining in Vermont, New Hampshire, Maine, and Connecticut), Thetford Academy serves as the designated public school for the town of Thetford. The academy also has partnership agreements with the town of Lyme, New Hampshire, and serves several towns that provide students a choice of high schools, or do not have a high school of their own. Thetford Academy also hosts a small contingent of international students from countries including China, South Korea, Greece, and Rwanda. In the 2022–2023 school year, Thetford Academy had 312 students enrolled in grades 7–12.

Thetford Hill State Park is a state park in Thetford, Vermont. It is a day-use park within the southern tract of Thetford Hill State Forest. The park includes paths for hiking and the 5-km Woods Hill Trail, a world-class cross-country running and skiing trail. Activities includes hiking, cross-country running and cross-country skiing. The park was listed on the National Register of Historic Places in 2002 for its historic facilities, some of which were developed by the Civilian Conservation Corps. It is currently under the care of Thetford Academy.

Thetford is a town in Orange County, Vermont, United States in the Connecticut River Valley. The population was 2,775 at the 2020 census. Villages within the town include East Thetford, North Thetford, Thetford Hill, Thetford Center, Rices Mills, Union Village, and Post Mills. The town office is in Thetford Center. Thetford is home to Thetford Academy, Vermont's oldest secondary school. Girl Scouts of the Green and White Mountains, formerly Swift Water Girl Scout Council, also has a summer residential camp here called Camp Farnsworth. Camp Farnsworth originally started under private ownership by Chelebe and Madama Farnsworth in 1909 when it was called Camp Hanoum.

The Thetford Center Historic District encompasses the village of Thetford Center in Thetford, Vermont. The village contains a well-preserved collection of early to mid-19th century architecture, a legacy of its period of greatest prosperity as an agricultural and industrial center. It was listed on the National Register of Historic Places in 1998.

The Thetford Center Covered Bridge is a historic covered bridge, carrying Tucker Hill Road across the Ompompanoosuc River in Thetford, Vermont. It is the state's only known example of the Haupt patent truss system. It was listed on the National Register of Historic Places in 1974.

The Union Village Covered Bridge is a historic covered bridge, carrying Academy Road across the Ompompanoosuc River in Union Village, Thetford, Vermont. Built in 1867, it is the state's longest 19th-century multiple kingpost truss bridge. It was listed on the National Register of Historic Places in 1974.

Union Village is a village that spans Norwich and Thetford, Vermont, and sits along the Ompompanoosuc River. It contains a small cluster of homes with many dating to the early 1800s, a red brick Methodist Episcopal church built in 1836, a covered bridge, a small defunct school house, and a United States Army Corps of Engineers flood control dam.

The Lyme–East Thetford Bridge is a historic bridge over the Connecticut River between Lyme, New Hampshire, and East Thetford, Vermont. From the New Hampshire side it carries East Thetford Road, which becomes Vermont Route 113 as it enters Vermont. A Parker truss bridge completed in 1937, it is 471 feet (144 m) long. The bridge was added to the National Register of Historic Places in 2020.

North Thetford is an unincorporated village in the town of Thetford, Orange County, Vermont, United States. The community is located along the Connecticut River and U.S. Route 5, 11 miles (18 km) north-northeast of Hanover, New Hampshire. North Thetford has a post office, with ZIP code 05054.

The Ompompanoosuc River is a river, about 25 mi (40 km) long, in eastern Vermont in the United States. It is a tributary of the Connecticut River, which flows to Long Island Sound. According to the Geographic Names Information System, the river has also been known by the names "Om-pom-pa-noos-uc" and "Pompanoosuc."The Ompompanoosuc River rises in eastern Orange County in the town of Vershire, and flows generally southwardly through the towns of West Fairlee and Thetford into northeastern Windsor County, where it joins the Connecticut River in the village of Pompanoosuc which is located in the town of Norwich.In Thetford, the river is dammed by the Union Village Dam, which was built from 1946 to 1950 as part of a U.S. Army Corps of Engineers project for flood control. The structure is a 170-foot-high earthen dam, creating a seasonal lake in the winter.The West Branch Ompompanoosuc River flows generally southeastwardly through the towns of Vershire and Strafford to Thetford, where it joins the main stem of the river.

Vermontasaurus is a 25-foot-tall (7.6 m), 122-foot-long (37 m) folk art representation of a dinosaur at the Post Mills Airport in the town of Thetford, Vermont.

Lyme is a town along the Connecticut River in Grafton County, New Hampshire, United States. The population was 1,745 as of the 2020 census. Lyme is home to the Chaffee Natural Conservation Area. The Dartmouth Skiway is in the eastern part of town, near the village of Lyme Center. The Appalachian Trail passes through the town's heavily wooded eastern end.