Dillonvale, Jefferson County, Ohio

Olszeski Town (previously also known as Mount Pleasant) is an unincorporated community in Mount Pleasant Township, Jefferson County, Ohio, United States. It is located between Dillonvale and Dunglen along County Route 7 and Short Creek, at 40°11′40″N 80°47′19″W.

Deyarmonville is an unincorporated community in Jefferson County, in the U.S. state of Ohio.Deyarmonville once had a one-room schoolhouse.

Mount Pleasant Township is one of the fourteen townships of Jefferson County, Ohio, United States. The 2020 census found 2,191 people in the township.

Dunglen is an unincorporated community in Jefferson County, in the U.S. state of Ohio.

The Mount Pleasant Historic District encompasses the historic center of the village of Mount Pleasant, Ohio. Founded in 1803 by anti-slavery Quakers, the village was an early center of abolitionist activity and a well-known haven for fugitive slaves on the Underground Railroad. The village center is relatively little altered since the antebellum period. The district was listed on the National Register of Historic Districts in 1974, and was designated a National Historic Landmark in 2005.

Mount Pleasant is a village in southern Jefferson County, Ohio, United States. The population was 394 at the 2020 census. It is part of the Weirton–Steubenville metropolitan area. Founded in 1803 by anti-slavery Quakers, the village was an early center of abolitionist activity and a well-known haven for fugitive slaves on the Underground Railroad.

The Benjamin Lundy House is a historic house at Union and Market Streets in Mount Pleasant, Ohio. It was home in 1820 to abolitionist Benjamin Lundy (1789–1839), where he established the influential antislavery newspaper The Genius of Universal Emancipation, one of the first antislavery publications in the United States. It was designated a National Historic Landmark in May 1974, and included in the Mount Pleasant Historic District later the same year.

Friends Meetinghouse is a historic Quaker meeting house near OH 150 in the village of Mount Pleasant, Ohio. It was built in 1814 and added to the National Register of Historic Places in 1970 and was the first Quaker yearly meeting house west of the Alleghenies. Mount Pleasant, named a National Historic Landmark District for its association with the antislavery movement in the years leading up to the American Civil War, is home to five documented Underground Railroad "stations." The village celebrated its 200th anniversary with tours, special displays and programs on Saturday, Aug. 2 and Sunday, Aug. 3, 2014. On Saturday, Aug. 2, there was a special program in the 1814 Quaker Meeting House with The Hon. John D. Ong, former U.S. Ambassador to the Kingdom of Norway and descendant of Jacob Ong (1760–1849), the Meeting House "carpenter" or in modern terms contractor. Jacob Ong was a minister and was remembered by a friend thus: 'He usually had a message for the people, his theme was always love. In the earnestness of his soul he would deliver the message, while tears would trickle down his furrowed cheeks. Trembling from head to foot, he would exhort young and old to love the Lord and one another.'"The building is now owned by the Ohio Historical Society and managed by the Mount Pleasant Historical Society as the Quaker Yearly Meeting House.

Bradley is an unincorporated community in Jefferson County, in the U.S. state of Ohio.

Emerson is an unincorporated community in Jefferson County, in the U.S. state of Ohio. Emerson is usually considered to be the area that runs from the border of Mount Pleasant, Ohio to the junction between Route 250 and Route 150, and then when both Jefferson and Belmont 5 run into Pleasant Grove, Ohio on Route 250, and then finally when Township Road 128 splits into both the latter and Pinewood Drive, which then runs into Harrisville, Ohio.

Smithfield Township is one of the fourteen townships of Jefferson County, Ohio, United States. The 2020 census found 3,011 people in the township.