A.O. Polymer Superfund Site

Sparta is a township in Sussex County in the U.S. state of New Jersey. As of the 2020 United States census, the township's population was 19,600, a decrease of 122 (−0.6%) from the 2010 census count of 19,722, which in turn reflected an increase of 1,642 (+9.1%) from the 18,080 counted in the 2000 census.Sparta was organized as a township by an act of the New Jersey Legislature on April 14, 1845, from portions of Byram Township, Frankford Township, Hardyston Township and (the now-defunct) Newton Township. The township was named after the existing community of Sparta, which had been settled and named years before, the name likely coming from Sparta, Greece. Ogdensburg borough was incorporated on February 26, 1914, from portions of Sparta Township.The township was listed as the safest place in New Jersey as well as the seventh safest municipality in the nation according to a 2022 crime statistic compilation from Safewise.com.

Sparta High School is a four-year comprehensive community public high school serving students in ninth through twelfth grades from Sparta, in Sussex County, in the U.S. state of New Jersey, operating as the lone secondary school of the Sparta Township Public School District. As of the 2021–22 school year, the school had an enrollment of 1,065 students and 98.7 classroom teachers (on an FTE basis), for a student–teacher ratio of 10.8:1. There were 28 students (2.6% of enrollment) eligible for free lunch and 11 (1.0% of students) eligible for reduced-cost lunch.

The Sparta Mountains are a range of the New York-New Jersey Highlands region of the Appalachian Mountains. The summit, reaching a height of 1,230 feet (375 metres), lies within Sussex County, New Jersey.

The Sparta Township Public School District is a comprehensive community public school district that serves students in pre-kindergarten through twelfth grade from Sparta, in Sussex County, in the U.S. state of New Jersey.As of the 2021–22 school year, the district, comprised of five schools, had an enrollment of 3,236 students and 290.6 classroom teachers (on an FTE basis), for a student–teacher ratio of 11.1:1.The district is classified by the New Jersey Department of Education as being in District Factor Group "I", the second highest of eight groupings. District Factor Groups organize districts statewide to allow comparison by common socioeconomic characteristics of the local districts. From lowest socioeconomic status to highest, the categories are A, B, CD, DE, FG, GH, I and J.

The Pimple Hills are a range of the New York-New Jersey Highlands region of the Appalachian Mountains. The summit, reaching a height of 1,122 feet (342 m), lies within Sussex County, New Jersey.

Pope John XXIII Regional High School is a Roman Catholic high school in Sparta, in Sussex County, in the U.S. state of New Jersey. The school was founded in 1956, originally as Our Lady Of The Lake School and is part of the Roman Catholic Diocese of Paterson. The school name was changed to honor Pope John XXIII after his death in 1963. The school has been accredited by AdvancEd since 2010.As of the 2019–20 school year, the school had an enrollment of 667 students and 58.1 classroom teachers (on an FTE basis), for a student–teacher ratio of 11.5:1.In 2016, grades 5-7 at the Rev. George A. Brown Elementary School were moved into the newly built Pope John XXIII Middle School, which shares its campus with the high school. To do this the schools of Immaculate Conception Regional School (in Franklin), Saint Joseph's Regional School (in Newton) and Saint Michael's Regional School (in Netcong) were all closed and merged into Pope John Middle School.

Sterling Hill is a mountain in Sussex County, New Jersey. The peak rises to 833 feet (254 m), and overlooks the Wallkill River and Ogdensburg to the southeast. It is part of the Pimple Hills.

The Sterling Hill Mine, now known as the Sterling Hill Mining Museum, is a former zinc mine in Ogdensburg, Sussex County, New Jersey, United States. It was the last working underground mine in New Jersey. It closed in 1986, and became a museum in 1989. Along with the nearby Franklin Mine, it is known for its variety of minerals, especially the fluorescent varieties. It was added to the National Register of Historic Places in 1991.

Ogdensburg is a borough in Sussex County, in the U.S. state of New Jersey. As of the 2020 United States census, the borough's population was 2,258, a decrease of 152 (−6.3%) from the 2010 census count of 2,410, which in turn reflected a decline of 228 (−8.6%) from the 2,638 counted in the 2000 census.The borough was formed based on an Act of the New Jersey Legislature on February 26, 1914, from part of Sparta Township, subject to the results of a referendum held on March 31, 1914. Ogdensburg is named after its first settler, Robert Ogden.New Jersey Monthly magazine ranked Ogdensburg as its 27th best place to live in its 2008 rankings of the "Best Places To Live" in New Jersey.

Backwards Tunnel, also known as the Ogdensburg Railroad Arch, is located in Ogdensburg, Sussex County, New Jersey, United States. The tunnel was added to the National Register of Historic Places on December 28, 2005.

The Ogdensburg Borough School District is a comprehensive community public school district that serves students in pre-kindergarten through eighth grade from Ogdensburg, in Sussex County, New Jersey, United States.As of the 2018–19 school year, the district, comprising one school, had an enrollment of 236 students and 23.5 classroom teachers (on an FTE basis), for a student–teacher ratio of 10.0:1.The district is classified by the New Jersey Department of Education as being in District Factor Group "FG", the fourth-highest of eight groupings. District Factor Groups organize districts statewide to allow comparison by common socioeconomic characteristics of the local districts. From lowest socioeconomic status to highest, the categories are A, B, CD, DE, FG, GH, I and J.For ninth through twelfth grades, public school students attend Wallkill Valley Regional High School which also serves students from Franklin Borough, Hardyston Township and Hamburg Borough. As of the 2018–19 school year, the high school had an enrollment of 604 students and 56.0 classroom teachers (on an FTE basis), for a student–teacher ratio of 10.8:1.

The Sussex County Vocational School District is a county-wide vocational public school district located in Sparta Township serving students in ninth through twelfth grades and adult students from Sussex County, New Jersey, United States.As of the 2018–19 school year, the district, comprised of one school, had an enrollment of 761 students and 62.0 classroom teachers (on an FTE basis), for a student–teacher ratio of 12.3:1.