Warren County Farmers' Fair Balloon Festival

Lopatcong Township () is a rapidly growing township in Warren County, within the U.S. state of New Jersey. As of the 2020 United States census, the township's population was 8,776, an increase of 762 (+9.5%) from the 2010 census count of 8,014, which in turn reflected an increase of 2,249 (+39.0%) from the 5,765 counted in the 2000 census.

The Harmony Township School District is a comprehensive community public school district that serves students in pre-kindergarten through eighth grade from Harmony Township, in Warren County, New Jersey, United States.As of the 2021–22 school year, the district, comprised of one school, had an enrollment of 200 students and 30.0 classroom teachers (on an FTE basis), for a student–teacher ratio of 6.7:1.The district is classified by the New Jersey Department of Education as being in District Factor Group "DE", the fifth-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.Public school students in ninth through twelfth grades attend Belvidere High School, together with students from Hope Township and White Township, as part of sending/receiving relationships with the Belvidere School District. As of the 2021–22 school year, the high school had an enrollment of 357 students and 32.3 classroom teachers (on an FTE basis), for a student–teacher ratio of 11.1:1.

Marble Mountain is a mountain in Warren County, New Jersey. The summit rises to 771 feet (235 m), and is located in Harmony and Lopatcong Townships, overlooking the Delaware River; along with Chestnut Hill on the Pennsylvania side, Marble Mountain forms Weygadt Gap or the Little Water Gap.It is part of the New York–New Jersey Highlands of the Appalachian Mountains, although somewhat isolated to the west of the main body of the Highlands.

The Lopatcong Township School District is a comprehensive community public school district that serves students in pre-kindergarten through eighth grade from Lopatcong Township, in Warren County, in the U.S. state of New Jersey.As of the 2021–22 school year, the district, comprised of two schools, had an enrollment of 707 students and 58.0 classroom teachers (on an FTE basis), for a student–teacher ratio of 12.2:1.The district is classified by the New Jersey Department of Education as being in District Factor Group "DE", the fifth-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.Public school students in ninth through twelfth grades attend Phillipsburg High School in Phillipsburg as part of a sending/receiving relationship with the Phillipsburg School District. The high school also serves students from four other sending communities: Alpha, Bloomsbury (in Hunterdon County), Greenwich Township and Pohatcong Township. The site of the new Phillipsburg High School, which began construction in January 2014, is in Lopatcong's borders. The three-story, 330,000-square-foot (31,000 m2) building, with more than double the floor space of the existing high school and a capacity to accommodate more than 2,100 students, was completed for the 2016–17 school year and was dedicated in September 2016 at ceremonies attended by Governor of New Jersey Chris Christie. As of the 2021–22 school year, the high school had an enrollment of 1,809 students and 133.5 classroom teachers (on an FTE basis), for a student–teacher ratio of 13.6:1.

Harmony is an unincorporated community and census-designated place (CDP) located within Harmony Township in Warren County, in the U.S. state of New Jersey, that was defined as part of the 2010 United States Census. As of the 2010 Census, the CDP's population was 441.

Lopatcong Overlook is an unincorporated community and census-designated place (CDP) located within Lopatcong Township, in Warren County, in the U.S. state of New Jersey, that was created as part of the 2010 United States Census. As of the 2010 Census, Lopatcong Overlook's population was 734.

Harmony Township is a township located in Warren County in the U.S. state of New Jersey. As of the 2020 United States census, the township's population was 2,503, a decrease of 164 (−6.1%) from the 2010 census count of 2,667, which in turn reflected a decline of 62 (−2.3%) from the 2,729 counted in the 2000 census.Harmony was incorporated as a township by an act of the New Jersey Legislature on April 8, 1839, from portions of Greenwich Township and Oxford Township, based on the results of a referendum held that day. Phillipsburg Township was created March 7, 1851, from portions of the township. The township was named for Harmon Shipman, an early settler.

Upper Stewartsville is an unincorporated community and census-designated place (CDP) located within Greenwich Township in Warren County, in the U.S. state of New Jersey, that was defined as part of the 2010 United States Census. As of the 2010 Census, the CDP's population was 212.

Phillipsburg High School is a comprehensive, four-year public high school located in Phillipsburg, in Warren County, in the U.S. state of New Jersey. The school was first established in 1871. For this reason, the school's nickname is the "Stateliners." The school has been accredited by the Middle States Association of Colleges and Schools Commission on Elementary and Secondary Schools since 2000.The school is part of the Phillipsburg School District, one of 31 former Abbott districts statewide that were established pursuant to the decision by the New Jersey Supreme Court in Abbott v. Burke which are now referred to as "SDA Districts" based on the requirement for the state to cover all costs for school building and renovation projects in these districts under the supervision of the New Jersey Schools Development Authority. The district serves students from Phillipsburg and from five other municipalities: Alpha, Bloomsbury (in Hunterdon County), Greenwich Township, Lopatcong Township and Pohatcong Township, who attend as part of sending/receiving relationships.The site of the new Phillipsburg High School, which began construction in January 2014, is in Lopatcong Township. The three-story, 330,000-square-foot (31,000 m2) building, with more than double the floor space of the existing high school and a capacity to accommodate more than 2,100 students, was completed for the 2016–17 school year and was dedicated in September 2016 at ceremonies attended by Governor of New Jersey Chris Christie. Phillipsburg High School's enrollment had been in excess of the school's capacity. To compensate for this, the Phillipsburg School District purchased or leased 31 trailers. As of the 2021–22 school year, the school had an enrollment of 1,809 students and 133.5 classroom teachers (on an FTE basis), for a student–teacher ratio of 13.6:1. There were 429 students (23.7% of enrollment) eligible for free lunch and 36 (2.0% of students) eligible for reduced-cost lunch.

Phillipsburg Mall was an indoor shopping mall located along U.S. Route 22 in Warren County, New Jersey, United States. Despite its name, the mall was actually located on the border of Lopatcong Township and Pohatcong Township, just east of Phillipsburg. The mall was located on the eastern edge of the Lehigh Valley, the metropolitan area of Allentown, Pennsylvania. The mall's anchor store was Kohl's. There were 3 other anchor stores that were once The Bon-Ton, Sears, and Black Rose Antiques & Collectibles. As of February 2021, the mall is scheduled to be demolished in the near future.

Greenwich is an unincorporated community and census-designated place (CDP) located within Greenwich Township in Warren County, in the U.S. state of New Jersey, that was defined as part of the 2010 United States Census. As of the 2010 Census, the CDP's population was 2,755.

Phillipsburg Catholic High School was a parochial high school in Phillipsburg, New Jersey. It was operated by the Roman Catholic parish of Saints Philip and James Church in Phillipsburg.