Brass Castle, New Jersey

The Warren County Technical School District is a technical and vocational public school district serving students in ninth through twelfth grades, along with programs for adult learners, located in Washington borough, and serving the entire community of Warren County, New Jersey, United States. As of the 2015-16 school year, the district and its one school had an enrollment of 478 students and 43.5 classroom teachers (on an FTE basis), for a student–teacher ratio of 10.99:1.The district offers "a comprehensive high school education, athletics, and student life found at a traditional high school setting with the added focus of vocational and career training based on current industry standards"

Warren County Community College (WCCC) is a public community college in Warren County, New Jersey. Its campus is in Washington Township.

Warren County Technical School (WCTS) is a technical and vocational public high school located in Washington, which serves students in ninth through twelfth grades as well as adult learners from across Warren County, United States, as part of the Warren County Technical School District. The school has been accredited by the Middle States Association of Colleges and Schools Commission on Elementary and Secondary Schools since 1996.As of the 2021–22 school year, the school had an enrollment of 440 students and 36.8 classroom teachers (on an FTE basis), for a student–teacher ratio of 12.0:1. There were 71 students (16.1% of enrollment) eligible for free lunch and 16 (3.6% of students) eligible for reduced-cost lunch.In addition to students in its full-time high school programs, the school also serves 150 adult students in the fields of Licensed Practical Nursing, Cosmetology, HVAC, Welding, and Black Seal Certification.

The Washington Township School District is a community public school district that serves students in pre-kindergarten through sixth grade from Washington Township, in Warren County, New Jersey, United States.As of the 2018–19 school year, the district, comprised of two schools, had an enrollment of 422 students and 46.0 classroom teachers (on an FTE basis), for a student–teacher ratio of 9.2:1.The district is classified by the New Jersey Department of Education as being in District Factor Group "GH", the third-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 seventh through twelfth grades attend the schools of the Warren Hills Regional School District, which also serves students from the municipalities of Franklin Township, Mansfield Township and Washington Borough, along with those from Oxford Township who attend for grades 9-12 only. Schools in the district (with 2018–19 enrollment data from the National Center for Education Statistics) are Warren Hills Regional Middle School located in Washington Borough with 542 students in grades 7-8 and Warren Hills Regional High School located in Washington Township with 1,205 students in grades 9-12.

Pleasant Valley is an unincorporated community located in Washington Township, Warren County, New Jersey, west of Washington, along the Pohatcong Creek. The hamlet was built around a mill on the creek during the mid-18th century. The Pleasant Valley Historic District, encompassing the village, is listed on the state and national registers of historic places.

Pohatcong Creek (also called the Pohatcong River) is a 30.7-mile-long (49.4 km) tributary of the Delaware River in northwestern New Jersey in the United States. It rises in the mountains of eastern Warren County, west of Hackettstown. It flows southwest, in a valley along the northwestern side of the Pohatcong Mountain ridge, which separates its watershed from that of the Musconetcong River. It joins the Delaware in Pohatcong Township, approximately 5 miles (8 kilometers) south of Phillipsburg. The name Pohatcong is said to have thought of a Munsee phrase — pohwihtukwung, or "at the rippling or lapping river".

The Warren Hills Regional School District is comprehensive public school district located in Warren County, New Jersey, United States, that serves seventh grade through twelfth grades. The district includes students from the municipalities of Franklin Township, Mansfield Township, Washington Borough and Washington Township, while students from Oxford Township attend the district's high school for grades 9-12 as part of a sending/receiving relationship.As of the 2020–21 school year, the district, comprised of two schools, had an enrollment of 1,745 students and 156.8 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 "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.Both Warren Hills Regional Middle School and Warren Hills Regional High School are accredited through the Middle States Association of Colleges and Schools through the Excellence by Design protocols.

The Pohatcong Valley Groundwater Contamination superfund site is located in Warren County, Franklin Township, Washington Township, and Washington Borough in New Jersey. It was recognized in the 1970s but not designated into the National Priorities List until 1989. It is a contamination of the Kittany Limestone Aquifer underlying the Pohatcong Valley. This toxic site stretches across 9,800 acres of land. The chemicals that are polluting the groundwater and soil are trichloroethylene (TCE) and perchloroethylene (PCE). If someone were to be exposed to these harmful toxins for a short amount of time it can result in unconsciousness. Long term effects unfortunately include liver and kidney problems. The plans to clean up this superfund site are costing the companies involved, Pechiney Public Packaging Inc., Bristol Meyers Squibb Company, Albea Americas Inc, and Citigroup Inc, about $92 million, and the situation still has not been completely resolved.

Bowerstown is an unincorporated community in Washington Township, Warren County, New Jersey near the Morris Canal and the Pohatcong Creek. It was founded in 1829 by Jesse Vanetta and Michael B. Bowers with the building of an iron foundry. The Bowerstown Historic District, encompassing the village, was listed on the state and national registers of historic places in 1996.

Pohatcong Mountain is a ridge, approximately 6 mi (10 km) long, in the Appalachian Mountains of northwestern New Jersey in the United States. It extends from west Phillipsburg northeast approximately to Allamuchy Township, New Jersey. The ridge continues on north past Washington as Upper Pohatcong Mountain. It is located in eastern Warren County, and extends northeast of Washington approximately 6 mi (10 km) to the vicinity of Hackettstown. The ridge has an average height of approximately 800 ft (240 m) and reaches a maximum summit of 1235 ft (374 m).The term "Pohatcong Mountain" is sometimes taken to include both Pohatcong and Upper Pohatcong Mountain. The ridge is approximately 800 ft (244 m) high along much of its length. The mountain divides the watersheds of Pohatcong Creek on its northwestern flank and the Musconetcong River on its southeastern flank.

Broadway is an unincorporated community and census-designated place (CDP) located within Franklin 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, the CDP's population was 244.

The Washington Borough Public Schools is a community public school district that serves students in kindergarten through sixth grade from Washington Borough, in Warren County, New Jersey, United States.As of the 2018–19 school year, the district, comprised of two schools, had an enrollment of 481 students and 44.6 classroom teachers (on an FTE basis), for a student–teacher ratio of 10.8:1.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.Students in public school for seventh through twelfth grades attend the Warren Hills Regional School District, which serves students from Washington Borough, along with those from Franklin Township, Mansfield Township and Washington Township, as well as students from Oxford Township (for 9-12 only, attending on a tuition basis). Schools in the district (with 2018–19 enrollment data from the National Center for Education Statistics) are Warren Hills Regional Middle School located in Washington Borough with 542 students in grades 7-8 and Warren Hills Regional High School located in Washington Township with 1,205 students in grades 9-12.