Washington Township is located in Morris County, NJ - about 45 miles west of NYC. The community has a total area of 44.9 square miles and has approximately 5,890 housing units. The Township has the distinction of occupying the largest area of any municipality in Morris County, NJ. The community has two major sections: Long Valley and Schooley's Mountain. Most of Washington Township has a Long Valley (07853) mailing address. However, some sections have a Califon (07830), Port Murray (07865), or Hackettstown (07840) mailing address. Washington Township borders Somerset, Warren, and Hunterdon Counties. The community is only minutes away from Interstate 80 in the neighboring community of Mount Olive and U.S. Route 206 in Chester Township. Washington Township is one of six municipalities in the state of NJ with the name Washington. It is often confused with Washington Township in Warren County NJ, which is about 10 miles away.

The Long Valley section - the heart of the township - is known for its beautiful farmland and features a small town center with shops and restaurants. Schooley's Mountain - rising about 600 feet above the valley - contains many housing developments and Schooley's Mountain Park. Due to its location on the west side of Morris County, furthest away from the employment centers to the east, Washington Township housing prices are relatively more affordable. Housing developments and neighborhoods include: Capital Estates, Wooded Valley, Fawnridge, Nestling Woods, Quail Ridge, Parker Acres, Brittany Hills, Fairmont, Merrybrook, Squire Hill, Kings Ridge, Yorkshire Estates, Harmony Hills, Musket Ridge, Squire Estates, Hidden Hills, Gentry Estates, Cambridge Estates, Rolling Green Hills, The Seasons, Woodbury Estates, Stonehedge, Stephensburg Ridge, Middlesworth Farms, Estates at Long Valley, Mountain Valley, Grandview Estates, Seven Oaks, North Bridge Estates, Hacklebarney, and Old Farmers.

U.S. Route 46, County Highway 513, and County Highway 517 pass through Washington Township. The neighboring community of Mount Olive has access to Interstate 80 for an eastbound commute. The neighboring community of Chester Township has access to County Highway 510 which travels east to Morristown.

The Washington Township Public School district includes Old Farmers Road School, which serves the southern section of the district in grades K-5, Walter J. Kossmann School for grades K-2, Flocktown Road School for grades 3-5, and Long Valley Middle School for grades 6-8. Benedict A. Cucinella Elementary School houses grades K-4 and opened in September of 2006. Students in grades 9-12 attend West Morris Central High School, which is located in Chester Township.

There are numerous parks located in Washington Township which include Califon Fields, Cobbleston Field, Palmer Park, Rock Spring Park, Schooley's Mountain Park, and the Long Valley Dog Park. Washington Township offers numerous sport clubs for adults and children including baseball, softball, track, cheerleading, basketball, badminton, lacrosse, ice hockey, rugby, and football. Schooley's Mountain Park has a recreational area with an overlook, a waterfall, and numerous hiking paths, as well as Lake George.