Plainfield Armory

Netherwood is a New Jersey Transit railroad station on the Raritan Valley Line, in Plainfield, Union County, New Jersey, United States. It is located along North Avenue at the intersection of Netherwood Avenue and along South Avenue at the intersection of Belvedere Avenue. The station has a ticket vending machine, and the station house itself is located off of South Avenue.

Firehouse No. 4 is located in Plainfield, Union County, New Jersey, United States. The firehouse was built in 1910 and added to the National Register of Historic Places on March 11, 1993.

The Hillside Avenue Historic District is a 27-acre (11 ha) historic district located along Hillside Avenue in the city of Plainfield in Union County, New Jersey. It was added to the National Register of Historic Places on June 1, 1982 for its significance in architecture, featuring Colonial Revival architecture. The district includes 33 contributing buildings.

Grace Church or Grace Episcopal Church is a historic Episcopal church located at 600 Cleveland Avenue in Plainfield, Union County, New Jersey, United States. It was added to the National Register of Historic Places on May 10, 2002, for its significance in architecture, art, and music from 1892 to 1930.

The Plainfield Civic District is a 2-acre (0.81 ha) historic district located in the city of Plainfield in Union County, New Jersey. It was added to the National Register of Historic Places on June 17, 1993 for its significance in architecture, politics/government, and community planning. The district includes three contributing buildings and one contributing object.

Plainfield is a city in Union County, in the U.S. state of New Jersey. Nicknamed "The Queen City,", it serves as both a regional hub for Central New Jersey and a bedroom suburb of the New York Metropolitan area, located in the Raritan Valley region. As of the 2020 United States census, the city's population, majority Latino for the first time, was 54,586. This was an increase of 4,778 (+9.6%) from the 2010 census count of 49,808, which in turn reflected an increase of 1,979 (+4.1%) from the 47,829 counted in the 2000 census. In 2022, the Census Bureau estimated the city's population to be 54,513.The area of present-day Plainfield was originally formed as Plainfield Township, a township that was created on April 5, 1847, from portions of Westfield Township, while the area was still part of Essex County. On March 19, 1857, Plainfield Township became part of the newly created Union County.Plainfield was incorporated as a city by an act of the New Jersey Legislature on April 21, 1869, from portions of Plainfield Township, based on the results of a referendum held that same day. The city and township coexisted until March 6, 1878, when Plainfield Township was dissolved and parts were absorbed by Plainfield city, with the remainder becoming Fanwood Township (now known as Scotch Plains).The name "Plainfield", also used in both North Plainfield and South Plainfield, is derived from a local estate or from its scenic location.

Plainfield High School is a comprehensive community four-year public high school that serves students in ninth through twelfth grades from Plainfield, in Union County, in the U.S. state of New Jersey. The school is part of the Plainfield Public School District, one of New Jersey's 31 former Abbott districts. Plainfield High School was established in 1857, making it the second-oldest high school in New Jersey. The school has been accredited by the Middle States Association of Colleges and Schools Commission on Elementary and Secondary Schools since 1928.As of the 2021–22 school year, the school had an enrollment of 1,831 students and 129.0 classroom teachers (on an FTE basis), for a student–teacher ratio of 14.2:1. There were 1,219 students (66.6% of enrollment) eligible for free lunch and 190 (10.4% of students) eligible for reduced-cost lunch.

Young Women's Christian Association of Plainfield and North Plainfield is a historic building in Plainfield, Union County, New Jersey, United States. It was built in 1924 and as the name suggests intended to serve young women of both Plainfield and North Plainfield. The building was added to the National Register of Historic Places in 1998.

All Souls Church, also known as the First Unitarian Society of Plainfield, is located at 724 Park Avenue in the city of Plainfield in Union County, New Jersey, United States. Built in 1892, the historic stone church was added to the National Register of Historic Places on December 11, 2009, for its significance in architecture and religion.

The Plainfield Masonic Temple is located at 105 East 7th Street in the city of Plainfield in Union County, New Jersey, United States. Built in 1929 by Jerusalem Lodge No. 26 Free & Accepted Masons, the historic Neoclassical Revival style masonic temple was added to the National Register of Historic Places on September 16, 2024, for its significance in architecture.

The Orville T. Waring House is a historic building located at 900 Park Avenue in the city of Plainfield in Union County, New Jersey. Built in 1881, it was added to the National Register of Historic Places on May 14, 1979, for its significance in architecture, commerce, and industry. Orville Taylor Waring was an oil industry pioneer. The house was added as a contributing property to the Van Wyck Brooks Historic District on December 10, 1985.

Plainfield is a NJ Transit railroad station on the Raritan Valley Line, in Plainfield, Union County, New Jersey, United States. One of two train stations in Plainfield, this station serves the central part of the city. The ticket office and waiting area are in the south side station house (the eastbound platform). It was the westernmost station on the line with ADA accessibility, until Somerville's new high-level platforms were opened on December 7, 2010.