George A. Strong House

The Crescent Area Historic District is a 47-acre (19 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 December 12, 1980 for its significance in architecture, featuring Victorian houses built from 1870 to 1900. The district includes 111 contributing buildings.

The Van Wyck Brooks Historic District is a 99-acre (40 ha) historic district located in the city of Plainfield in Union County, New Jersey. Named after the author and literary critic Van Wyck Brooks, it was added to the National Register of Historic Places on December 10, 1985, for its significance in architecture. The district includes 109 contributing buildings. The Orville T. Waring House was added individually to the NRHP in 1979 and contributes to the district.

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 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.

Saint Mary's Catholic Church Complex is a historic Roman Catholic parish church located within the Archdiocese of Newark at Liberty and W. 6th Streets in the city of Plainfield in Union County, New Jersey, United States. The complex, including the church, rectory, convent and school, was added to the National Register on April 11, 1985, for its significance in architecture and religion.

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 Public School District is a comprehensive community public school district that serves students in kindergarten through twelfth grade from Plainfield, in Union County, New Jersey, United States. The district is 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.As of the 2018–19 school year, the district, comprising 13 schools, had an enrollment of 9,363 students and 615.4 classroom teachers (on an FTE basis), for a student–teacher ratio of 15.2:1.The district is classified by the New Jersey Department of Education as being in District Factor Group "B", the second lowest 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.

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.

Cedar Brook Park is a 78-acre (32 ha) county park in the city of Plainfield in Union County, New Jersey. Featuring the Shakespeare Garden, it was listed on the National Register of Historic Places on June 25, 2007, for its significance in landscape architecture. The park was designed by the Olmsted Brothers of Brookline, Massachusetts from 1924 to 1930. A small portion of the park extends into the borough of South Plainfield in Middlesex County.

Plainfield Central Fire Headquarters is located in Plainfield, Union County, New Jersey, United States. The firehouse was built in 1926 and added to the National Register of Historic Places on March 4, 1993.

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.

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.