Midland Park is a borough in Bergen County, New Jersey, United States. As of the 2010 United States Census, the borough's population was 7,128, reflecting an increase of 181 (+2.6%) from the 6,947 counted in the 2000 Census, which had in turn declined by 100 (-1.4%) from the 7,047 counted in the 1990 Census.
Midland Park was incorporated as a borough on September 6, 1894, at the height of the "Boroughitis" craze then sweeping through Bergen County that led to the creation of over two dozen new municipalities in the county in that one year alone. The new borough consisted of portions of both Franklin Township and Ridgewood Township. The borough expanded in April 1920 by adding another part of Franklin Township. In a referendum held on June 9, 1931, Midland Park acquired additional land from Wyckoff Township (which until 1926 had been known as Franklin Township). The borough says that Midland Park was named after the New Jersey Midland Railway, which operated the railroad passing through the area of the borough in the 1870s, though elsewhere the name is said to be based on being situated "amid Bergen hills".
According to the United States Census Bureau, the borough had a total area of 1.563 square miles (4.049 km2), including 1.555 square miles (4.028 km2) of land and 0.008 square miles (0.021 km2) of water (0.52%).
Unincorporated communities, localities and place names located partially or completely within the township include Wortendyke.
The borough borders the Bergen County municipalities of Ridgewood, Waldwick and Wyckoff.
The borough is divided by Prospect Street, a main road running north–south through the center of the town. Prospect Street is the southernmost end of what is otherwise known as Crescent Avenue (or West Crescent Avenue), which runs through Ramsey, Allendale, and Wyckoff.
Northside borders Waldwick and is the location of Midland Park High School. The Catholic church, Nativity, is also located on the Northside of the borough.
Park Wood is located on the east side of Midland Park.