How to Build a House in the Hillside

Hillside is a township in Union County, in the U.S. state of New Jersey. As of the 2020 United States census, the township's population was 22,456, an increase of 1,052 from the 2010 census count of 21,404, which in turn reflected a decline of 343 from the 21,747 counted in the 2000 census.
  • Elevation: 56 ft (17 m)
  • Country: United States
  • State: New Jersey
  • County: Union
  • Incorporated: April 29, 1913
  • ZIP Code: 07205
  • Area code(s): 908 and 973

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Data from: en.wikipedia.org