Mendham Borough, New Jersey

Mendham Borough, New Jersey
Historic Thompson House c.1970
Location of Mendham Borough in Morris County highlighted in red (right). Inset map: Location of Morris County in New Jersey highlighted in orange (left).
Census Bureau map of Mendham Borough, New Jersey
Mendham
Location in Morris County
Mendham
Location in New Jersey
Mendham
Location in the United States
Coordinates: 40°46′02″N 74°35′52″W / 40.76729°N 74.597766°W / 40.76729; -74.597766
Country United States
State New Jersey
County Morris
IncorporatedMay 15, 1906
Government
  TypeBorough
  BodyBorough Council
  MayorNeil Sullivan (R, on acting basis for term ending December 31, 2026)
  AdministratorJoyce Bushman
  Municipal clerkLauren McBride (acting)
Area
  Total
5.98 sq mi (15.49 km2)
  Land5.93 sq mi (15.36 km2)
  Water0.05 sq mi (0.13 km2)  0.84%
  Rank257th of 565 in state
23rd of 39 in county
Elevation
522 ft (159 m)
Population
 (2020)
  Total
4,981
  Estimate 
(2023)
4,970
  Rank375th of 565 in state
31st of 39 in county
  Density839.9/sq mi (324.3/km2)
   Rank403rd of 565 in state
30th of 39 in county
Economics
  Median income$212,550 (±36,738) (2022)
Time zoneUTC−05:00 (Eastern (EST))
  Summer (DST)UTC−04:00 (Eastern (EDT))
ZIP Code
07945
Area code(s)908 and 973
FIPS code34-45330
GNIS feature ID0885296
Websitewww.mendhamnj.org

Mendham Borough is a borough in southwestern Morris County, in the U.S. state of New Jersey. As of the 2020 United States census, the borough's population was 4,981, unchanged from the 2010 census, which in turn reflected a decline of 116 (−2.3%) from the 5,097 counted in the 2000 census. Located in the Raritan Valley region within the New York metropolitan area, the North Branch of the Raritan River begins in Mendham Borough and flows in a southwest direction towards neighboring Somerset County.

Located on the northern end of the Somerset Hills region, the borough is known for its country homes and historic downtown.

The Mendham Historic District was listed on the National Register of Historic Places and the state register in 1985. Notable landmarks in the district include the Phoenix House, which serves as the borough's municipal building, along with the Black Horse Inn Tavern & Pub; New Jersey’s oldest continually operating restaurant, dating back to 1742.

New Jersey Monthly magazine ranked Mendham Borough as the number one place to live in the state in its 2013 rankings of the "Best Places to Live" in New Jersey.

In the Forbes magazine's 2006 (209th; median sale price of $835,000) and 2012 (356th; $800,672) rankings of the Most Expensive ZIP Codes in the United States, Mendham was listed among the top 500 nationwide. In 2018, New Jersey Business Magazine listed Mendham at 41st in its listing of "The Most Expensive ZIP Codes in New Jersey", with a median sale price 2017 of $650,000.

Along with Mendham Township, the Mendhams have been described by The New York Times as "both affluent". The borough is one of the state's highest-income communities. Based on data from the American Community Survey (ACS) for 2014–2018, Mendham Borough residents had a median household income of $158,542, almost double the statewide median of $79,363.