Middlesex, New Jersey

Middlesex, New Jersey
Victor Crowell Park, featuring the duck pond
Location of Middlesex in Middlesex County highlighted in red (left). Inset map: Location of Middlesex County in New Jersey highlighted in orange (right).
Census Bureau map of Middlesex, New Jersey
Middlesex
Location in Middlesex County
Middlesex
Location in New Jersey
Middlesex
Location in the United States
Coordinates: 40°34′29″N 74°29′54″W / 40.574627°N 74.498259°W / 40.574627; -74.498259
Country United States
State New Jersey
CountyMiddlesex
IncorporatedApril 9, 1913
Named afterMiddlesex, England
Government
 • TypeBorough
 • BodyBorough Council
 • MayorJack Mikolajczyk (R, term ends December 31, 2027)
 • AdministratorMatthew Geist (interim)
 • Municipal clerkKelsey Meixner
Area
 • Total
3.51 sq mi (9.09 km2)
 • Land3.49 sq mi (9.03 km2)
 • Water0.023 sq mi (0.06 km2)  0.63%
 • Rank315th of 565 in state
16th of 25 in county
Elevation
39 ft (12 m)
Population
 (2020)
 • Total
14,636
 • Estimate 
(2023)
14,461
 • Rank181st of 565 in state
18th of 25 in county
 • Density4,196.1/sq mi (1,620.1/km2)
  • Rank147th of 565 in state
12th of 25 in county
Time zoneUTC−05:00 (Eastern (EST))
 • Summer (DST)UTC−04:00 (Eastern (EDT))
ZIP Code
08846
Area code732
FIPS code3402345900
GNIS feature ID0885299
Websitewww.middlesexboro-nj.gov

Middlesex is a borough in Middlesex County, in the U.S. state of New Jersey. It is located within the Raritan Valley region. As of the 2020 United States census, the borough's population was 14,636, its highest decennial count and an increase of 1,001 (+7.3%) from the 2010 census count of 13,635, which in turn reflected a decline of 82 (−0.6%) from the 13,717 counted in the 2000 census.

Middlesex was incorporated as a borough by an act of the New Jersey Legislature on April 9, 1913, from portions of Piscataway, based on the results of a referendum held on May 6, 1913. The borough was named after Middlesex, England.