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Union County, New Jersey facts for kids

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Union County
Downtown Westfield in July 2005
Downtown Westfield in July 2005
Flag of Union County
Flag
Official seal of Union County
Seal
Map of New Jersey highlighting Union County
Location within the U.S. state of New Jersey
Map of the United States highlighting New Jersey
New Jersey's location within the U.S.
Country  United States
State  New Jersey
Founded 1857
Named for Union threatened by slavery dispute
Seat Elizabeth
Largest city Elizabeth (population and area)
Area
 • Total 105.41 sq mi (273.0 km2)
 • Land 102.77 sq mi (266.2 km2)
 • Water 2.64 sq mi (6.8 km2)  2.5%
Population
 (2020)
 • Total 575,345
 • Estimate 
(2024)
594,160 Increase
 • Density 5,458.16/sq mi (2,107.41/km2)
Time zone UTC−5 (Eastern)
 • Summer (DST) UTC−4 (EDT)
Congressional districts 7th, 8th, 10th, 12th


Union County is a county located in the northern part of New Jersey. It is one of the most populated counties in the state. In 2020, about 575,345 people lived here. This was the highest number of people ever counted in the county!

The main city and county seat is Elizabeth. It is also the largest city in Union County, both in population and size. Union County is a place where the central and northern parts of New Jersey meet.

In 2015, the average income per person in Union County was about $60,089. This was one of the highest in New Jersey. Union County is also one of the most crowded counties in the United States.

History of Union County

Why is it called Union County?

Union County was created in 1857. It was the last county to be formed in New Jersey. It got its name from the idea of "Union." This name was chosen because of big disagreements happening in the country at that time, which later led to the Civil War in 1861.

Early Days and Important Places

The land that is now Union County was bought in 1664. English settlers bought it from the Lenape Native Americans. These Native Americans lived in the area where Elizabeth is today.

Union County has many historic places. Some of these are listed on the National Register of Historic Places listings in Union County, New Jersey. Every fall, Union County hosts a "Four Centuries in a Weekend" event. During this festival, people can visit and learn about historic buildings, museums, and sites.

Geography and Nature

Union County covers about 105 square miles. Most of this area is land, with a small part being water.

The land in Union County is mostly flat and low. However, in the northwestern part, you can find the Watchung Mountains. The highest points in the county are in Berkeley Heights, reaching about 560 feet above sea level. The lowest point is at sea level along the eastern shore, near the Arthur Kill.

Rivers, Lakes, and Streams

Union County has several important waterways:

Weather and Climate

Weather chart for Elizabeth, New Jersey
J F M A M J J A S O N D
 
 
3.5
 
39
24
 
 
2.9
 
42
27
 
 
4.1
 
51
34
 
 
4.2
 
62
44
 
 
4
 
72
53
 
 
4
 
82
63
 
 
4.7
 
86
69
 
 
3.7
 
84
68
 
 
3.8
 
77
60
 
 
3.6
 
65
48
 
 
3.6
 
55
39
 
 
3.8
 
44
30
temperatures in °F
precipitation totals in inches
source: The Weather Channel

In Elizabeth, the county seat, temperatures usually range from about 24°F in January to 86°F in July. The coldest temperature ever recorded was -14°F in February 1934. The hottest was 105°F in July 1993. The county gets a good amount of rain throughout the year.

People of Union County

Historical population
Census Pop.
1860 27,780
1870 41,859 50.7%
1880 55,571 32.8%
1890 72,467 30.4%
1900 99,353 37.1%
1910 140,197 41.1%
1920 200,157 42.8%
1930 305,209 52.5%
1940 328,344 7.6%
1950 398,138 21.3%
1960 504,255 26.7%
1970 543,116 7.7%
1980 504,094 −7.2%
1990 493,819 −2.0%
2000 522,541 5.8%
2010 536,499 2.7%
2020 575,345 7.2%
2024 (est.) 594,160 10.7%
Historical sources: 1790–1990
1970–2010 2000
2010 2000–2010 2010-2020

Union County is home to people from many different backgrounds. For example, many Italian American residents live in towns like Berkeley Heights, Clark, and Westfield. There are also large African American communities in Elizabeth, Plainfield, and Rahway.

Towns like Roselle Park, Linden, and Elizabeth have growing Hispanic and Portuguese populations. The county also has a significant Jewish population, with communities in Cranford, Elizabeth, and Springfield.

Population Changes (2020 Census)

Union County, New Jersey – Racial and ethnic composition
Note: the US Census treats Hispanic/Latino as an ethnic category. This table excludes Latinos from the racial categories and assigns them to a separate category. Hispanics/Latinos may be of any race.
Race / Ethnicity (NH = Non-Hispanic) Pop 2000 Pop. 2010 Pop. 2020 % 2000 % 2010 % 2020
White alone (NH) 283,345 243,312 211,245 54.22% 45.35% 36.72%
Black or African American alone (NH) 104,926 111,705 112,261 20.08% 20.82% 19.51%
Native American or Alaska Native alone (NH) 547 546 552 0.10% 0.10% 0.10%
Asian alone (NH) 19,789 24,496 31,963 3.79% 4.57% 5.56%
Native Hawaiian or Pacific Islander alone (NH) 121 107 78 0.02% 0.02% 0.01%
Other race alone (NH) 1,462 2,279 6,190 0.28% 0.42% 1.08%
Mixed race or Multiracial (NH) 9,340 7,350 17,537 1.79% 1.37% 3.05%
Hispanic or Latino (any race) 103,011 146,704 195,519 19.71% 27.34% 33.98%
Total 522,541 536,499 575,345 100.00% 100.00% 100.00%

Population Changes (2010 Census)

In 2010, Union County had 536,499 people. About 24.5% of the population was under 18 years old. The average age was 38 years.

How Union County is Governed

County Government Leaders

The Union County Courthouse prior to 1900
The Union County Courthouse before 1900

Union County is managed by a group of nine people called the Board of County Commissioners. These commissioners are chosen by voters from across the county. They serve for three years, with some seats up for election each year.

The commissioners make the rules and decisions for the county. They create the budget and decide how money is spent. A County Manager, Edward Oatman, helps run the daily operations of the county departments.

At the start of each year, the commissioners choose a Chair and Vice Chair from their group. As of 2025, the County Commissioners are:

Commissioner Party, residence, term
Chair Kimberly Palmieri-Mouded D, Westfield, 2027
Vice Chair Lourdes M. Leon D, Elizabeth, 2026
James E. Baker Jr. D, Rahway, 2027
Joseph Bodek D, Linden, 2026
Michele Delisfort D, Union Township, 2026
Sergio Granados D, Elizabeth, 2025
Bette Jane Kowalski D, Cranford, 2025
Alexander Mirabella D, Fanwood, 2027
Rebecca Williams D, Plainfield, 2025

Other important elected officials for the county include:

Office Party, residence, term
County Clerk Joanne Rajoppi D, Westfield, 2025
Sheriff Peter Corvelli D, Kenilworth, 2026
Surrogate Christopher E. Hudak D, Clark, 2027

The New Jersey Superior Court for Union County is located in Elizabeth. Law enforcement in the county includes the Union County Police Department, the Union County Sheriff's Office, and the Union County Prosecutor's Office.

Recent County Government News

In 2023, Union County decided to honor a historic site in North Jersey. This site was where three enslaved New Jerseyans were publicly executed in 1741. Also in 2023, the county worked to change its official logo. The old logo showed a woman, Hannah Caldwell, being shot during the Battle of Connecticut Farms. The county asked residents to help choose a new logo that does not show this scene.

Law Enforcement in Union County

Union County Sheriff's Office 2021
Union County Sheriff's Office

The Union County Sheriff's Office is in Elizabeth. It is led by Sheriff Peter Corvelli. This office also manages the Union County Jail.

Union County Sheriff's Office DOC 2021
Union County Sheriff's Office - Division of Corrections
Ucpp
Union County Park Police

The Union County Police Department works separately from the Sheriff's office. It started as the Union County Park Police. Their job is to patrol county properties and help local towns when needed. Martin Mogensen has been the Chief of Police since February 2023. The County Police also run the Union County Regional 911 and Dispatch center.

Politics in Union County

Union County tends to vote for the Democratic Party. In the 2020 election, Joe Biden, a Democrat, received the most votes ever for a Democrat in the county. As of October 2021, most registered voters in Union County were Democrats.

Presidential Election Results

United States presidential election results for Union County, New Jersey
Year Republican Democratic Third party
No.  % No.  % No.  %
2024 89,063 36.81% 147,327 60.90% 5,533 2.29%
2020 80,002 31.49% 170,245 67.01% 3,794 1.49%
2016 68,114 30.47% 147,414 65.94% 8,042 3.60%
2012 68,314 32.52% 139,752 66.52% 2,022 0.96%
2008 78,768 35.41% 141,417 63.58% 2,241 1.01%
2004 82,517 40.55% 119,372 58.66% 1,613 0.79%
2000 68,554 36.78% 112,003 60.10% 5,816 3.12%
1996 65,912 34.65% 108,102 56.82% 16,227 8.53%
1992 87,742 41.76% 96,671 46.01% 25,699 12.23%
1988 112,967 54.27% 93,158 44.75% 2,028 0.97%
1984 135,446 59.11% 92,056 40.17% 1,638 0.71%
1980 112,288 51.66% 86,074 39.60% 18,977 8.73%
1976 118,019 51.56% 106,267 46.42% 4,616 2.02%
1972 148,290 61.03% 90,482 37.24% 4,201 1.73%
1968 110,309 45.72% 109,674 45.46% 21,273 8.82%
1964 82,999 33.29% 164,989 66.17% 1,359 0.55%
1960 123,224 50.29% 119,986 48.97% 1,798 0.73%
1956 146,228 67.57% 67,540 31.21% 2,646 1.22%
1952 122,885 60.46% 78,336 38.54% 2,024 1.00%
1948 87,402 53.89% 66,759 41.16% 8,019 4.94%
1944 86,543 52.57% 75,969 46.15% 2,113 1.28%
1940 79,962 52.50% 70,737 46.45% 1,597 1.05%
1936 59,553 45.08% 70,813 53.61% 1,731 1.31%
1932 67,512 54.91% 51,357 41.77% 4,092 3.33%
1928 68,119 64.21% 37,476 35.32% 497 0.47%
1924 50,356 67.99% 14,738 19.90% 8,966 12.11%
1920 39,409 72.57% 12,103 22.29% 2,791 5.14%
1916 16,705 59.21% 10,328 36.61% 1,181 4.19%
1912 5,421 21.55% 9,695 38.54% 10,040 39.91%
1908 15,920 60.90% 8,809 33.70% 1,414 5.41%
1904 13,906 58.92% 8,574 36.33% 1,120 4.75%
1900 12,533 58.95% 7,667 36.06% 1,061 4.99%
1896 11,707 61.58% 6,073 31.95% 1,230 6.47%
Gubernatorial elections results
Gubernatorial elections results
Year Republican Democratic
2021 37.6% 51,279 61.6% 83,913
2017 32.6% 39,552 65.2% 79,113
2013 51.2% 58,135 47.4% 53,869
2009 42.2% 56,769 51.1% 68,867
2005 38.0% 50,036 59.2% 77,982
2001 38.4% 50,780 60.3% 79,682
1997 46.6% 68,721 47.2% 69,673
1993 48.7% 76,359 48.8% 76,552
1989 36.7% 53,636 61.2% 89,419
1985 73.3% 102,411 25.1% 35,060
1981 53.4% 91,940 45.4% 78,251
1977 47.1% 77,695 49.7% 82,130
1973 30.0% 50,010 68.3% 113,678

Education in Union County

Colleges and Universities

  • Kean University: This is a public university in Union and Hillside. It has about 13,000 students and is known for its programs in arts, sciences, and education. It trains many teachers in New Jersey.
  • Union College: This is a two-year community college for Union County. It has campuses in Cranford, Elizabeth, Plainfield, and Scotch Plains.

School Districts

Most towns in Union County have their own public high schools. Some towns send their students to high schools in nearby towns:

  • Garwood students go to Arthur L. Johnson High School in Clark.
  • Winfield students go to David Brearley High School in Kenilworth.
  • Mountainside students go to Governor Livingston High School in Berkeley Heights.
  • Fanwood and Scotch Plains share one high school.

Here are the school districts in the county:

K-12 (Kindergarten to 12th Grade)
  • Berkeley Heights Public Schools
  • Clark Public School District
  • Cranford Township Public Schools
  • Elizabeth Public Schools
  • Hillside Public Schools
  • Kenilworth Public Schools
  • Linden Public Schools
  • New Providence School District
  • Plainfield Public School District
  • Rahway Public Schools
  • Roselle Park School District
  • Roselle Public Schools
  • Scotch Plains-Fanwood Regional School District
  • Springfield Public Schools
  • Summit Public Schools
  • Union Public School District
  • Westfield Public Schools
Elementary (Kindergarten to 8th Grade)
  • Garwood Public Schools
  • Mountainside School District
  • Winfield Township School District

Union County also has Union County Vocational Technical Schools. These schools offer special programs for students who want to learn specific job skills.

Economy and Jobs

In 2021, the total value of goods and services produced in Union County was about $34.4 billion. This shows how much economic activity happens here.

Some of the biggest employers in Union County in 2011 included:

# Employer # of employees
1 Merck & Co. 10,000
2 New England Motor Freight 3,900
3 USI Services Group 3,200
4 Overlook Medical Center 2,961
5 Maher Terminals 1,700
6 Trinitas Hospital 1,674
7 Children's Specialized Hospital 1,440
8 Alcatel-Lucent 1,300
9 ConocoPhillips 1,000

Transportation

Union County has many ways to get around, including roads, trains, and even an airport.

Roads and Highways

2018-06-20 18 47 05 View north along New Jersey State Route 444 (Garden State Parkway) between Exit 132 and Exit 135, entering Clark Township, Union County from Woodbridge Township, Middlesex County in New Jersey
Garden State Parkway northbound entering Union County

The county has over 1,400 miles of roads. Major highways that go through Union County include:

Did you know? Route 59, which is only in Union County, is the shortest state highway in New Jersey, at just 0.15 miles long!

Public Transportation

Future Walking and Biking Trails

There are plans to turn old railroad tracks into walking and biking trails, called "rail trails." These trails could connect different parks and towns. One idea is the Summit Park Line, which could run from Summit to Briant Park. Another idea is a trail along the old Rahway Valley Railroad from Summit to Roselle Park.

Towns and Cities in Union County

Union County, New Jersey Municipalities
Index map of Union County municipalities (click to see index key)


Union County has 21 different towns and cities. Here is a list of them:

Municipality
(with map key)
Map key Municipal
type
Population Housing
units
Total
area
Water
area
Land
area
Pop.
density
Housing
density
School district Communities
Berkeley Heights 21 township 13,285 4,596 6.27 0.05 6.21 2,122.4 739.9 Berkeley Heights Murray Hill (part)
Clark 14 township 15,544 5,751 4.49 0.19 4.30 3,430.5 1,337.0 Clark
Cranford 16 township 23,847 8,816 4.87 0.04 4.83 4,684.6 1,825.4 Cranford Township Cranford CDP (2,032)
Elizabeth 11 city 137,298 45,516 13.46 1.15 12.32 10,144.1 3,694.7 Elizabeth
Fanwood 6 borough 7,774 2,686 1.34 0.00 1.34 5,454.1 2,001.9 Scotch Plains-Fanwood
Garwood 5 borough 4,454 1,870 0.66 0.00 0.66 6,362.7 2,815.5 Clark (9-12) (S/R)

Garwood (PK-8)

Hillside 19 township 22,456 7,536 2.76 0.01 2.75 7,784.0 2,740.6 Hillside
Kenilworth 8 borough 8,427 2,924 2.16 0.00 2.16 3,668.3 1,355.3 Kenilworth Kean University CDP (part; 1,522)
Linden 12 city 43,738 15,872 11.41 0.73 10.68 3,793.8 1,486.8 Linden
Mountainside 3 borough 7,020 2,558 4.05 0.04 4.01 1,668.0 638.3 Berkeley Heights (9-12) (S/R)
Mountainside (PK-8)
New Providence 2 borough 13,650 4,537 3.66 0.02 3.64 3,343.4 1,246.3 New Providence Murray Hill (part)
Plainfield 7 city 54,586 16,621 6.03 0.01 6.02 8,270.1 2,759.8 Plainfield
Rahway 13 city 29,556 11,300 4.03 0.13 3.90 7,016.8 2,899.5 Rahway
Roselle 10 borough 22,695 7,939 2.66 0.01 2.65 7,953.5 2,994.7 Roselle
Roselle Park 9 borough 13,967 5,231 1.23 0.00 1.23 10,792.7 4,245.8 Roselle Park
Scotch Plains 20 township 24,968 8,896 9.05 0.03 9.02 2,606.9 986.4 Scotch Plains-Fanwood
Springfield 17 township 17,178 6,736 5.19 0.02 5.17 3,057.2 1,302.0 Springfield Springfield CDP (1,518)
Summit 1 city 22,719 8,190 6.05 0.05 6.00 3,578.9 1,366.0 Summit
Union 18 township 59,728 20,250 9.09 0.02 9.07 6,244.3 2,232.4 Union Connecticut Farms CDP (545)
Kean University CDP (part; 1,522)
Union CDP (2,229)
Vauxhall CDP (5,251)
Westfield 4 town 31,032 10,950 6.74 0.02 6.72 4,512.2 1,629.8 Westfield
Winfield 15 township 1,423 714 0.18 0.00 0.18 8,320.1 4,038.5 Kenilworth (9-12) (S/R)
Winfield Township (PK-8)
Union County county 575,345 199,489 105.40 2.55 102.85 5,216.1 1,939.5

Parks and Fun Things to Do

The Union County Department of Parks and Recreation takes care of many parks for everyone to enjoy.

County Parks

  • Ash Brook Reservation, Scotch Plains
  • Black Brook Park, Kenilworth
  • Briant Park, Summit
  • Brookside Park, Scotch Plains
Shakespeare Garden, Cedar Brook Park, NJ
Shakespeare Garden at Cedar Brook Park, Plainfield
  • Cedar Brook Park, Plainfield (home to the Shakespeare Garden)
  • Echo Lake Park, Westfield and Mountainside (This park was donated by a country club. The lake's name comes from the echo you can hear there.)
  • Elizabeth River Parkway
  • Esposito Park, Clark (It has a path with exercise equipment and a skate park.)
  • Green Brook Park, Plainfield (partial)
  • Hidden Valley Park, Springfield and Summit
  • Kawameeh Park, Union
  • Lenape Park, Cranford, Westfield, and Kenilworth (In the 1930s, mastodon bones were found here!)
  • Madison Avenue Park, Rahway
Mattano Park from 5th St bridge jeh
Mattano Park
  • Clark Reservoir Recreation Area
  • Mattano Park, Elizabeth (Named after a Lenape leader. The Elizabethtown Associates bought land from him and another leader named Warinanco in 1664.)
  • McConnell Park, Cranford (Named after Cranford's first town doctor.)
  • Milton Lake Park, Clark and Rahway
  • Mindowaskin Park, Westfield
  • Nomahegan Park, Cranford (It has Nomahegan Park Pond and surrounds the Rahway River.)
Lake near Union County College Cranford NJ
Nomahegan Pond near Union County College in Cranford
  • Oak Ridge Park, Clark
  • Passaic River Parkway, Berkeley Heights, New Providence, and Summit
  • Phil Rizzuto Park, Elizabeth
  • Ponderosa Farm Park, Scotch Plains
  • Rahway River Park, Rahway
  • Rahway River Parkway
  • Snyder Avenue Park, Berkeley Heights
  • Sperry Park, Cranford
  • Stanley Avenue Park, Summit
  • Tamaques Park, Scotch Plains
  • Unami Park, Cranford, Garwood, and Westfield
  • Washington Avenue Park, Springfield
  • Watchung Reservation, Mountainside and Scotch Plains
  • Warinanco Park, Elizabeth and Roselle (Named after a Native American leader. It was designed by the famous Olmsted Brothers firm.)
  • Wheeler Park, Linden

Other Cool Parks

  • Hawk Rise Sanctuary: This is a bird sanctuary in Linden. It opened in 2012 and has trails, wetlands, and different environments where 163 types of birds have been seen!
  • Reeves-Reed Arboretum in Summit.
  • Kennedy Reservation in Union.
  • The grounds of Liberty Hall Museum near Kean University in Union and Elizabeth.

River Parkways

  • Rahway River Parkway: This is a green area of parks along the Rahway River. It was the first project of the Union County Parks Commission, designed in the 1920s.
  • Elizabeth River Parkway: This is another green area along the Elizabeth River. It goes through Kean University and Liberty Hall Museum.

Public Golf Courses

Union County has two public golf courses where you can take lessons and practice:

  • Ash Brook Golf Course in Scotch Plains.
  • Galloping Hill Golf Course and Golf Learning Center in Kenilworth. This course hosted a big golf tournament in 2016.
Galloping Hill Golf Course in November 2022
Galloping Hill Golf Course in November 2022

A Special Golf Course

  • Shady Rest Country Club in Scotch Plains is very important. It was the first golf clubhouse in the United States owned and run by African Americans. John Matthew Shippen, Jr., the first African-American golf professional to play in the U.S. Open, played here. The club is now called 'Scotch Hills Country Club' and is open to everyone. It is listed on the National Registry of Historic Places.

Other Fun Places

  • Clark Community Pool
  • Centennial Avenue Pool in Cranford
  • Oak Ridge Archery Range
  • Orange Avenue Pool in Cranford
  • Trailside Nature and Science Center at Watchung Reservation
  • Warinanco Ice Skating Rink
  • Westfield Memorial Pool
  • Spray Pool – Wheeler Park (Linden)
  • County Pool – Rahway River Park (Rahway)

Arts and Culture

Union County has many places for arts and culture:

  • The Union County Performing Arts Center in Rahway offers music and theater shows.
  • Kean Stage at Kean University hosts professional performing arts events.
  • The Cranford Dramatic Club is New Jersey's oldest theater group, performing since 1919.
  • The Tomasulo Art Gallery is at Union County College in Cranford.
  • The Wharton Institute for the Performing Arts in Berkeley Heights and New Providence teaches music and performing arts, especially to children.
  • The Plainfield Symphony Orchestra started in 1919 and is the oldest community orchestra in the state.
  • The duCret School of Art in Plainfield was founded in 1926.
  • The Swain Gallery in Plainfield, founded in 1868, is the oldest privately owned art gallery in New Jersey.

Historical Societies

The Union County Historical Society of New Jersey was started in 1869. Many towns also have their own historical societies:

  • Berkeley Heights Historical Society
  • Clark Historical Society (runs the Dr. William Robinson Plantation House Museum, built in 1690)
  • Cranford Historical Society (maintains the Crane-Phillips House as a museum)
  • Garwood Historical Committee
  • Hillside Historical Society (meets at the Woodruff House)
  • Kenilworth Historical Society (runs the Oswald J. Nitschke House)
  • Linden Society for Historical Preservation
  • Mountainside Restoration Committee, Inc.
  • Plainfield Historical Society (headquartered at the Nathaniel Drake House Museum, built in 1746)
  • Rahway Historical Society (now called the Merchants' and Drovers' Tavern Museum Association)
  • Scotch Plains-Fanwood Historical Society (runs the Osborn Cannonball House)
  • Springfield Historical Society (home is the Historic Cannon Ball House)
  • Westfield Historical Society (in the Reeve History & Cultural Resource Center and runs the Miller-Cory House Museum)
  • Union Township Historical Society (located in the 1782 historic Caldwell Parsonage)

Other Groups for History

  • Friends of Rahway River Parkway works to protect the parks along the Rahway River.

Sister City

Union County has a special "sister city" relationship with Wenzhou in China.

Images for kids

See also

Kids robot.svg In Spanish: Condado de Union (Nueva Jersey) para niños

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