Cities and Towns in Mercer County, New Jersey

Founded in 1838, Mercer County is one of 21 counties in the state of New Jersey. Historically, Mercer County was formed from Burlington County, Hunterdon County, Middlesex County, and Somerset County. The city of Trenton is the county seat. With FIPS code of 21, Mercer County has a population of 385,898 and area of 226 square miles (585 km²).

List of all cities in Mercer County, NJ alphabetically

City/Town	Postal Code	Area Code
Division of Revenue, NJ	08646	609
	08695	609
East Windsor, NJ	08520	609
Educational Testing Service, NJ	08541	609
Ewing, NJ	08560	609
	08618	609
	08628	609
	08638	609
Ewing Township, NJ	08618	609
	08628	609
	08638	609
Groveville, NJ	08620	609
Hamilton, NJ	08609	609
	08610	609
	08611	609
	08619	609
	08620	609
	08629	609
	08650	609
	08690	609
	08691	609
Hamilton Square, NJ	08690	609
Hightstown, NJ	08520	609
Hopewell, NJ	08525	609
Lawrence, NJ	08648	609
Lawrenceville, NJ	08648	609
Mercerville, NJ	08619	609
Nj Income Tax, NJ	08647	609
North J Income Tax, NJ	08647	609
North J State Income Tax, NJ	08645	609
Pennington, NJ	08534	609
Princeton, NJ	08540	609
	08541	609
	08542	609
	08543	609
	08544	609
Princeton Junction, NJ	08550	609
Princeton Township, NJ	08540	609
Princeton University, NJ	08544	609
Robbinsville, NJ	08691	609
State Income Tax, NJ	08645	609
State of Nj Motor Vehicles, NJ	08666	609
State of Nj Taxation Dept, NJ	08646	609
	08695	609
Titusville, NJ	08560	609
Trenton, NJ	08601	609
	08602	609
	08603	609
	08604	609
	08605	609
	08606	609
	08607	609
	08608	609
	08609	609
	08610	609
	08611	609
	08618	609
	08619	609
	08620	609
	08625	609
	08628	609
	08629	609
	08638	609
	08645	609
	08646	609
	08647	609
	08648	609
	08650	609
	08666	609
	08690	609
	08691	609
	08695	609
Uppr Free Township, NJ	08691	609
West Trenton, NJ	08628	609
West Win Tow, NJ	08550	609
West Windsor, NJ	08550	609
Windsor, NJ	08561	609
Yardville, NJ	08620	609

Major Cities and Towns in Mercer County, New Jersey

Trenton, New Jersey

Location and History

• Area: 7.6 square miles
• Population: 94,000 (2020 Census)
• Zip Codes: 08601, 08602, 08608, 08609, 08611
• Latitude: 40.2171° N
• Longitude: 74.7429° W

Trenton, the capital city of New Jersey, is located in the central part of Mercer County along the Delaware River. Established in 1719 and incorporated in 1792, Trenton has played a significant role in American history, particularly during the Revolutionary War. It was here that George Washington led his troops to victory in the Battle of Trenton on December 26, 1776, a pivotal moment that boosted American morale. Throughout the 19th century, Trenton developed into an industrial center, known for its manufacturing of pottery, iron, and other goods. The city’s strategic location made it an important transportation hub, with railroads and canals facilitating trade. However, like many industrial cities, Trenton faced economic challenges in the latter half of the 20th century, leading to population decline and urban challenges. In recent years, revitalization efforts have aimed to improve the city’s economy, infrastructure, and public services, while also emphasizing its rich historical significance.

Major Schools and Landmarks

Trenton is served by the Trenton Public Schools district, which includes several elementary and secondary schools, with Trenton Central High School being one of the most prominent institutions. The city is also home to several private schools and charter schools. Notable landmarks in Trenton include the New Jersey State House, the second oldest capitol building still in use in the United States, which features a gold dome and offers tours for visitors. The Old Barracks Museum, built during the French and Indian War, serves as a historical site that showcases the city’s colonial past. The Trenton City Museum, located in Ellarslie Mansion within Cadwalader Park, features exhibits on local history and art. The nearby Delaware and Raritan Canal State Park offers recreational opportunities such as walking, biking, and kayaking. With its blend of historical significance, educational institutions, and cultural landmarks, Trenton serves as a vibrant center of government and community life in New Jersey.

Princeton, New Jersey

Location and History

• Area: 18.9 square miles
• Population: 30,000 (2020 Census)
• Zip Codes: 08540
• Latitude: 40.3573° N
• Longitude: 74.6672° W

Princeton is a borough located in the central part of Mercer County, New Jersey. It is best known as the home of Princeton University, one of the oldest and most prestigious universities in the United States, founded in 1746. The area was originally settled by European colonists in the early 18th century and played a key role during the American Revolutionary War, notably in the Battle of Princeton in 1777, which was a crucial victory for the Continental Army. Princeton’s development was closely tied to the university, which has shaped the character of the town over the centuries. The borough has a rich cultural heritage and offers a blend of historical charm and modern amenities. In recent decades, Princeton has experienced growth and diversification, attracting residents and visitors drawn by its educational institutions, cultural events, and scenic landscapes. The combination of a vibrant academic community and historical significance makes Princeton a unique and desirable place to live and visit.

Major Schools and Landmarks

Princeton is served by the Princeton Public Schools district, which includes Princeton High School, known for its academic excellence and diverse programs. The town also has several private and parochial schools, such as The Hun School of Princeton and Princeton Day School. Princeton University is a key educational landmark, featuring stunning Gothic architecture and extensive libraries, as well as public art installations and gardens. The Princeton University Art Museum is renowned for its collection of artworks and hosts various exhibitions and cultural events. Other notable landmarks include Nassau Hall, the oldest building on campus, and the McCarter Theatre Center, which hosts performances ranging from drama to music. The town’s charming downtown area is filled with shops, cafes, and restaurants, providing a vibrant atmosphere for residents and visitors. The surrounding parks, such as Princeton Battlefield State Park, offer opportunities for outdoor recreation and historical exploration. Princeton’s rich educational, cultural, and historical offerings make it a distinguished town in New Jersey.

Ewing Township, New Jersey

Location and History

• Area: 9.1 square miles
• Population: 38,000 (2020 Census)
• Zip Codes: 08618, 08628
• Latitude: 40.2594° N
• Longitude: 74.8006° W

Ewing Township is located in Mercer County, New Jersey, just north of the city of Trenton. The area was originally settled in the 17th century and was primarily agricultural. Ewing was incorporated in 1834 and named after George Ewing, a prominent local landowner. The township grew steadily over the years, benefiting from its proximity to major transportation routes, including railroads and highways. Ewing’s development accelerated in the 20th century as it transitioned from a rural community to a suburban township, attracting families and businesses seeking a convenient location near Trenton. Today, Ewing is characterized by its residential neighborhoods, parks, and educational institutions. The township continues to develop while preserving its natural spaces and community feel, making it a desirable place for families and professionals.

Major Schools and Landmarks

Ewing Township is served by the Ewing Public Schools district, which includes Ewing High School, known for its strong academic programs and extracurricular activities. The township is also home to several private schools, such as The Ewing School and Saint James School. Major landmarks in Ewing include the TCNJ (The College of New Jersey), which offers higher education opportunities and a beautiful campus. The college’s grounds host various cultural events and community programs. Ewing also features several parks, such as Ewing Park and Cadwalader Park, which offer walking trails, sports fields, and playgrounds. The township is known for its commitment to preserving green spaces, with a focus on community activities and environmental stewardship. The Delaware River is nearby, providing recreational opportunities for residents. Ewing Township’s blend of educational institutions, recreational amenities, and a strong community atmosphere makes it an attractive place to live and work.

Hamilton Township, New Jersey

Location and History

• Area: 40.7 square miles
• Population: 88,000 (2020 Census)
• Zip Codes: 08610, 08611, 08619, 08690
• Latitude: 40.2130° N
• Longitude: 74.7484° W

Hamilton Township is located in Mercer County, New Jersey, and is one of the largest municipalities in the county. Originally settled in the 17th century, the township was formed in 1842 and named after the town of Hamilton, New York. The area grew as a farming community and later developed into an industrial center with the establishment of various factories and businesses. Hamilton Township has experienced significant growth and development throughout the 20th century, transitioning from a rural landscape to a suburban community. Its proximity to major highways and transportation routes has made it an attractive location for residents seeking access to Trenton and Philadelphia. The township is known for its diverse population, vibrant neighborhoods, and commitment to preserving open spaces and parks.

Major Schools and Landmarks

Hamilton Township is served by the Hamilton Township Public Schools district, which includes several elementary and middle schools, along with Hamilton High School, recognized for its academic achievements and extracurricular programs. The township is also home to several private schools, such as the Mercer County Technical School. Major landmarks in Hamilton Township include the Grounds for Sculpture, a 42-acre sculpture park and museum that features contemporary sculptures and art installations. The township also features the historic Sayen House and Gardens, a beautiful estate with botanical gardens open to the public. The nearby Roebling Memorial Park offers recreational facilities, including sports fields and walking trails along the Delaware River. Hamilton’s diverse parks and community events, such as festivals and farmers’ markets, create a strong sense of community. With its blend of educational opportunities, recreational amenities, and rich history, Hamilton Township is an attractive destination for families and professionals.

Lawrence Township, New Jersey

Location and History

• Area: 16.3 square miles
• Population: 36,000 (2020 Census)
• Zip Codes: 08648
• Latitude: 40.2725° N
• Longitude: 74.7030° W

Lawrence Township is situated in Mercer County, New Jersey, just north of Trenton. The area was originally settled in the late 17th century and was named after Captain James Lawrence, a naval officer who served in the War of 1812. Lawrence Township was incorporated in 1840 and has a rich agricultural history, with many farms and orchards dotting the landscape in its early years. Over time, the township has transformed into a suburban community, benefiting from its proximity to major transportation routes and the economic opportunities offered by nearby Trenton and Princeton. The township retains a blend of rural charm and suburban convenience, with a focus on preserving open spaces and maintaining a strong sense of community. Lawrence Township is known for its diverse neighborhoods, excellent schools, and commitment to local parks and recreational activities.

Major Schools and Landmarks

Lawrence Township is served by the Lawrence Township Public Schools district, which includes Lawrence High School, known for its comprehensive academic programs and strong athletic teams. The township is also home to private educational institutions, including St. Ann School. Major landmarks in Lawrence Township include the Lawrenceville School, a prestigious preparatory school with historic significance, and the Bunker Hill Park, which offers walking trails, sports fields, and picnic areas. The nearby Delaware and Raritan Canal State Park provides opportunities for hiking, biking, and enjoying the scenic landscape. The township also hosts community events, such as the annual Lawrenceville Arts and Culture Festival, which celebrates local artists and musicians. Lawrence Township’s combination of educational resources, natural beauty, and community engagement makes it a desirable place to live and thrive.