Welcome to
Mercer County
New Jersey
Genealogy and History

Finding Ancestors ....
wherever their trails led

 

Hello, my name is Nancy Keyes (formerly Piper) and I am your New Jersey State host.

If you have data that you would like to have posted on this website, please email me.
Please include the County (and State) you are submitting data for.

THIS COUNTY IS AVAILABLE FOR ADOPTION

Our goal is to help you track your ancestors through time by transcribing genealogical and historical data and placing it online for the free use of all researchers.
If you have a love for history, a desire to help others, and basic web-authoring skills, consider joining us! Get the details on our Volunteer Page.
[A desire to transcribe data and knowledge of how to make a basic webpage is required.]

This County currently does not have a host. This means that there is no one available to help answer your questions about this county's history or to help you with your family's genealogy within this county. WE REGRET THAT WE ARE UNABLE TO DO PERSONAL RESEARCH FOR YOU.
ONLINE DATA

Biographies

 Births

 HISTORY

Census

Church Histories/Records

Marriages

Military

Newspaper Data

Obituaries and Death Notices

Wills/Probate Records 

Previous Updates

 
Recent Website Updates:
November 2024
Death Notices:
Patrick Powers, Son of Mayor Vroom

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Officially founded in 1838 and carved out of other surrounding counties, Mercer County has a historical impact that reaches back to the pivotal battles of the American Revolutionary War. On the night of December 25, 1776, General George Washington led the American forces across the Delaware River to attack Hessian forces in Trenton, New Jersey, who did not anticipate an attack near Christmas. Washington followed up the assault with a surprise attack on General Charles Cornwallis' forces in the Battle of Princeton on the eve of January 2, 1777, eventually retaking the colony. The successful attacks built morale among the pro-independence colonists.

Mercer County also has the dubious distinction of being the famed landing spot for a Martian invasion of the United States. In 1938, in what has become one of the most famous radio plays of all time, Orson Welles acted out his War of the Worlds invasion. Wells landed his imaginary aliens on Mercer County soil, using what is now West Windsor Township as the point of first contact. A monument commemorating the "landing" is erected at Grover's Mill
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County Seat:
The county seat is Trenton
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Since 2000, Mercer County has been considered part of the New York metropolitan area; before that time it had been considered part of the Philadelphia metropolitan area.

The county is named for Continental Army General Hugh Mercer, who died at the Battle of Princeton in 1777.
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Municipalities within County

East Windsor Township
Ewing Township
Hamilton Township
Hopewell Township
Lawrence Township
Princeton Township
Washington Township
West Windsor Township

Hightstown (borough)
Hopewell Borough
Lawrenceville
Mercerville-Hamilton Square
Pennington (borough)
Princeton Borough
Princeton Junction
Princeton North
Robbinsville
Titusville
Trenton (city)
Twin Rivers
White Horse
Windsor
Yardville-Groveville

Surrounding Counties:
Somerset County, New Jersey - north
Middlesex County, New Jersey - northeast
Monmouth County, New Jersey - east
Burlington County, New Jersey - south
Bucks County, Pennsylvania - west
Hunterdon County, New Jersey - northwest


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