Mercer County, New Jersey
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Stop 1: County
About Mercer County
Mercer County is a county located in the U.S. state of New Jersey. Its county seat is Trenton, also the state capital, prompting its nickname The Capital County. Mercer County alone constitutes the Trenton–Princeton metropolitan statistical area and is considered part of the New York combined statistical area by the U.S. Census Bureau, but also directly borders the Philadelphia metropolitan area and is included within the Federal Communications Commission's Philadelphia Designated Media Market Area. The county is part of the Central Jersey region of the state.
Description adapted from Wikipedia, CC BY-SA 4.0.
Stop 2: Facts
Mercer County at a glance
- County seat
- Trenton
- Population
- 387,340 (2020)
- Land area
- 229 sq mi
- Founded
- 1838
Stop 3: Places
Largest communities in Mercer County
- Hamilton Township92,297
- Trenton County seat90,871
- Ewing Township37,264
- Lawrence Township33,077
- Princeton30,681
Stop 4: History
History of Mercer County
Founded February 22, 1838, from portions of 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 25–26, 1776, General George Washington led American forces across the Delaware River to attack the Hessian forces in the Battle of Trenton on the morning of December 26, also known as the First Battle of Trenton. After the battle, Washington crossed back to Pennsylvania. He crossed a third time in a surprise attack on the forces of General Charles Cornwallis at the Battle of the Assunpink Creek, on January 2, 1777, also known as the Second Battle of Trenton, and at the Battle of Princeton on January 3. The successful attacks built morale among the pro-independence colonists.
Adapted from Wikipedia, CC BY-SA 4.0.
Stop 5: Check
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Ask Mercer County directly
Your county election office handles registration, mail ballots, and polling places.
Stop 6: Resources
Official channels
Mercer County election resources
Statewide tools and every New Jersey resource in one place: the New Jersey page at Scan Check Protect →
Stop 7: Neighbors
Neighboring counties
Stop 8: About
Part of New Jersey Voter Check
This is the Mercer County page of New Jersey Voter Check, a project of True the Vote, pointing New Jersey voters at the official tools that already exist — and at Scan Check Protect to verify your registration.
Where anything here differs from what Mercer County or the New Jersey Division of Elections publishes, they are right and this page is not.