Middlesex County, New Jersey
Check your Middlesex County registration.
Confirm what New Jersey has on file first, then use Middlesex County's official election channels below.
Stop 1: County
About Middlesex County
Middlesex County is a county located in the central portion of the U.S. state of New Jersey, extending inland from the Raritan Valley region to the northern portion of the Jersey Shore. As of the 2020 United States census, the county was the state's third-most populous county with a population of 863,162, its highest decennial count ever and an increase of 53,304 (+6.6%) from the 2010 census count of 809,858, which in turn reflected an increase of 59,696 (8.0%) from the 750,162 counted in the 2000 census. The United States Census Bureau's Population Estimates Program estimated a 2025 population of 883,335, an increase of 20,173 (+2.3%) from the 2020 decennial census.
Description adapted from Wikipedia, CC BY-SA 4.0.
Stop 2: Facts
Middlesex County at a glance
- County seat
- New Brunswick
- Population
- 863,162 (2020)
- Land area
- 322 sq mi
- Founded
- 1683
Stop 3: Places
Largest communities in Middlesex County
- Edison107,588
- Woodbridge Township103,639
- Old Bridge Township66,876
- Piscataway60,804
- Perth Amboy55,436
Stop 4: History
History of Middlesex County
Clay was once frequently mined in Middlesex County, with mining across the Raritan Formation continuing until the late twentieth century. Clay mining activity north of the Raritan River was particularly active near Woodbridge.
Adapted from Wikipedia, CC BY-SA 4.0.
Stop 5: Check
Start here
Confirm you're ready to vote in Middlesex County
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Run a guided check
Scan Check Protect walks you through verifying your New Jersey registration and flags anything that needs fixing — free.
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Ask Middlesex County directly
Your county election office handles registration, mail ballots, and polling places.
Stop 6: Resources
Official channels
Middlesex 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 Middlesex 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 Middlesex County or the New Jersey Division of Elections publishes, they are right and this page is not.