Counties

62 Counties

Adirondacks

Hamilton County

Hamilton is the least populous county in New York. It is named after Alexander Hamilton, the only member of the NYS delegation who signed the US Constitution in 1787

Website: https://www.hamiltoncounty.com/

Outline of Hamilton County on a Map of New York State.

Central New York

Herkimer County

The county is named after General Nicholas Herkimer, who died in 1777 after taking part in Battle of Oriskany during the Revolutionary War.

Website: https://www.herkimercounty.org/

Outline of Herkimer County on a Map of New York State.

Thousand Islands Seaway

Jefferson County

The county is named after Thomas Jefferson, third President of the United States of America. It is adjacent to Lake Ontario, southeast from the Canadian border of Ontario.

Website: https://www.co.jefferson.ny.us/

Outline of Jefferson County on a Map of New York State.

New York City

Kings County

Brooklyn has had the same boundaries as Kings County, which is the most populous county in New York and the second-most densely populated county in the United States.

Website: https://www.brooklynbp.nyc.gov/

Outline of Kings County on a Map of New York State.

Adirondacks

Lewis County

Lewis county is named after Morgan Lewis, the Governor of New York when the county was established.

Website: https://lewiscountyny.gov/

Outline of Lewis County on a Map of New York State.

Finger Lakes

Livingston County

Livingston county is named after Robert R. Livingston, a member of the committee that drafted the Declaration of Independence.

Website: https://www.livingstoncounty.us/

Outline of Livingston County on a Map of New York State.

Central New York

Madison County

The county is named after James Madison, fourth President of the United States of America.

Website: https://www.madisoncounty.ny.gov/

Outline of Madison County on a Map of New York State.

Finger Lakes

Monroe County

Monroe's county seat is the city of Rochester. The county is named after James Monroe, fifth President of the United States of America.

Website: https://www.monroecounty.gov/

Outline of Monroe County on a Map of New York State.

Central New York

Montgomery County

Montgomery County borders the banks of the Mohawk River. It was named in honor of Richard Montgomery, an American Revolutionary War general killed at the Battle of Quebec.

Website: https://www.co.montgomery.ny.us/

Outline of Montgomery County on a Map of New York State.

Long Island

Nassau County

The name of the county comes from an old name for Long Island, which was at one time named Nassau, after the Dutch Prince William of Nassau, Prince of Orange.

Website: https://www.nassaucountyny.gov/

Outline of Nassau County on a Map of New York State.

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