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Clinton County, New York facts for kids

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Clinton County
Clinton County Courthouse
Flag of Clinton County
Official seal of Clinton County
Map of New York highlighting Clinton County
Location within the U.S. state of New York
Map of the United States highlighting New York
New York's location within the U.S.
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Country  United States
State  New York
Founded 1788
Named for George Clinton
Seat Plattsburgh
Largest city Plattsburgh
 • Total 1,117.53 sq mi (2,894.4 km2)
 • Land 1,037.85 sq mi (2,688.0 km2)
 • Water 80 sq mi (200 km2)  7.1%
 • Total 82,128
 • Density 79.1/sq mi (30.5/km2)
Time zone UTC−5 (Eastern)
 • Summer (DST) UTC−4 (EDT)
Congressional district 21st

Clinton County is a county in the north-easternmost corner of the state of New York, in the United States and bordered by the Canadian province of Quebec. As of the 2010 United States Census, the population was 82,128. Its county seat is the city of Plattsburgh. The county lies just south of the border with the Canadian province of Quebec and to the west of the State of Vermont.

The county is named for George Clinton, the first Governor of New York, who later was elected as Vice President. He had been a Founding Father who represented New York in the Continental Congress.

Clinton County comprises the Plattsburgh, New York Micropolitan statistical area.


George Clinton, governor of New York (portrait by Ezra Ames)
George Clinton, namesake of Clinton County. First Governor of New York, Vice President under Thomas Jefferson and James Madison, and representative of New York in the Continental Congress

When counties were established in New York State in 1683, the present Clinton County was part of Albany County. This was an enormous county, including the northern part of New York State as well as all of the present state of Vermont and, in theory, extending westward to the Pacific Ocean. This county was reduced in size on July 3, 1766, by the creation of Cumberland County, and further on March 16, 1770, by the creation of Gloucester County, both containing territory now in Vermont. On March 12, 1772, what was left of Albany County was split into three parts, one remaining under the name Albany County. One of the other pieces, Charlotte County, contained the eastern portion.

In 1784, the name "Charlotte County" was changed to Washington County to honor George Washington, the American Revolutionary War general and later President of the United States of America.

In 1788, Clinton County was split off from Washington County. This was a much larger area than the present Clinton County, including several other counties or county parts of the present New York State.

In 1799, Essex County was split off from Clinton County.

In 1802, parts of Clinton, Herkimer, and Montgomery counties were taken to form the new St. Lawrence County.

In 1808, Franklin County was split off from Clinton County.


According to the U.S. Census Bureau, the county has a total area of 1,118 square miles (2,900 km2), of which 1,038 square miles (2,690 km2) is land and 80 square miles (210 km2) (7.1%) is water.

Clinton County is in the northeastern part of the State of New York, west of Vermont and south of the Canadian province of Quebec. The eastern boundary of Clinton County is Lake Champlain, which serves as the New York-Vermont border. Because of this, the encompassing region is referred to as the Adirondack Coast. The Ausable River forms a large part of the south county line.

The southwest part of the county is in the Adirondack Park.

Adjacent counties and municipalities


Historical population
Census Pop.
1790 1,615
1800 8,514 427.2%
1810 8,002 −6.0%
1820 12,070 50.8%
1830 19,344 60.3%
1840 28,157 45.6%
1850 40,047 42.2%
1860 45,735 14.2%
1870 47,947 4.8%
1880 50,897 6.2%
1890 46,437 −8.8%
1900 47,430 2.1%
1910 48,230 1.7%
1920 43,898 −9.0%
1930 46,687 6.4%
1940 54,006 15.7%
1950 53,622 −0.7%
1960 72,722 35.6%
1970 72,934 0.3%
1980 80,750 10.7%
1990 85,969 6.5%
2000 79,894 −7.1%
2010 82,128 2.8%
2018 (est.) 80,695 −1.7%
US Decennial Census
1790-1960 1900-1990
1990-2000 2010-2013




The following public use airports are located in the county:

  • Plattsburgh International Airport (PBG) – Plattsburgh
  • Clinton County Airport (PLB) – Plattsburgh
  • Rouses Point Seaplane Base (K21) – Rouses Point





Census-designated places



The State University of New York at Plattsburgh is located in the City of Plattsburgh. The county is also served by Clinton Community College, which is located in the Town of Plattsburgh.


Clinton Correctional Facility, a maximum-security prison is located in the village of Dannemora. Altona Correctional Facility is a medium-security prison in the town of Altona.

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