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Union County, Kentucky facts for kids

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Union County
Union County Courthouse in Morganfield
Map of Kentucky highlighting Union County
Location within the U.S. state of Kentucky
Map of the United States highlighting Kentucky
Kentucky's location within the U.S.
Country  United States
State  Kentucky
Founded 15 January 1811
Seat Morganfield
Largest city Morganfield
 • Total 363.38 sq mi (941.1 km2)
 • Land 342.85 sq mi (888.0 km2)
 • Water 20.53 sq mi (53.2 km2)  5.6%
 • Total 15,007
 • Estimate 
 • Density 42.3/sq mi (16.3/km2)
Congressional district 1st

Union County is a county in the U.S. state of Kentucky. As of the 2010 United States Census, the population was 15,007. Its county seat is Morganfield. The county was created effective 15 January 1811.

The county is located on the left (east) bank of the Ohio River opposite its confluence with the Wabash River. Union County, along with neighboring Posey County, Indiana, and Gallatin County, Illinois, form the tri-point of the Illinois-Indiana-Kentucky Tri-State Area.


According to the U.S. Census Bureau, the county has a total area of 363 square miles (940 km2), of which 343 square miles (890 km2) is land and 21 square miles (54 km2) (5.6%) is water. Union County is part of the Western Coal Fields region of Kentucky. The county's northwestern border with Illinois and Indiana is formed by the Ohio River.

Adjacent counties


Historical population
Census Pop.
1820 3,470
1830 4,764 37.3%
1840 6,673 40.1%
1850 9,012 35.1%
1860 12,791 41.9%
1870 13,640 6.6%
1880 17,809 30.6%
1890 18,229 2.4%
1900 21,326 17.0%
1910 19,886 −6.8%
1920 18,040 −9.3%
1930 17,053 −5.5%
1940 17,411 2.1%
1950 14,893 −14.5%
1960 14,537 −2.4%
1970 15,882 9.3%
1980 17,821 12.2%
1990 16,557 −7.1%
2000 15,637 −5.6%
2010 15,007 −4.0%
2018 (est.) 14,505 −3.3%
US Decennial Census
1790-1960 1900-1990
1990-2000 2010-2013

2010 census

As of the 2010 Census, the population was 15,007. Of this, 85.45% were White, 12.05% were Black or African American, 1.49% were two or more races, 0.44% were some other race, 0.34% were Asian, 0.19% were American Indian or Alaska Native, 0.05% were Native Hawaiian or other Pacific Islander. Hispanic or Latino (of any race) were 1.62% of the population


These are the major highway routes through Union County:

  • US 60.svg U.S. Route 60
  • Elongated circle 56.svg KY 56
  • Elongated circle 109.svg KY 109

The John T. Myers Locks and Dam once known as Uniontown Locks and Dam is located on the Ohio River 3½ miles downstream from Uniontown and straddles the river between Union County and Posey County Indiana. Construction on the dam was begun in 1965 by the U.S. Army Corps of Engineers and completed in 1977. It was renamed to honor retired Indiana congressman John T. Myers.



Census-designated place

Other unincorporated place


Public schools are managed by Union County Public Schools. The three public elementary schools in the county are located in Morganfield, Sturgis, and Uniontown. The county has one public middle school and one public high school, Union County High School. Located near Morganfield, Kentucky, it is known for its wrestling program. St. Ann School, the county's only private school, in Morganfield, holds preschool, elementary, and middle school classes.

Notable people

  • Ben M. Bogard, lived as a child in Union County; became a Baptist minister and was involved with the Landmarkism Movement.
  • Dwane Casey, longtime NBA head coach, currently the head coach of the Detroit Pistons.
  • Ormsby M. Mitchel, astronomer and major general during the American Civil War
  • William L. O'Daniel (1923−2017), a Union County farmer who served in the Illinois General Assembly
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