Casey County is a county located in the U.S. Commonwealth of Kentucky. As of the 2020 census, the population was 15,941. Its county seat is Liberty. The county was formed in 1806 from the western part of Lincoln County and named for Colonel William Casey, a pioneer settler who moved his family to Kentucky in 1779. It is the only Kentucky county entirely in the Knobs region. Casey County is home to annual Casey County Apple Festival, and is a prohibition or dry county. It is considered part of the Appalachian region of Kentucky.

Casey County was established in 1806 from land given by Lincoln County. The third and present courthouse was built in 1889.

In 2015, County Clerk Casey Davis received national press when he announced he would deny same-sex marriage licenses, as a show of solidarity with fellow county clerk Kim Davis (no relation), who was criticized and later jailed for doing the same thing in Rowan County, Kentucky.

According to the United States Census Bureau, the county has a total area of 446 square miles (1,160 km), of which 444 square miles (1,150 km) is land and 1.5 square miles (3.9 km) (0.3%) is water.

The highest point in Casey County is Green River Knob at 1,789 feet (545 m).

• Boyle County (north)
• Lincoln County (east)
• Pulaski County (southeast)
• Russell County (south/CST Border)
• Adair County (southwest/CST Border)
• Taylor County (west)
• Marion County (northwest)

• KY 80
• US 127
• KY 49
• KY 70
• KY 78
• KY 198
• KY 243
• KY 910

Historical population

Census	Pop.	Note	%±
1810	3,285		—
1820	4,349		32.4%
1830	4,342		−0.2%
1840	4,939		13.7%
1850	6,556		32.7%
1860	6,466		−1.4%
1870	8,884		37.4%
1880	10,983		23.6%
1890	11,848		7.9%
1900	15,144		27.8%
1910	15,479		2.2%
1920	17,213		11.2%
1930	16,747		−2.7%
1940	19,962		19.2%
1950	17,446		−12.6%
1960	14,327		−17.9%
1970	12,930		−9.8%
1980	14,818		14.6%
1990	14,211		−4.1%
2000	15,447		8.7%
2010	15,955		3.3%
2020	15,941		−0.1%
2023 (est.)	15,918		−0.1%
U.S. Decennial Census 1790-1960 1900-1990 1990-2000 2010-2020

As of the census of 2000, there were 15,447 people, 6,260 households, and 4,419 families residing in the county. The population density was 35 per square mile (14/km). There were 7,242 housing units at an average density of 16 per square mile (6.2/km). The racial makeup of the county was 98.30% White, 0.33% Black or African American, 0.28% Native American, 0.06% Asian, 0.05% Pacific Islander, 0.31% from other races, and 0.66% from two or more races. 1.28% of the population were Hispanic or Latino of any race.

There were 6,260 households, out of which 31.00% had children under the age of 18 living with them, 56.10% were married couples living together, 10.80% had a female householder with no husband present, and 29.40% were non-families. 26.80% of all households were made up of individuals, and 12.60% had someone living alone who was 65 years of age or older. The average household size was 2.44 and the average family size was 2.94.

24.50% of the population was under the age of 18, 8.20% from 18 to 24, 27.50% from 25 to 44, 24.70% from 45 to 64, and 15.10% who were 65 years of age or older. The median age was 38 years. For every 100 females there were 95.60 males. For every 100 females age 18 and over, there were 92.60 males.

The median income for a household in the county was $21,580, and the median income for a family was $27,044. Males had a median income of $22,283 versus $17,885 for females. The per capita income for the county was $12,867. About 20.70% of families and 25.50% of the population were below the poverty line, including 32.10% of those under age 18 and 29.60% of those age 65 or over.

Casey County is the county in the United States with the highest proportion of Midwest Beachy Amish adherents, with 1.11% of the population in 2020 subscribing to the denomination.

Casey County has one of the longest streaks of voting for Republican Party candidates in presidential elections in Kentucky & nationwide, with its candidates gaining the majority of the vote by wide margins in every election from 1916 on. No Democratic presidential candidate has won more than 30% of the county's vote since Jimmy Carter in 1976.

United States presidential election results for Casey County, Kentucky

Year	Republican		Democratic		Third party(ies)
	No.	%	No.	%	No.	%
2024	6,216	87.80%	804	11.36%	60	0.85%
2020	6,179	86.17%	918	12.80%	74	1.03%
2016	5,482	85.14%	767	11.91%	190	2.95%
2012	4,904	80.51%	1,086	17.83%	101	1.66%
2008	4,679	78.55%	1,219	20.46%	59	0.99%
2004	5,109	80.83%	1,174	18.57%	38	0.60%
2000	4,284	78.33%	1,122	20.52%	63	1.15%
1996	3,187	65.40%	1,106	22.70%	580	11.90%
1992	3,317	62.56%	1,409	26.57%	576	10.86%
1988	3,857	75.38%	1,216	23.76%	44	0.86%
1984	4,356	79.01%	1,122	20.35%	35	0.63%
1980	4,239	75.27%	1,298	23.05%	95	1.69%
1976	3,379	67.15%	1,602	31.84%	51	1.01%
1972	3,727	78.83%	913	19.31%	88	1.86%
1968	3,698	70.64%	879	16.79%	658	12.57%
1964	3,457	64.54%	1,875	35.01%	24	0.45%
1960	4,811	77.30%	1,413	22.70%	0	0.00%
1956	4,167	72.48%	1,570	27.31%	12	0.21%
1952	3,831	71.39%	1,522	28.36%	13	0.24%
1948	3,380	68.32%	1,495	30.22%	72	1.46%
1944	3,869	71.53%	1,520	28.10%	20	0.37%
1940	3,874	67.34%	1,862	32.37%	17	0.30%
1936	3,588	64.84%	1,925	34.78%	21	0.38%
1932	3,840	58.93%	2,651	40.68%	25	0.38%
1928	3,805	71.39%	1,519	28.50%	6	0.11%
1924	3,120	63.03%	1,797	36.30%	33	0.67%
1920	3,543	64.03%	1,951	35.26%	39	0.70%
1916	1,949	58.37%	1,352	40.49%	38	1.14%
1912	902	31.23%	1,158	40.10%	828	28.67%

Casey County Schools operates public schools.

• Liberty (county seat)

• Bethelridge
• Clementsville
• Creston
• Dunnville
• Middleburg
• Phil
• Jacktown
• Penetralia
• Teddy
• Upper Tygart
• Walltown
• Windsor
• Yosemite

• Silas Adams, member of the United States House of Representatives (1893–1895)
• Tim Butler, The Psychedelic Furs bass player
• Charles T. Wethington Jr., former president of the University of Kentucky
• Crystal Wilkinson, author
• Wallace G. Wilkinson, governor of Kentucky (1987–1991)

• Dry counties
• National Register of Historic Places listings in Casey County, Kentucky

• The Kentucky Highlands Project

37°19′N 84°56′W / 37.32°N 84.93°W / 37.32; -84.93