Rockcastle County, Kentucky

Rockcastle County: County in Kentucky, United States


Rockcastle County is a county located in the U.S. state of Kentucky. As of the 2010 census, the population was 17,056 and a population density of 21 people per km². After 10 years in 2020 county had an estimated population of 16,750 inhabitants. Its county seat is Mount Vernon. The county was created 213 years ago in 1810.

Quick Facts about Rockcastle County

Population : 16,750 (2020)
Country : United States of America
State : Kentucky (United States)
Area : 824 km2
Water as percent of area : 0.5%
Land as percent of area : 99.5%
Named for : Rockcastle River
Altitude : 1,289 feet / 393 meters
Capital : Mount Vernon
Establishment : January 01, 1810
Time Zone : Eastern Time Zone
Local time : 00:08:19 (1st April 2023)
Density : 20 Pop. per km² as of 2020
Population growth : -1.83% (2010-2020)
Rockcastle County locator map
Location of Rockcastle County on Kentucky map.
Rockcastle County Kentucky Courthouse image
Rockcastle County Kentucky Courthouse
Rockcastle County Kentucky Courthouse image


Rockcastle County is located at 37°21'55"N 84°18'57"W (37.3651800, -84.3159400). It has 6 neighbors: Garrard County, Jackson County, Laurel County, Lincoln County, Madison County and Pulaski County.

Rockcastle County map

The largest city of Rockcastle County is Mount Vernon with a population of 2,499. Other cities include, Brodhead population 1,185 and Livingston population 213. See all Rockcastle County cities & populated places.

Rockcastle County Populated Places

Cities, Towns, Neighborhoods & Other Populated Places in Rockcastle County.

City Name Population Title
Mount Vernon 2,499 City in Rockcastle County, Kentucky
Brodhead 1,185 Human settlement in Rockcastle County, Kentucky, United States of America
Livingston 213 City in Kentucky, US

Rockcastle County has 6 neighbours.


According to census records, the population of Rockcastle County decreased by 1.83% in 10 years.

Year Population % Change Method
2010 17,056 - census
2011 17,108 0.3% estimation process
2012 17,057 -0.3% estimation process
2013 16,742 -1.88% estimation process
2014 16,826 0.5% estimation process
2015 16,932 0.63% estimation process
2016 16,872 -0.36% estimation process
2017 16,778 -0.56% estimation process
2018 16,823 0.27% estimation process
2019 16,695 -0.77% estimation process
2020 16,750 0.33% estimation process

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Kentucky Other Counties (more counties)

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Meads 288,649 Unincorporated community in Boyd County, Kentucky
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