Rockcastle County | |
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![]() Rockcastle County courthouse in Mount Vernon | |
![]() Location within the U.S. state of Kentucky | |
![]() Kentucky's location within the U.S. | |
Coordinates: 37°22′N 84°19′W / 37.36°N 84.32°W | |
Country | ![]() |
State | ![]() |
Founded | 1810 |
Named for | Rockcastle River |
Seat | Mount Vernon |
Largest city | Mount Vernon |
Area | |
• Total | 318 sq mi (820 km2) |
• Land | 317 sq mi (820 km2) |
• Water | 1.6 sq mi (4 km2) 0.5% |
Population (2020) | |
• Total | 16,037 |
• Estimate (2023) | 16,190 ![]() |
• Density | 50/sq mi (19/km2) |
Time zone | UTC−5 (Eastern) |
• Summer (DST) | UTC−4 (EDT) |
Congressional district | 5th |
Website | rockcastlecountyky |
Rockcastle County is a county located in the southeastern part of the U.S. state of Kentucky. As of the 2020 census, the population was 16,037.[1] Its county seat is Mt. Vernon.[2] The county was founded in 1810[3] and named for the Rockcastle River, which runs through it. The river, in turn, is named for its majestic rock cliffs. Rockcastle County is part of the Richmond-Berea, KY Micropolitan Statistical Area, which is also included in the Lexington-Fayette–Richmond–Frankfort, KY combined statistical area.