The county was founded in 1792 and was named for Isaac Shelby who was the first Governor of Kentucky. The county was formed off of land given by Jefferson County. Some history about the county, one of the earliest families to settle in Shelby County was that of Daniel Ketcham of Washington County, Maryland. Ketcham, who arrived in 1784, had been a soldier in the American Revolutionary War. He had 9 children, which his oldest, John Ketchum then moved to Indiana and laid the groundwork for the creation of Indiana University. The county has total area of 386 square miles and a popluation count of 42, 074 residents.

Simpson County was established in 1819 from Allen, Logan, and Warren counties. The county is named for captain John Simpson who was a Kentucky militia officer who fought in Battle of Fallen Timbers in the Northwest Indian War and was killed during the War of 1812 in the Battle of River Raisin. The county seat in Franklin , it also has a total area of 236 square miles and a population count of 17, 327 residents.

Spencer County was formed in January 1824, by the 32nd Kentucky General Assembly. The land that now makes up Spencer County was taken from Bullitt, Shelby, and Nelson counties. Spencer County became Kentucky’s 77th county in order of formation. The county was named for Kentucky’s Captain Spier Spencer who fought and died in the Battle of Tippecanoe. Later that year, in December of 1824, Taylorsville was made the county seat however, it wasn’t until 1829 when the city was incorporated. During the Civil War, the courthouse at Taylorsville was burned by Confederate Guerrillas in January 1865, but the county’s records were saved. With all that, the county has a total area of 192 square miles and has a population count of 17, 061 residents.
The county was organized in 1848 in the Highland Rim region. It is named for United States Army General, Zachary Taylor who later became President of the United States. Taylor County was the 100th of the 120 counties created by Kentucky. It was first settled by people from Virginia, Pennsylvania, Maryland, and North Carolina after the American Revolutionary War. The county has a total area of 277 square miles and a total population of over 24,500 residents.
Established in 1820, Todd County was named after Colonel John Todd, who was killed at the Battle of Blue Licks in 1782 during the American Revolution. Todd County is known for its two geographical regions known historically as the high country to the north and low country to the south. The northern highlands consist of steep-sloped sandstone terrain with forests of various wood such as oak, walnut and poplar. The southern lowlands consist of rolling limestone flatlands void of aquifer sinks and consist of dense but sparse forests of the same wood as its northern neighbor with an additional wood called ash. Therefore the county has 377 square miles with a population count of 12,460 residents.
Trigg County was formed in 1820 from portions of Christian and Caldwell counties, as its population had increased. Trigg County was named in honor of Lt. Col. Stephen Trigg of Virginia. Trigg had settled near Harrodsburg, Kentucky during the American Revolutionary War where he served as an officer for the rebels and was killed on August 19, 1782, in the Battle of Blue Licks. Trigg County is governed by a Fiscal Court, which is led by a Judge-Executive. Cadiz (the county seat) has a total area of 481 squre miles ans has a population count of 14,339.
The county was founded in 1837 and is named after Robert Trimble. Trimble was a lawyer and jurist who served as Justice of the Kentucly Court of Appeals, U.S. District Judge of the U.S. District Court for the District of Kentucky and as an Associate Jutice for the U.S. Supreme Court. Its county seat is Bedford and has the counties of Jefferson, Carroll, Henry, Oldham and Clark (Indiana). The county had a total area of 156 square miles and has under 10,000 residents.
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. Its name comes from the unity of squatters from Virginia, European settlers, and immigrants from other countries. The county has a total area of 363 square miles and a population count of 15,007 residents.
Warren County became the 23rd county of Kentucky in order of formation in 1796 from a section of Logan County. It was named after General Joseph Warren of the Revolutionary War. He is known or dispatching William Dawes and Paul Revere on their famous midnight ride to warn residents of the approaching British troops, he is also known for being a hero of the Battleof Bunker Hill. The county has a total area of 548 square miles with a population count of 113,792 residents.
Washington County was established in 1792 from land taken from Nelson County. It was the first county created by the Commonwealth of Kentucky after its separation from Virginia. The Washington County Courthouse was completed in 1816, is the oldest courthouse still in use in Kentucky. The county is named after the first president of the United States, George Washington. With the county having a total area of 301 square miles, it also has a population count of 11,717 residents.