Fayette County is home to Lexington, Kentucky's second-largest city and the heart of the Bluegrass Region. Known for horse farms, rolling pastures, and strong land values, Fayette County offers urban amenities alongside agricultural heritage. County seat: Lexington. Logan County is a quiet agricultural county in South Central Kentucky centered on Russellville. Known for productive farmland, low property taxes, and a slower pace of life with easy access to Bowling Green.