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. Oldham County is one of Kentucky's wealthiest counties, located northeast of Louisville. Excellent schools, horse farms, and a mix of suburban development and preserved rural character drive premium land values.