View Jefferson County Listings available in Kentucky. Jefferson County stands as Kentucky's most populous county, and with Louisville and other popular Kentucky cities within its boundaries, Jefferson County has much to offer residents. Jefferson County sits in Kentucky's Bluegrass Region, known for its excellent soils and rolling green hills, and the area provides a number of local and national retailers and amenities for all needs and wants. Jefferson County Listings are available to buyers and investors with any budget -- from condos, patio homes and townhouses, to single-family homes and sprawling estates, Jefferson County has all kinds of property types you may need or want. Contact Semonin Realtors for more information about Jefferson County Listings and Jefferson County homes for sale in Louisville, Kentucky.