View Jefferson County Real Estate available in Kentucky. Jefferson County sits in Kentucky's Bluegrass Region and is the most populous county in Kentucky. With Louisville within its boundaries, Jefferson County has a number of communities available for home buyers and investors alike. Along with Louisville, Jefferson County also houses Lyndon, Jeffersontown, and Shively. With lots of amenities, from local shops to large retailers that include shopping and dining options, Jefferson County has so much to offer residents. Jefferson County Real Estate comes in all shapes, from condos, patio homes and townhouses to single-family homes, luxury homes and farm land. Contact Semonin Realtors for more information about Jefferson County Real Estate near Louisville, Kentucky.