Lake Anna has more than 200 miles of shoreline stretching across 3 counties: Louisa, Spotsylvania, and Orange. As a result, Lake Anna has become one of the most sought-after destinations for recreational and full-time living. Lake Anna is 17 miles long with approximately 13,000 acres of water. The more than 200 miles of coastline are dotted with homes, marinas, campgrounds, and a spectacular state park.