Johnson County is located on the southeastern edge of Kentucky just outside Louisa city limits on U S Highway 23 near Kentucky Lake’s northern shoreline surrounded by Lawrence Counties on two sides . Its estimated 2019 population was 21 905 covering an area of 423 sq miles making it one of Kentucky’s smallest counties in terms Land Mass but largest when measured by Population density with 54 people per Sq mile . This region’s economy centers around retail trade coal mining tobacco production industrial works sawmills aquaculture tourism In addition other activities including traditional farming predominantly propping up most rural households . With several charming historic sites museums beautiful parks churches offering exquisite religious services nearby scenic lies close proximity to Kentucky Lake resorts ,it attracts thousands during holiday seasons creating more business opportunities many local entrepreneurs