Landisville, Pennsylvania  Landisville, Pennsylvania is a census-designated place located in East Hempfield Township in Lancaster County in the state of Pennsylvania. It is located along Pennsylvania Route 283 just outside the city of Lancaster. The community was once part of the Salunga-Landisville CDP, before splitting into two separate CDPs for the 2010 census, the other being Salunga. As of the 2010 census the population was 1,893 residents.