Conceptual_Part_Of US County Lancaster County, PA C3813649 Lancaster County, Pennsylvania Lancaster County PA071 FDA U.S. Census Bureau. (2012). 2009 National ANSI Code File for Counties and County Equivalent Entities. Washington, D.C., Government Printing Office. U.S. Census Bureau. (2012). Retrieved from: http://www.census.gov/geo/reference/docs/codes/national_county.txt Lancaster County, PA Lancaster County, PA C109967 Geographic Area US Counties Terminology Pennsylvania