Adams County, PA has an estimated population of 101,714 people living in approximately 519 square miles. The county seat is Gettysburg. Adams County was created on January 22, 1800 and was named after John Adams, the second President of the United States. Adams County is serviced by WellSpan Gettysburg Hospital. No matter where you have been hospitalized, Grane Hospice Care services are available to you and provide hospice services in Adams County PA.