[1]Myerstown is a borough located in Lebanon County, Pennsylvania, United States. It is part of the Lebanon, PA Metropolitan Statistical Area. Myerstown has an estimated 2016 population of 3,183. It is home to over 100 businesses, including a Bayer HealthCare manufacturing plant, Farmer Boy Ag, and Stoneridge Towne Centre. The Evangelical Seminary is located on South College Street.