Palmyra is a borough in Burlington County, in the U.S. state of New Jersey. As of the 2020 United States census, the borough's population was 7,438, an increase of 40 from the 2010 census count of 7,398, which in turn reflected an increase of 307 from the 7,091 counted in the 2000 census. The borough, and all of Burlington County, is a part of the Philadelphia-Reading-Camden combined statistical area and the Delaware Valley.