Palmer Park is an unincorporated community in Prince George's County, Maryland, United States, within the census-designated place of Landover. It was previously a CDP of its own until 2000. Palmer Park was adjacent to Wilson Dairy Farm. FedEx Field is now located on what used to be the farm from the 1750s to the 1990s. Palmer Park was an enclave of po…Palmer Park is an unincorporated community in Prince George's County, Maryland, United States, within the census-designated place of Landover. It was previously a CDP of its own until 2000. Palmer Park was adjacent to Wilson Dairy Farm. FedEx Field is now located on what used to be the farm from the 1750s to the 1990s. Palmer Park was an enclave of post-World War II triplex housing units designed as starter homes for young low-income families. It is surrounded by three parks.