Parkland is a small unincorporated community in northern Lincoln County, Oklahoma, United States. It is 4 miles south of Agra. Its name was adopted "to describe the character of the townsite". The land where Parkland is located was opened to white settlement by the Land Run of 1891 on September 28 of that year. The Parkland Post Office was es…Parkland is a small unincorporated community in northern Lincoln County, Oklahoma, United States. It is 4 miles south of Agra. Its name was adopted "to describe the character of the townsite". The land where Parkland is located was opened to white settlement by the Land Run of 1891 on September 28 of that year. The Parkland Post Office was established some three years later, on December 19, 1894, with McShelly Fishback as the first postmaster. The Parkland Post Office was closed on June 15, 1918.