Opp City Hall, the seat of government for Opp, Covington County, is located in the Old Post Office, built in the Federal style in 1938. It operated as a post office until 1998.

Opp City Hall, the seat of government for Opp, Covington County, is located in the Old Post Office, built in the Federal style in 1938. It operated as a post office until 1998.