Port Glasgow is the second-largest town in the Inverclyde council area of Scotland. The population according to the 1991 census for Port Glasgow was 19,426 persons and in the 2001 census was 16,617 persons. The most recent census in 2011 states that the population has declined to 15,414. It is located immediately to the east of Greenock and was previously a burgh in the county of Renfrewshire.