Rozenburg is a town and former municipality in the western Netherlands, in the province of South Holland. The municipality had a population of 13,173 in 2004, and covers an area of 6.50 km2. It was the second-smallest municipality in the Netherlands in area. On 10 July 2008, the local council decided to disband the municipality and to form a submunicipality of Rotterdam. This was ratified on 27 October 2009 by the Eerste Kamer, and came into effect on 18 March 2010.