Rotterdam consists of 14 submunicipalities: Centrum ('Center'), Charlois (including Heijplaat), Delfshaven, Feijenoord, Hillegersberg-Schiebroek, Hoek van Holland, Hoogvliet, IJsselmonde, Kralingen-Crooswijk, Noord, Overschie, Prins Alexander (the most populous submunicipality with around 85,000 inhabitants), and Rozenburg.
V 90. letih 20. stoletja je Mednarodni olimpijski odbor priznal CISM kot krovno športno organizacijo.