Duesseldorf's 2025 population is now estimated at 642,888. In 1950, the population of Duesseldorf was 501,220. Duesseldorf has grown by 1,437 in the last year, which represents a 0.22% annual change.These population estimates and projections come from the latest revision of the UN World Urbanization Prospects. These estimates represent the Urban agglomeration of Duesseldorf, which typically includes Duesseldorf's population in addition to adjacent suburban areas.