Tampa-St Petersburg's 2021 population is now estimated at 2,911,376. In 1950, the population of Tampa-St Petersburg was 299,530. Tampa-St Petersburg has grown by 34,102 since 2015, which represents a 1.19% 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 Tampa-St Petersburg, which typically includes Tampa-St Petersburg's population in addition to adjacent suburban areas.