Jundiai's 2021 population is now estimated at 688,192. In 1950, the population of Jundiai was 39,014. Jundiai has grown by 9,671 since 2015, which represents a 1.43% 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 Jundiai, which typically includes Jundiai's population in addition to adjacent suburban areas.