Nakhon Pathom's 2021 population is now estimated at 518,433. In 1950, the population of Nakhon Pathom was 23,566. Nakhon Pathom has grown by 15,162 since 2015, which represents a 3.01% 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 Nakhon Pathom, which typically includes Nakhon Pathom's population in addition to adjacent suburban areas.