The figures listed in the table below come from the 2018 Commune Database (CDB) of Cambodia, published by the National Committee for Sub-National Democratic Development (NCDD). These data are recorded differently to Cambodian census data and significant variations are to be expected between the two due to internal and external migration. The national census does not record population by city, rather by province. The only available method of estimating the population of a city is through the CDB, which is updated every two years.

For instance, the 2018 CDB suggests that 1,474,489 people were living in Phnom Penh municipality,^[1] whereas the 2019 census (which only preliminary results have been released for) suggests 2,129,371.^[2]

The figures listed in the table below are based on the most recently published Commune Database. However, the population in Phnom Penh and other major urban centers, such as Siem Reap, Battambang, and Sihanoukville will be underestimated; while the population in smaller provincial municipalities, particularly those on the border with Thailand, Laos and Vietnam, will be overestimated. The most accurate information is available in the 2019 census, which provides information on the de facto population i.e. the precise population at the time the census was recorded,^[2] rather than official data recorded in Commune offices. To date, no information disaggregated by city is available from any census.

The size of municipal populations is based upon the municipal area and there are other smaller urbanized towns in Cambodia with significant populations, which are part of larger districts, such as Poipet in Banteay Meanchey province. It is not really possible to estimate the population of these urban areas using the CDB.

Cities

More information Name, Province ...

Name	Province	Population[3]	Image
Phnom Penh	Phnom Penh	2,281,951
Siem Reap	Siem Reap	245,494
Battambang	Battambang	119,251
Serei Saophoan	Banteay Meanchey	99,019
Poipet	Banteay Meanchey	98,934
Ta Khmau	Kandal	75,629
Sihanoukville	Sihanoukville	73,036
Samraong	Oddar Meanchey	70,944
Pursat	Pursat	58,355
Stueng Saen	Kampong Thom	53,118
Chbar Mon	Kampong Speu	50,359
Bavet	Svay Rieng	43,783
Doun Kaev	Takéo	43,402
Svay Rieng	Svay Rieng	41,424
Kampong Chhnang	Kampong Chhnang	41,080
Kampong Cham	Kampong Cham	38,365
Pailin	Pailin	37,393
Prey Veng	Prey Veng	36,254
Suong	Tboung Khmum	35,054
Kampot	Kampot	32,053
Banlung	Ratanakiri	30,399
Khemarak Phoumin	Koh Kong	28,836
Kratié	Kratié	28,317
Preah Vihear	Preah Vihear	24,360
Sen Monorom	Mondulkiri	13,195
Kep	Kep	5,470
Koh Rong[4]	Sihanoukville	4,000

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• Administrative divisions of Cambodia