Bangkok — UN urban centre population
Bangkok has a recorded base population of 18,180,280 for the UN urban centre definition (2025 annual estimate). UN DESA, World Urbanization Prospects 2025; the moving counter uses UN 2025–2026 annual growth, not new population observations.
At a glance
Separate UN urban-centre definition
Bangkok UN urban centre: 18,180,280 people (2025), equal to the displayed UN urban centre figure of 18,180,280. Separate GeoNames settlement record: 5,104,476; the UN value is larger (different boundaries; GeoNames population date unavailable). UN WUP 2025 Degree of Urbanisation; not a municipal/province boundary. Association: name/country/coordinates matched; boundary relationship unverified. No containment claim is made.
Administrative units of Bangkok
4 administrative records listed; completeness not established. 4 of 4 population values available; population values and dates not independently verified.
Available-value subtotal: 151,664; not a reconciled total. Shares use the displayed UN urban centre denominator 18,180,280; mixed/unknown dates are not comparable. An em dash means missing, not zero.
| Unit | Population | Share | Membership |
|---|---|---|---|
| Sathorn | 79,624 | 0.44% | Not independently verified |
| Bangkok Riverside | 48,227 | 0.27% | Not independently verified |
| Makkasan | 15,815 | 0.09% | Not independently verified |
| Samphantawong | 7,998 | 0.04% | Not independently verified |
Recorded localities
Gazetteer associations; boundary membership not independently verified.
Bangkok Noi (117,793)
Comparable database records
Same definition label: UN urban centre. Dates/boundaries may still differ; this is not a harmonised international city ranking. Ratios use 18,180,280 as denominator.
| Place | Population | vs Bangkok |
|---|---|---|
| Mexico City | 17,734,212 | −2.5% |
| São Paulo | 18,949,790 | +4.2% |
| Beijing | 17,013,303 | −6.4% |
| Mumbai | 20,203,056 | +11.1% |
| Karachi | 21,422,590 | +17.8% |
About these numbers
Source: UN DESA, World Urbanization Prospects 2025. Reference: 2025 annual estimate. Live method: exponential projection from modelling anchor 2025-01-01 using UN 2025–2026 annual growth (+0.87% per year). This anchor is a modelling convention, not an observed population date. Tiles, ranks and comparisons use the recorded base figure 18,180,280, not the ticking estimate. Country/world denominators are World Bank values and can differ in date and method from local/UN values. Ranks cover only records with the same definition label in this database, not all cities in the world.
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This page is a structured reference entry. Its sources, geographic definition and reference dates determine what the figures mean; it is not independent reporting about the causes of change. Read the accompanying explanation before comparing different places or vintages.