Below are the urban areas with more than 100,000 inhabitants in Mongolia ranked by population.
Urban Area (or urban agglomeration) population refers to the population contained within the contours of a contiguous territory inhabited at urban density levels, typically comprising a city and its surrounding suburban fringe.
| Rank | Urban Area | Population Estimate (2025) | 1 Year Change (over 2024) | Land Area (Km²) | Density (P/Km²) | Global Rank | Projections (2030) | Projections (2050) |
|---|---|---|---|---|---|---|---|---|
| 1 | Ulaanbaatar | 1,596,556 | 1.7% | 241 | 6,625 | 308 | 1,706,639 | 2,068,478 |
| 2 | Erdenet | 88,490 | −0.14% | 16 | 5,531 | 7,017 | 86,901 | 81,472 |
Source: United Nations, Department of Economic and Social Affairs, Population Division (2025). World Urbanization Prospects: The 2025 Revision, Online Edition.