Mongolia is the least densely populated country on Earth, with just 2 people per square kilometer. For context, that’s roughly 3.3 million people spread across a territory larger than France, Germany, and Spain combined. The short answer is that Mongolia’s extreme climate, scarce farmland, and vast stretches of desert and steppe make it nearly impossible to support dense human settlement. But the full picture involves geography, economics, history, and a pastoral way of life that has shaped the land for centuries.
The Climate Is Brutally Extreme
Mongolia sits on a high plateau, landlocked between Russia and China, and its climate is one of the harshest inhabited anywhere. January temperatures average around minus 21°C (minus 6°F), while July averages hover near 17°C (63°F). That’s a seasonal swing of nearly 40 degrees Celsius. Annual precipitation averages only about 240 millimeters (9.4 inches), roughly a quarter of what London receives and comparable to parts of the Sahara fringe. Much of the country qualifies as arid or semi-arid, and the southern third is dominated by the Gobi Desert.
These conditions create a very short growing season and limited natural vegetation. Without reliable rainfall or moderate temperatures, large-scale crop farming never took hold across most of the territory. Cities need nearby food production or cheap transport to sustain large populations, and Mongolia has historically had neither.
Almost No Land Can Be Farmed
Only 0.7% of Mongolia’s land area is arable. That’s an extraordinarily small slice, even compared to other dry countries. Pastures make up roughly 95% of all agricultural land, and about 70% of those pastures have degraded to some extent. The thin, fragile topsoil across most of the steppe simply cannot support the kind of intensive agriculture that feeds dense populations elsewhere in Asia.
This one number explains a lot. Countries with large populations almost always have significant tracts of farmable river valleys, floodplains, or temperate lowlands. Mongolia has a few fertile pockets in the north and east, but the vast interior offers grass and not much else. Historically, that grass supported animals rather than crop fields, which leads directly to the next factor.
A Livestock Economy Needs Space
Mongolia is home to more than 70 million livestock: 32 million sheep, 29 million goats, nearly 5 million cattle, over 4 million horses, and about half a million camels. That’s roughly 21 animals for every person. The entire economy of rural Mongolia revolves around herding these animals across open rangeland, a practice that requires enormous space and low population density by design.
Nomadic and semi-nomadic herding has been the dominant way of life on the Mongolian steppe for thousands of years. Herder families move seasonally to find fresh pasture, and the land simply cannot support both large herds and concentrated human settlement. Growth in livestock output has historically come from increasing herd sizes rather than improving productivity per animal, which means more land gets used, not less. This pastoral system is deeply embedded in Mongolian culture and identity, and it produces a population pattern that looks “empty” by the standards of farming or industrial societies.
Dzud Disasters Push People Off the Land
A dzud is a uniquely Mongolian natural disaster: a severe winter (or combination of summer drought followed by harsh winter) that kills livestock on a massive scale. These events periodically devastate herding families and drive rural depopulation. Between 1990 and 2010, six dzud events were recorded, a sharp increase from the two or three per decade seen in earlier periods.
The 2009-2010 dzud affected 28% of Mongolia’s entire population and triggered a wave of displacement. In one study of 138 herding households, 45 abandoned livestock herding entirely afterward, with most relocating to cities or suburban areas. The 2023-2024 dzud brought similar consequences: mass livestock death, unforeseen costs, declining quality of life, and forced migration away from the countryside. Nearly two-thirds of surveyed households reported livestock losses. Each major dzud event thins out the rural population further and concentrates people in a handful of urban centers.
Nearly Half the Country Lives in One City
The flip side of Mongolia’s empty countryside is the extreme concentration of its population in Ulaanbaatar, the capital. Close to half of all Mongolians live in or around the city. Other provincial centers account for another chunk, leaving the remaining countryside spectacularly sparse. Some provinces the size of European nations have populations in the tens of thousands.
This pattern has intensified over recent decades as herding families displaced by dzud, economic hardship, or the desire for education and healthcare migrate to the capital. Ulaanbaatar’s sprawling ger (yurt) districts on the city’s outskirts are largely populated by former herders. So the emptiness of rural Mongolia is partly a redistribution story: people haven’t left the country, they’ve just concentrated in one spot.
Infrastructure Makes the Interior Hard to Reach
Mongolia’s road network is thin by any measure. Road density sits at just 72 meters per square kilometer, and only about 10% of roads are paved. Based on 2015 estimates, just 39% of the population could reach the nearest city within 30 minutes of travel. Another 13% needed more than three hours. Around 340,000 rural residents lack access to all-season roads entirely.
This creates a feedback loop. Sparse population means there’s little economic incentive to build roads, and poor roads make it harder for people to settle or do business outside established towns. Many parts of the countryside are accessible only by unpaved tracks that become impassable during spring thaw or heavy rain. Without reliable transport links, services like hospitals, schools, and markets stay clustered in provincial capitals and Ulaanbaatar, giving people even less reason to remain in remote areas.
Historical Factors Kept Numbers Low
Mongolia’s population was small long before the modern era. Under Qing Dynasty rule (1644-1912), Mongolia was a frontier territory governed at arm’s length. The Qing period brought periodic armed conflicts, administrative neglect of outer regions, and policies that did little to encourage population growth in Mongolia specifically. While China’s core population boomed during parts of the Qing era, Mongolia remained a sparsely governed pastoral zone.
The 20th century brought Soviet-aligned governance, which modernized healthcare and education but maintained a centrally planned economy that didn’t dramatically alter settlement patterns outside Ulaanbaatar and a few industrial towns. Mongolia’s population has grown steadily in modern times, and its current fertility rate of 2.7 births per woman is above the global replacement level. But starting from a small base, spread across such a vast territory, the country still has a long way to go before its density resembles even other sparsely populated nations like Canada or Australia.
Water Limits Where People Can Settle
While Mongolia has some significant rivers in the north and east, much of the country lacks reliable surface water. The Gobi and central steppe regions depend on wells and seasonal streams that can’t support towns of any meaningful size. Water resources are unevenly distributed: the northern watersheds draining toward Lake Baikal are relatively water-rich, while the southern and western regions are severely water-scarce.
Human settlement has always clustered around water sources, and Mongolia’s hydrology essentially dictates that large portions of the country can support grazing herds but not permanent communities. Even mining operations in the Gobi, which represent a growing part of Mongolia’s economy, face serious water supply challenges that limit how many workers and support towns can operate in the region.