Regional Extinction in Korea: When Young People Leave Town

You've probably seen a run-down main street. Customers stop coming, so shops close. With nothing to see or do, even fewer customers show up. A local community fades away in much the same way.

When young people move to the Seoul metropolitan area or another big city for college and jobs, the sound of newborn babies stops in their hometowns. As the number of kids shrinks, elementary schools and daycare centers are the first to close. Then essential clinics, like pediatrics and obstetrics, give up and shut down.

Once the clinics are gone, older residents and families with small children worry about their safety and move to a nearby city. Buses come hours apart. Grocery stores and bank branches pull out. Daily life gets harder and harder.

Finally, the remaining residents can't put up with it anymore and leave too. Only empty houses and abandoned buildings are left. People leaving breaks down local services, and that breakdown pushes even more people out. This vicious cycle of population decline is the core reason a region slowly grinds to a halt.

To be more precise, "regional extinction" in statistics doesn't just mean a town's total population is shrinking. Researchers created a math-based measure called the "regional extinction risk index" to check whether an area still has the strength to renew itself.

The index is calculated by dividing the number of women aged 20 to 39 by the number of people aged 65 and older. Women in their 20s and 30s are statistically the most likely to have children, so they are seen as the main engine for producing the next generation.

When the result falls below 0.5, analyses such as those by the Korea Employment Information Service classify the area as being at "extinction risk." That means there are fewer than one young woman aged 20 to 39 for every two people aged 65 or older. Note that the "population decline areas" designated by the Korean government are set using a different set of indicators.

Today, many rural counties in Korea, and even some districts inside big cities, have already entered the risk zone. This is read as a warning that the base of young people who will have and raise children is getting weaker. Still, some critics argue that one population ratio is not enough to say a place is disappearing.

It's easy to assume a new high-speed rail line or highway will revive a local economy. In reality, the opposite can happen. Easier travel can make the "straw effect" worse: shopping, health care, and cultural spending get sucked out of small towns and into big cities, like drinking through a straw.

Some people argue that instead of spreading budgets thinly across wide areas, we should build up a few hubs. A model that often comes up in this debate is the compact city, which gathers hospitals and shops in a key hub and connects it with transit.

Rather than spending huge sums to build facilities in every rural village, the idea is to strengthen the central area and redesign daily life so people from nearby villages can easily get there by public transportation.

Regional extinction is considered closely tied to overcrowding in the capital region. But when it comes to which responses actually work, there are many different views.