Want to live somewhere quiet? Then the Brussels-Capital Region maybe would not be the place for you. In a country where the population density was highly depended on the region, the Brussels-Capital Region far exceeded the others in terms of residents per square kilometer. Whereas in Brussels over 7,500 people lived per a square kilometer, in the Walloon Region this was only 276. In total, roughly 1.22 million inhabitants lived in the Brussels-Capital Region in 2022.

 Flemish Region has the highest number of inhabitants  

Although the Brussels-Capital Region had the highest population density, it was by no means Belgium’s region with the largest number of inhabitants. On the contrary: both the Flemish and the Walloon Regions had more inhabitants than the Brussels Region. In total, just over ten percent of Belgium’s population lived in Brussels, the rest was divided among Flanders (58 percent) and Wallonia (32 percent).

 Comparison to the other Benelux countries   

Belgium’s population density amounted to 375 inhabitants per square kilometer in 2021. This was significantly lower than the population density in neighboring country the Netherlands, where on average 519 inhabitants lived on a square kilometer. It was however higher than Luxembourg’s population density, which amounted to about 245 inhabitants per square kilometer. This was the lowest population density of all three Benelux countries.

Population density is midyear population divided by land area in square kilometers. Population is based on the de facto definition of population, which counts all residents regardless of legal status or citizenship--except for refugees not permanently settled in the country of asylum, who are generally considered part of the population of their country of origin. Land area is a country's total area, excluding area under inland water bodies, national claims to continental shelf, and exclusive economic zones. In most cases the definition of inland water bodies includes major rivers and lakes.

In 2024, Seoul had the highest population density of all provinces in South Korea, with about ****** people per square kilometer. The port city of Busan, which lies 300 kilometers southeast of Seoul, followed with about ***** residents per square kilometer. With 90 people per square kilometer, Gangwon was the province with the lowest population density. Population of Seoul The capital of South Korea, Seoul, is the country's largest city with a population of nearly 9.5 million people, meaning that about 20 percent of South Korea's total population live in Seoul. Together with the surrounding Gyeonggi Province and Incheon Metropolitan Area, the greater Seoul region (or Seoul Capital Area) is home to half of the total population of South Korea. This region also forms one of the largest metropolitan areas in the world. Solving the problem of overpopulation in Seoul One of the major problems stemming from overpopulation in Seoul is the housing shortage, leading to a significant surge in real estate prices. Over the past few years, several efforts have been made to curb the excessive population concentration and to solve the associated economic and social problems. In 2007, for example, former President Roh Moo-hyun attempted to move the country's administrative capital to Sejong, which is located 120 kilometers south of Seoul. Although the grand plan did not fully work out, around 40 central administrative agencies have since been moved from Seoul to Sejong, turning the city into the de facto administrative capital of South Korea.