The current metro area population of Seoul in 2020 is 9,963,000, a 0.01% increase from 2019. Population density for Seoul is more concentrated averaging 42,639 residents per square mile (16,463 per square kilometer). Seoul has a population of nearly 10 million. United Nations population projections are also included through the year 2035. In April 2011 Seoul had 10.3 million registered residents, but the capital’s population has seen a steady decline since then. Zooming out to South Korea’s overall land boundaries, population density drops to an average 1,366 Koreans per square mile (527 per square kilometer). Chart and table of South Korea population density from 1950 to 2020. While this is common for any major city, Seoul wins the prize for the highest population density in the world. The metro area population of Seoul in 2019 was 9,962,000, a 0.01% decline from 2018. The nation’s population was 51.3 million inhabitants in July 2020. Seoul’s meteoric economic and population growth has meant that there are a lot of people living in close quarters. The built-up area density in 2000 was 169 persons per hectare, decreasing at an average annual rate of -4.6% since 1991 when the built-up area density was 253.16 persons per hectare. You can view a wealth of information about the city, including the main policies, history, culture, tourism, metropolitan experience, medical welfare, transportation, etc., along with an overall introduction to the city such as Seoul-related videos, photos, and map. Economy Edit In 2017, Seoul Capital Area's gross regional product was ₩870 trillion( US$ 770 billion), generating half of the country's total GDP . Source: Wikipedia, 2020. Cities or countries with high population densities can be considered overpopulated, which can be a problem if the infrastructure is underdeveloped. Mostly all of Seoul's residents are of Korean descent, although there are some small groups of Chinese and Japanese. However, the Seoul Capital Area reached 25,620,000 people by 2015, bringing the chance of reaching a population of 26.31 Million in less than 5 years. Density. The 2010 census by Statistics Korea shows that Seoul is the most densely populated place in the country, with more than 16-thousand people per square kilometer. United Nations projections are also included through the year 2100.  Seoul’s population density is among the highest of the world’s affluent urban areas. Due to its very large population and relatively small area, Seoul is known for its population density which is about 44,776 people per square mile. The Official Website of Seoul. Seoul’s population density has been falling for the past 20 years but it is still the most crowded city in South Korea. The metro area population of Seoul in 2018 was 9,963,000, a 0.22% increase from 2017. Population density shows how cramped or spread out inhabitants are. With population density of 27,000 people per square mile (10,400 per square kilometer), Seoul ranks second in the high income world among urban areas of more than 5 million people, trailing only Hong Kong, which is more than twice as dense. The current population density of South Korea in 2020 is 510.96 people per square kilometer, a 0.09% increase from 2019.; The population density of South Korea in 2019 was 510.52 people per square kilometer, a 0.1% increase from 2018. The population of South Korea itself is roughly 51.5 million. Built-up Area Density in Seoul in 2014 was 119 persons per hectare, decreasing at an average annual rate of -2.5% since 2000. As such, much of the city consists of dense high-rise apartment buildings.