When people think about busy cities in the United States, they usually think about New York City. It is true that New York City is the most densely populated city in the United States; however, it is not the most densely populated city in the world. Remember that European settlers only started settling in the United States a few hundred years ago. Therefore, New York City has not had nearly as much time to grow as some of the other major cities on Earth. As a result, New York City is not that close to the top of the list when it comes to the most densely populated cities on Earth.
The most densely populated city in the world is Mumbai, located in India. Mumbai has a population of approximately 14,350,000 people. Mumbai itself is about 187 square miles. This means the population density of Mumbai is about 76,790 people per square mile. This is significantly higher than the population density of New York City. There are tens of thousands of people who live in Mumbai who are packed into very tight quarters. Even though there are a lot of very poor people who live in Mumbai, there are also a lot of very wealthy people who live in Mumbai. Mumbai is the home of Bollywood movies, beautiful architecture, and delicious food. At the same time, Mumbai also has sanitation concerns and crime issues.
China is the most heavily populated country on Earth. For a long time, China was looking for a way to shrink its population by limiting the number of children people could have. Despite this effort, China still has very densely populated cities. For example, Shenzhen, located in China, is one of the most densely populated areas on Earth. The city has a population of approximately eight million people, and the city itself is approximately 180 miles. This means it has a population density of 43,000 people per square mile. Even though Shenzhen is not a capital city, it is one of the most densely populated areas in the world. Shenzhen is also known for its very high number of electric cars. Huawei is based in Shenzhen, and it is one of the most valuable companies in the world.
Seoul, which is located in South Korea, is all so densely populated. This is a city that has a population of approximately 17,500,000 people. They are spread out over more than 400 square miles, but the city itself still has a population density of about 43,000 people per square mile. It has a population density that is approximately twice that of New York, but it also has one of the most efficient airports in the world. Seoul is also known for being one of the most technologically advanced cities on Earth.