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Which US State Is the Most Densely Populated?

The most densely populated state in the United States is New Jersey, with about 1,196 people per square mile (about 462 people per square kilometer). New Jersey is one of only three areas in the U.S. that has more than 1,000 people per square mile, with the others being the District of Columbia, which has about 9,857 people per square mile (about 3,806 per square kilometer), and Rhode Island, with about 1,018 people per square mile (about 393 per square kilometer). The population density in the United States is about 76 people per square mile (about 30 people per square kilometer).

More facts about population density:

  • In terms of sheer number of inhabitants, California is the most populous U.S. state, with almost 37 million people. The least populous state is Wyoming, with about 530,000 people.

  • The most densely populated continent in the world is Asia, with more than 200 people per square mile (about 78 per square kilometer). There are only about 32 people per square mile (about 12 per square kilometer) in North America.

  • The world's most densely populated countries and territories include Macau, with more than 48,003 people per square mile (about 18,530 per square kilometer); Monaco, which has about 43,830 people per square mile (about 16,920 per square kilometer); and Singapore, with about 18,513 people per square mile (about 7,148 per square kilometer).
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