1. The population distribution in the United States is not uniform. The Northeast coastal area and the Great Lakes region are densely populated, while the southern and western coastal areas, as well as the inland regions, have a relatively sparse population.2. The reason for the high population density in the Northeast coastal area and the Great Lakes region is due to their abundant coal and iron resources, early development history, solid economic foundation, and developed water and land transportation.3. The residents of the United States are mainly distributed in the East Coast, West Coast, Lower Mississippi River, and the Great Lakes region. The Hawaiian Islands, the Great Lakes region, and the East Coast are the most densely populated areas.4. Immigrants and their descendants are primarily located in California, New York, Florida, Texas, New Jersey, and Illinois. These states account for 70.4% of the total population, with 25.9% of California's population and 36.7% of New York City's population being foreign-born.5. Among major cities, the highest percentage of foreign-born residents is in New York City, at 36.7%, followed by Los Angeles at 29.6%.6. The ten most populous states in the United States and their population numbers are as follows: - California: 39,540,000 - Texas: 28,300,000 - Florida: 20,980,000 - New York: 19,850,000 - Pennsylvania: 12,805,000 - Illinois: 12,802,000 - Ohio: 11,660,000 - Georgia: 10,430,000 - North Carolina: 10,270,000 - Michigan: 9,960,000 - New Jersey: 9,000,000 - Virginia: 8,470,000 - Washington: 7,400,000 - Massachusetts: 6,860,000These statistics illustrate the geographical distribution of the U.S. population and provide an overview of the main regions where people live.