The U.S. Census Bureau says that the 10 largest counties have an average population of 2.39 million people, with the nation’s largest cities accounting for more than 70 percent of the total.
There are also several smaller counties with populations of less than 100,000, such as the Polk County in Texas, which has an average of 1,938 people.
Here’s a look at the 10 most populous counties in the United States: Polk County, Texas The most populous county in the nation, Polk County is home to nearly 4.2 million people.
It’s also home to more than 7,000 active military members, which means that the county has some of the most active military bases in the country.
The county has the fifth-highest population of active duty military in the U.N. This is also the county where the National Guard was formed.
Its 1,093 active military personnel, including the Coast Guard and the National Park Service, make it the second-largest active-duty military force in the world, behind only the U