Final answer:
The population density of the United States is approximately 13.3 people per square mile.
Step-by-step explanation:
To calculate the population density of the United States, we can divide the population by the area. In this case, the population is 11 million and the area is 828,000 square miles.
So, the population density can be calculated as follows:
Population Density = Population / Area
Population Density = 11,000,000 / 828,000
Population Density ≈ 13.3 people per square mile
Therefore, the population density of the United States is approximately 13.3 people per square mile.