Let's just consider a single city in the United States: Los Angeles. The population of Los Angeles metropolitan area is 13 million people (so, larger than all o

Let's just consider a single city in the United States: Los Angeles. The population of Los Angeles metropolitan area is 13 million people (so, larger than all of Switzerland). Here are some interesting demographic stats about Los Angeles: Less than 60% of people in LA were born in the US. There are less whites (<30%) than hispanics (47%). There are also 10% asians, 10% blacks. On top of that, I can tell you that there are neighborhoods in Los Angeles where specific ethnicities are so concentrated that the street signs are largely or entirely in foreign languages. This is true for the following languages: Japanese, Chinese, Korean, Vietnamese, Thai, Armenian, Russian, Hebrew, Arabic, and Spanish.