Sadly, your observation is correct. When RICH asians that want to send their children to United States for education, they like to send them to heavily Asian populated areas such as San Francisco, Los Angeles and New York. Since they are already spend tons of money to send their kids to get education in the United States, it is natural they will like to send them into areas with the BEST school district. In Los Angeles, that means areas such as South Pasadena, San Marino, Arcadia, Diamond Bars, PV and etc. You need to spend about $100K/year if you have two kids that are getting school in one of those areas. Housing cost (even Rent), housekeepers, Cars (BMW, Audi, MB.. you get the idea), air flight tickets for your kids and yourselves and other spending. Imagine, if you can afford to spend this much money on your kids getting education here, you don’t think they can easily buy a house for $1 million to $2 million? Those Asians usually buy the house with a lot of cash since they can’t get mortgage deduction from the US government. They are NOT your typical American home buyers. In my opinion, you cannot really analyze those areas with price and local income. It is VERY VERY clear that majority of those foreign buyers DO NOT work in the United States. I hope this information help.