As part of Forbes' annual list of the 400 richest people in the world, they took at where the country's wealthiest -- including Bill Gates, Warren Buffett and Oprah Winfrey -- call home. + Homes of the Billionaires
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More From Forbes:
2009 Billionaires | Top Billionaire Cities | Notable Drop-Offs
Find Your Own Mansion:
| Number of homes for sale | 2218 |
| Number of sales last month | 0 |
| Average market value | $1,152,694 |
| Average list price | $1,871,940 |
| Population Density | 27,139 |
| Household Median Income | $44,803 |
| Households | 3,103,575 |
| Cost Of Living | 135 |
| Comfort Index | 45 |
| Private | Public | |
| Elementary School | 79 | 132 |
| Middle School | 7 | 51 |
| High School | 22 | 0 |
| College | 82 | 9 |
| Other | 50 | 38 |