The latest U.S. Census Bureau data reveals that the percentage of sandwich homes (households that feature the children, parents, and grandparents) has increased to 4.3% from 3.6% in 2006. Trulia's blog explored the trend and found two big factors behind it: economics and the changing demographic landscape of America.

Additionally, Trulia found the top 10 markets for sandwich homes in the country. In Chicago:

Overall, white households outnumber black, 57.8% to 19.2%, but both racial groups make up a little more than a quarter of sandwich-generation households (29% and 27.6%).

Long Island, New York is the number 8 market and is charactertized by diversity among its sandwich homes:

Nassau and Suffolk counties rank the highest on the list and their sandwich generation households are diverse: 45% white, 18% black, 26% Hispanic, and 9% Asian.

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