No. 50 Richest Zip Code: 94507, Alamo, Calif.
No. households:* 5,462
Pct. change in no. households since 2000:* 4.38
Average household income:* $207,916
Average household net worth:* $1,412,271
A quiet suburb of the San Francisco area, 19 miles east of Oakland, Alamo is a wealthy enclave of large lots with great views of 3,864-foot-tall Mount Diablo. In the San Ramon Valley, this Zip Code is dominated by elite couples and singles.
* Data source on all slides: Gadberry Group. Figures are for 2011.
Photography by: Getty Images