At least that's according to research company TNS, which is out with its annual survey of millionaire households. L.A. County maintains its top position, with 261,081 seven-figure households, though that’s down 7,000 from a year earlier. OC, ranked fourth nationally with 115,396 millionaires, is also down. Nationwide, there were 9.9 million millionaire households in 2007, a 5.9 percent increase (TNS defines millionaire households as those with at least $1 million in net worth, not including primary residence). The Wealth Report's Robert Frank tries to connect the drop in California millionaires with the real estate collapse, though it seems kind of tenuous (as borne out by the many comments to Frank's posting).

Rank County Millionaire Households
1. Los Angeles Co., Calif. 261,081
2. Cook Co., Ill. 168,422
3. Maricopa Co., Ariz. 126,394
4. Orange Co., Calif. 115,396
5. Harris Co., Texas 107,513
6. San Diego Co., Calif. 100,727
7. King Co., Wash. 75,616
8. Santa Clara Co., Calif. 72,932
9. Nassau Co., N.Y. 71,869
10. Suffolk Co., N.Y. 71,343