The recovery is official—at least for millionaires. The number of millionaire households in the U.S. surged by 640,000, or 7 percent, to 9.63 million last year, according to a new study from Spectrem Group. That marks an all-time high for the number of millionaire households in America since Spectrem began tracking the data in 1997. (Read more: The soaring private jet price gap)

It's also the first time the millionaire population has exceeded the pre-crisis peak of 9.2 millionaire households in 2007, showing that last year's stock surge drove a corresponding growth in wealth for the rich. The number of households worth $5 million or more also surpassed its pre-crisis peak for the first time, rising by 100,000 to 1.24 million households. The number of households worth $25 million or more surged by 15,000, to 132,000 households. (Read more: Help wanted—Must take $1M trip)

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