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With home prices setting record highs month after month—reaching a remarkable nationwide median of $405,000 in March—just about all homebuyers are grumbling these days that they can’t get a break.

But if you’ve ever wondered just how high prices can go, it’s time to stop talking in generalities and get specific. In real estate terms, this means homing in on the five digits known as ZIP codes.

As “Beverly Hills, 90210” made all too clear, certain ZIP codes serve as glittery epicenters of wealth, with block-to-block megamansions that only the richest could fathom buying. And even if you’d never even think of settling down in such posh environs, it’s still fascinating to get a glimpse of where the richest 1% live—and what they pay.