Atherton Reclaims Title as Most Expensive U.S. ZIP Code Amid Tech Wealth Surge
Atherton, California, has regained its status as the most expensive ZIP code in the United States, surpassing Miami's Fisher Island. This resurgence is driven by a wave of tech wealth, particularly from the booming artificial intelligence industry and successful IPOs in the San Francisco Bay Area. The town, known for its affluent residents, has seen a significant increase in real estate demand, with property sales reaching record highs. In the first half of 2026, the median home price in Atherton surged by 20% to nearly $10 million. The area has already recorded five property sales of at least $30 million this year, nearing the record set in 2025. The influx of capital is transforming the town's landscape, with older homes being replaced by modern mansions, and a heightened focus on private security.