5 Wealthiest Counties in the US

3. Santa Clara County

Median Household Income: $130,890

Santa Clara County is a California county that’s the home to Silicon Valley which is arguably the world’s tech capital. As a result, Santa Clara County is the headquarters to a lot of major tech companies such as Apple Inc. (NASDAQ:AAPL) which is the world’s most valuable company. According to the Census, Santa Clara County has a median household income of $130,890.