https://www.siliconvalley.com/2019/10/14/these-bay-area-cities-dominate-rankings-of-highest-gdp/

The high-tech economy just keeps growing and Silicon Valley remains the epicenter of that boom. So it should come as no surprise that the Bay Area dominates the latest national ranking of cities with the highest GDP.

A new report from the personal finance website WalletHub on the fastest growing cities in America cites five Bay Area cities as those with the highest growth in real GDP per capita at 6.41 percent. Milpitas, Santa Clara, Sunnyvale, San Jose and Mountain View are at the top of the list for GDP, or gross domestic product. On the other end of the economic divide is Lafayette, Louisiana, which saw the highest drop in real GDP per capita at 5.76 percent. GDP can be used as an economic snapshot of a region because it is a measure of the monetary value of all finished goods and services made within a region during a specific period.