Just as there are several major economic players globally, the US economy, at $29 trillion, is an economic powerhouse to be reckoned with, and official figures for 2023 and 2024 show that the state of California has the largest economy in the US, almost equal to that of India, the world's fifth largest economy. Data from the US Bureau of Economic Analysis and the International Monetary Fund (IMF) indicate a GDP of 3.9 trillion dollars for the California economy, according to visualcapitalist.