Data shows that California's GDP hit $4.10 trillion in 2024, superseding Japan, which was marked at $4.01 trillionCalifornia's economy has overtaken that of Japan, making the US state the fourth largest global economy. The data shows that California's gross domestic product (GDP) hit $4.10 trillion in 2024, superseding Japan, which was marked at $4.01 trillion. It is also home to leading technological innovation, the centre of the world's entertainment industry and the country's two largest seaports. However, the levies on China, have led to an all-out trade war with the world's second largest economy. The new data shows California's GDP behind the US at $29.18 trillion, China at $18.74 trillion and Germany at $4.65 trillion.