California Admission Day (California, United States)

The California Statehood Act, officially An Act for the Admission of the State of California into the Union and also known as the California Admission Act, is the federal legislation that admitted California to the United States as the thirty-first state. Passed in 1850 by the 31st United States Congress, the law made California one of only a few states to become a state without first being an organized territory.

California is a state in the Western United States that lies on the Pacific Coast. It borders Oregon to the north, Nevada and Arizona to the east, and shares an international border with the Mexican state of Baja California to the south. With almost 40 million residents across an area of 163,696 square miles (423,970 km²), it is the largest state by population and third-largest by area.