Non-house-banked card games like poker have always been legal in California, even when some other card games were outlawed in 1872. The state legalized pari-mutuel betting on horse races in 1933, and in 1984, voters approved the state lottery. It is also known as a progressive state that has legalized many forms of gambling. With over 39.5 million people, California is the most populous state in the US. California borders the Pacific Ocean, Oregon, Nevada and Arizona, and Mexico.