Canada, the United States and Mexico host communities of both Jews (6 million or about 1.8%), Buddhists (3.8 million or 1.1%) and Muslims (3.4 million or 1.0%). The biggest number of Jewish individuals can be found in the United States (5.4 million), Canada (375,000) and Mexico (67,476). The United States host the largest Muslim population in North America with 2.7 million or 0.9%, While Canada host about one million Muslim or 3.2% of the population. While in Mexico there were 3,700 Muslims in the country. In 2012, U-T San Diego estimated U.S. practitioners of Buddhism at 1.2 million people, of whom 40% are living in Southern California.. How many practitioners of Buddhism within the US live in Southern California according to a 2012 estimate?