Tustin is a city in Orange CountyCalifornia. As of January 1, 2009, the city had an approximate total population of 74,825. The city is located next to the county seatSanta Ana, and does not include the Tustin Foothills.

Because of a top 10% ranking in per capita and one of the shortest commutes in Southern California, the city was chosen in 2009 by Forbes as one of the top 25 towns to live well in America.