Fontana (/f?n?tæn?/) is a city of 203,003 residents in San Bernardino County, California. It is now a regional hub of the trucking industry, with Interstate 10 and State Route 210 transecting the city from east to west, and Interstate 15 passing diagonally through its northwestern quadrant.
Fontana was founded in 1913 by Azariel Blanchard Miller. Within a few years it became an agricultural town of citrus orchards, vineyards and chicken ranches astride U.S. Route 66 (now known as Foothill Boulevard). The Fontana area was radically transformed during World War II when Henry J. Kaiser built one of only two steel mills west of the Mississippi River outside the city limits. To provide for the plant workers' health needs, Henry J. Kaiser constructed the Fontana Kaiser Permanente medical facility, now the largest managed care organization in the United States.