California, constituent state of the United States of America. It was admitted as the 31st state of the union on September 9, 1850, and by the early 1960s it was the most populous U.S. state.
This page features Northern California, often abbreviated NorCal, is the northern portion of the U.S. state of California. Spanning the state's northernmost 48 counties, in contrast to the 10 counties of Southern California,its main population centers include the San Francisco Bay Area (anchored by the cities of San Francisco, San Jose, and Oakland),