The state has a population of 2,750,000 (2003 estimate), much more than sparsely populated Baja California Sur to the south. Over 75% of the population live in the cities of Tijuana and Mexicali.
1804: The Spanish colony of California is divided into Alta ("upper") and Baja ("lower") California at the line separating the Franciscan missions in the north from the Dominican missions in the south.
In 1850, after Alta California has been annexed by the United States, Baja California is further divided into northern and southern territories.
1952: Northern Baja California becomes the 29th state of Mexico.
B.C. BajaCalifornia is the northernmost state of Mexico; it is mostly located on the northern half of the BajaCalifornia peninsula.
The state is bordered on the west by the Pacific Ocean, on the east by Sonora and the Sea of Cortez or Gulf of California, and on the south by BajaCalifornia Sur.
Its northern limit is the U.S.-Mexico border, adjacent to the U.S. state of California.
BajaCalifornia or Lower California is a peninsula in the west of Mexico.
The first of several expeditions reached the Gulf of California and BajaCalifornia, and proved that the Island of California was in fact a peninsula.
New Spain's province of California was divided into Alta California and BajaCalifornia on May 19, 1773 near the San Juan Bautista creek by Fray Francisco Palou.