La Habra – archaic spelling of La Abra – is a city in the northwestern corner of Orange County, California, United States. In the 2010 cens…La Habra – archaic spelling of La Abra – is a city in the northwestern corner of Orange County, California, United States. In the 2010 census, the city had a population of 60,239. The name referred to the "Pass Through the Hills," the natural pass through the hills to the north first discovered and used by Spanish explorers of the Portola expedition on July 30, 1769.