Alturas, CA has a population of 2,616 and is the 9,568th largest city in the United States. The population density is 926 per sq mi which is 299% higher than the California average and 922% higher than the national average. The median age in Alturas is 43 which is approximately 20% higher than the California average of 36. In Alturas, 57% of the population over 15 years of age are married, 94% speak English and 5% speak Spanish. 64% of Alturas residents were born in California, 33% were born out of state, 0% were born outside of the United States and 3% were foreign born.