Mountain View, CA has a population of 78,827 and is the 441st largest city in the United States. The population density is 6,573 per sq mi which is 2728% higher than the California average and 7154% higher than the national average. The median age in Mountain View is 35 which is approximately 3% lower than the California average of 36. In Mountain View, 53% of the population over 15 years of age are married, 55% speak English and 16% speak Spanish. 37% of Mountain View residents were born in California, 22% were born out of state, 2% were born outside of the United States and 39% were foreign born.