Vista, CA has a population of 98,560 and is the 318th largest city in the United States. The population density is 5,271 per sq mi which is 2168% higher than the California average and 5718% higher than the national average. The median age in Vista is 33 which is approximately 9% lower than the California average of 36. In Vista, 51% of the population over 15 years of age are married, 60% speak English and 35% speak Spanish. 54% of Vista residents were born in California, 20% were born out of state, 1% were born outside of the United States and 25% were foreign born.