Mariposa, CA has a population of 1,472 and is the 12,799th largest city in the United States. The population density is 485 per sq mi which is 109% higher than the California average and 435% higher than the national average. The median age in Mariposa is 52 which is approximately 44% higher than the California average of 36. In Mariposa, 50% of the population over 15 years of age are married, 91% speak English and 5% speak Spanish. 70% of Mariposa residents were born in California, 25% were born out of state, 1% were born outside of the United States and 4% were foreign born.