Escondido, CA has a population of 149,912 and is the 171st largest city in the United States. The population density is 4,025 per sq mi which is 1632% higher than the California average and 4343% higher than the national average. The median age in Escondido is 33 which is approximately 8% lower than the California average of 36. In Escondido, 53% of the population over 15 years of age are married, 52% speak English and 41% speak Spanish. 51% of Escondido residents were born in California, 18% were born out of state, 2% were born outside of the United States and 29% were foreign born.