Wasco, CA has a population of 26,061 and is the 1,655th largest city in the United States. The population density is 2,765 per sq mi which is 1090% higher than the California average and 2952% higher than the national average. The median age in Wasco is 28 which is approximately 22% lower than the California average of 36. In Wasco, 43% of the population over 15 years of age are married, 29% speak English and 70% speak Spanish. 64% of Wasco residents were born in California, 8% were born out of state, 0% were born outside of the United States and 28% were foreign born.