Cowan, CA has a population of 481 and is the 19,774th largest city in the United States. The population density is 3,412 per sq mi which is 1233% higher than the California average and 3666% higher than the national average. The median age in Cowan is 31 which is approximately 13% lower than the California average of 36. In Cowan, 58% of the population over 15 years of age are married, 74% speak English and 26% speak Spanish. 63% of Cowan residents were born in California, 26% were born out of state, 0% were born outside of the United States and 11% were foreign born.