Smith Corner, CA has a population of 744 and is the 17,090th largest city in the United States. The population density is 3,389 per sq mi which is 1358% higher than the California average and 3640% higher than the national average. The median age in Smith Corner is 25 which is approximately 31% lower than the California average of 36. In Smith Corner, 48% of the population over 15 years of age are married, 18% speak English and 82% speak Spanish. 58% of Smith Corner residents were born in California, 1% were born out of state, 0% were born outside of the United States and 42% were foreign born.