American Canyon, CA has a population of 20,334 and is the 2,136th largest city in the United States. The population density is 3,343 per sq mi which is 1338% higher than the California average and 3590% higher than the national average. The median age in American Canyon is 36 which is approximately equal to the California average of 36. In American Canyon, 57% of the population over 15 years of age are married, 52% speak English and 22% speak Spanish. 54% of American Canyon residents were born in California, 11% were born out of state, 2% were born outside of the United States and 34% were foreign born.