Keyes, CA has a population of 7,338 and is the 5,012th largest city in the United States. The population density is 2,594 per sq mi which is 1016% higher than the California average and 2763% higher than the national average. The median age in Keyes is 26 which is approximately 29% lower than the California average of 36. In Keyes, 43% of the population over 15 years of age are married, 44% speak English and 55% speak Spanish. 73% of Keyes residents were born in California, 10% were born out of state, 0% were born outside of the United States and 18% were foreign born.