French Valley, CA has a population of 27,949 and is the 1,531st largest city in the United States. The population density is 2,568 per sq mi which is 1005% higher than the California average and 2735% higher than the national average. The median age in French Valley is 32 which is approximately 11% lower than the California average of 36. In French Valley, 62% of the population over 15 years of age are married, 72% speak English and 17% speak Spanish. 63% of French Valley residents were born in California, 20% were born out of state, 3% were born outside of the United States and 14% were foreign born.