Yuba City, CA has a population of 66,147 and is the 562nd largest city in the United States. The population density is 4,432 per sq mi which is 1807% higher than the California average and 4792% higher than the national average. The median age in Yuba City is 35 which is approximately 4% lower than the California average of 36. In Yuba City, 58% of the population over 15 years of age are married, 60% speak English and 20% speak Spanish. 57% of Yuba City residents were born in California, 16% were born out of state, 2% were born outside of the United States and 25% were foreign born.