Norco, CA has a population of 26,809 and is the 1,609th largest city in the United States. The population density is 1,946 per sq mi which is 738% higher than the California average and 2048% higher than the national average. The median age in Norco is 40 which is approximately 12% higher than the California average of 36. In Norco, 55% of the population over 15 years of age are married, 74% speak English and 22% speak Spanish. 68% of Norco residents were born in California, 18% were born out of state, 1% were born outside of the United States and 13% were foreign born.