Copperopolis, CA has a population of 4,099 and is the 7,335th largest city in the United States. The population density is 197 per sq mi which is 15% lower than the California average and 118% higher than the national average. The median age in Copperopolis is 42 which is approximately 18% higher than the California average of 36. In Copperopolis, 60% of the population over 15 years of age are married, 93% speak English and 5% speak Spanish. 75% of Copperopolis residents were born in California, 19% were born out of state, 1% were born outside of the United States and 5% were foreign born.