East Quincy, CA has a population of 2,749 and is the 9,254th largest city in the United States. The population density is 227 per sq mi which is 2% lower than the California average and 151% higher than the national average. The median age in East Quincy is 42 which is approximately 16% higher than the California average of 36. In East Quincy, 57% of the population over 15 years of age are married, 93% speak English and 4% speak Spanish. 72% of East Quincy residents were born in California, 22% were born out of state, 1% were born outside of the United States and 4% were foreign born.