Rosemead, CA has a population of 54,507 and is the 740th largest city in the United States. The population density is 10,559 per sq mi which is 4444% higher than the California average and 11555% higher than the national average. The median age in Rosemead is 41 which is approximately 13% higher than the California average of 36. In Rosemead, 56% of the population over 15 years of age are married, 16% speak English and 27% speak Spanish. 40% of Rosemead residents were born in California, 3% were born out of state, 1% were born outside of the United States and 56% were foreign born.