Brea, CA has a population of 41,351 and is the 993rd largest city in the United States. The population density is 3,391 per sq mi which is 1359% higher than the California average and 3643% higher than the national average. The median age in Brea is 38 which is approximately 5% higher than the California average of 36. In Brea, 59% of the population over 15 years of age are married, 70% speak English and 14% speak Spanish. 60% of Brea residents were born in California, 18% were born out of state, 1% were born outside of the United States and 20% were foreign born.