Millbrae is a city located in California. With a 2020 population of 22,305, it is the 288th largest city in California and the 1691st largest city in the United States. Millbrae is currently declining at a rate of -0.56% annually but its population has increased by 3.59% since the most recent census, which recorded a population of 21,532 in 2010. Millbrae reached it's highest population of 22,816 in 2015. Spanning over 3 miles, Millbrae has a population density of 6,861 people per square mile.
The average household income in Millbrae is $149,232 with a poverty rate of 4.69%. The median rental costs in recent years comes to $2,320 per month, and the median house value is $1.23 Mn. The median age in Millbrae is 44 years, 41.2 years for males, and 46.4 years for females. For every 100 females there are 96.2 males.