Montclair is a city located in California. With a 2020 population of 40,133, it is the 208th largest city in California and the 979th largest city in the United States. Montclair is currently growing at a rate of 0.87% annually and its population has increased by 9.46% since the most recent census, which recorded a population of 36,664 in 2010. Spanning over 6 miles, Montclair has a population density of 7,277 people per square mile.
The average household income in Montclair is $67,412 with a poverty rate of 17.04%. The median rental costs in recent years comes to $1,269 per month, and the median house value is $334,500. The median age in Montclair is 31.8 years, 30.8 years for males, and 32.9 years for females. For every 100 females there are 94.0 males.