Montclair is a city located in California. With a 2020 population of 41,601, it is the 204th largest city in California and the 941st largest city in the United States. Montclair is currently growing at a rate of 1.86% annually and its population has increased by 13.47% since the most recent census, which recorded a population of 36,664 in 2010. Montclair reached it's highest population of 41,601 in 2021. Spanning over 6 miles, Montclair has a population density of 7,543 people per square mile.
The average household income in Montclair is $73,753 with a poverty rate of 14.55%. The median rental costs in recent years comes to $1,405 per month, and the median house value is $354,500. The median age in Montclair is 32.5 years, 31.4 years for males, and 33.4 years for females. For every 100 females there are 96.0 males.