Fountain Valley is a city located in California. With a 2020 population of 54,745, it is the 168th largest city in California and the 716th largest city in the United States. Fountain Valley is currently declining at a rate of -0.56% annually and its population has decreased by -1.03% since the most recent census, which recorded a population of 55,313 in 2010. Fountain Valley reached it's highest population of 56,671 in 2014. Spanning over 9 miles, Fountain Valley has a population density of 6,035 people per square mile.
The average household income in Fountain Valley is $118,374 with a poverty rate of 7.86%. The median rental costs in recent years comes to $2,034 per month, and the median house value is $734,800. The median age in Fountain Valley is 44.6 years, 43.7 years for males, and 45.4 years for females. For every 100 females there are 94.4 males.