Simi Valley is a city located in Ventura County California. With a 2020 population of 125,963, it is the 47th largest city in California and the 222nd largest city in the United States . Simi Valley is currently growing at a rate of 0.14% annually and its population has increased by 1.39% since the most recent census, which recorded a population of 124,237 in 2010. Simi Valley reached it's highest population of 126,239 in 2014. Spanning over 42 miles, Simi Valley has a population density of 3,033 people per square mile.
The average household income in Simi Valley is $123,072 with a poverty rate of 6.36%. The median rental costs in recent years comes to $2,023 per month, and the median house value is $584,900. The median age in Simi Valley is 40.6 years, 39.9 years for males, and 41.1 years for females.