Rancho Santa Margarita is a city located in California. With a 2020 population of 47,294, it is the 190th largest city in California and the 839th largest city in the United States. Rancho Santa Margarita is currently declining at a rate of -0.63% annually and its population has decreased by -1.17% since the most recent census, which recorded a population of 47,853 in 2010. Rancho Santa Margarita reached it's highest population of 49,069 in 2014. Spanning over 13 miles, Rancho Santa Margarita has a population density of 3,668 people per square mile.
The average household income in Rancho Santa Margarita is $150,200 with a poverty rate of 3.56%. The median rental costs in recent years comes to $2,084 per month, and the median house value is $662,200. The median age in Rancho Santa Margarita is 38.5 years, 37.9 years for males, and 39 years for females. For every 100 females there are 93.2 males.