Rancho Santa Margarita is a city located in California. With a 2020 population of 47,791, it is the 188th largest city in California and the 827th largest city in the United States. Rancho Santa Margarita is currently declining at a rate of -0.56% annually and its population has decreased by -0.13% since the most recent census, which recorded a population of 47,853 in 2010. Rancho Santa Margarita reached it's highest population of 49,108 in 2014. Spanning over 13 miles, Rancho Santa Margarita has a population density of 3,706 people per square mile.
The average household income in Rancho Santa Margarita is $142,744 with a poverty rate of 4.17%. The median rental costs in recent years comes to $1,953 per month, and the median house value is $652,400. The median age in Rancho Santa Margarita is 37.6 years, 36.1 years for males, and 39.1 years for females. For every 100 females there are 94.5 males.