Browse the top real estate properties in Rancho Santa Margarita, California with Property Profile Report. The average listing price of homes in Rancho Santa Margarita is $1,804,976, where the economy and housing-markets are flourishing! Get started by selecting a Zip code above. The most popular zip codes in Rancho Santa Margarita, CA are: 92688, 92679 with a median listing price of $1,804,976.