Rancho Santa Margarita, CA Profile: Facts, Map & Data


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Rancho Santa Margarita, California - Basic Facts

The City of Rancho Santa Margarita had a population of 49,464 as of July 1, 2018. Rancho Santa Margarita ranks in the upper quartile for Population Density when compared to the other cities, towns and Census Designated Places (CDPs) in California. See peer rankings below.

The primary coordinate point for Rancho Santa Margarita is located at latitude 33.6324 and longitude -117.599 in Orange County. The formal boundaries for the City of Rancho Santa Margarita (see map below) encompass a land area of 12.9 sq. miles and a water area of 0.04 sq. miles. Orange County is in the Pacific time zone (GMT -8). The elevation is 932 feet.

The City of Rancho Santa Margarita (GNIS ID: 2411517) has a C1 Census Class Code which indicates an active incorporated place that does not serve as a county subdivision equivalent. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.

California is one of 20 states where Census County Divisions (CCDs) are used for statistical tracking of subdivisions within each county. The City of Rancho Santa Margarita is located within Mission Viejo CCD of Orange County.

Beneath the boundary map are tables with Rancho Santa Margarita population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2018.

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City of Rancho Santa Margarita, CA Boundary Map

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Rancho Santa Margarita, CA Data & Demographics (As of July 1, 2018)


Total Population 49,464
Population in Households 49,462
Population in Familes 43,490
Population in Group Qrtrs 2
Population Density2 3,835
Diversity Index3 62


Median Household Income $111,466
Average Household Income $138,285
Per Capita Income $47,364


Total Housing Units 17,542 (100%)
Owner Occupied HU 11,929 (68.0%)
Renter Occupied HU 5,053 (28.8%)
Vacant Housing Units 561 ( 3.2%)
Median Home Value $638,616
Average Home Value $687,267


Total Households 16,981
Average Household Size 2.91
Family Households 12,879
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.


2010-2017 2017-2022
Population 0.51% 0.55%
Households 0.32% 0.41%
Families 0.43% 0.44%
Median Household Income   1.84%
Per Capita Income   2.62%

Rancho Santa Margarita, CA - Peer Comparisons by Rank and Percentile

The table below compares Rancho Santa Margarita to the other 1,516 incorporated cities, towns and CDPs in California by rank and percentile using July 1, 2018 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 192 87th
Population Density # 338 78th
Diversity Index # 798 47th
Median Household Income # 142 91st
Per Capita Income # 296 81st

Additional comparisons and rankings can be made with a VERY EASY TO USE California Census Data Comparison Tool.

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