92688 ZIP Code Profile, Map, Data & Demographics

Related Place Profiles:
Rancho Santa Margarita, CA

ZIP Code 92688: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Rancho Santa Margarita, CA 92688

Acceptable Alternative
Rancho Sta Marg, CA 92688
Rcho Sta Marg, CA 92688
RSM, CA 92688

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  • ZIP Code Type: STANDARD
  • County: Orange County
  • Centroid: Latitude 33.651, Longitude -117.594
  • Time Zone: Pacific Time Zone (UTC -8 hours)
  • Observes DST: Yes
  • Businesses Addresses: 1,091
  • PO Box Addresses: 453
  • Residential Addresses: 16,239
    • Multi-Family Addresses: 2,867
    • Single Family Addresses: 13,372

The ZIP Code maps and database are updated 4 times per year.
Database updated: July 1, 2021, Maps updated: May 5, 2021.


Rancho Santa Margarita, CA 92688 Data & Demographics (As of July 1, 2021)


Total Population 44,878 (100%)
Population in Households 44,874 (100.0%)
Population in Families 38,888 (86.7%)
Population in Group Quarters1 4 ( 0.0%)
Population Density 3,453
Diversity Index2 66


Median Household Income $117,872
Average Household Income $146,032
% of Income for Mortgage4 25%
Per Capita Income $50,837
Wealth Index5 174


Total HU (Housing Units) 16,428 (100%)
Owner Occupied HU 10,390 (63.2%)
Renter Occupied HU 5,233 (31.9%)
Vacant Housing Units 805 ( 4.9%)
Median Home Value $686,914
Average Home Value $722,341
Housing Affordability Index3 98


Total Households 15,623
Average Household Size 2.87
Family Households 11,612
Average Family Size 3
  1. Group Quarters - a place where people live or stay in a group living arrangement. Includes college residents halls, nursing facilities, military barracks, and correctional facilities.
  2. 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 races 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.
  3. The Housing Affordability Index base is 100 and represents a balance point where a resident with a median household income can normally qualify to purchase a median price home. Values above 100 indicate increased affordability, while values below 100 indicate decreased affordability.
  4. The % of Income for Mortgage quantifies the percentage of median household income dedicated to mortgage payments on a home priced at the median value (assuming a 30-year mortgage and a 20% down payment).
  5. The Wealth Index is based on a number of indicators of affluence including average household income and average net worth, but it also includes the value of material possessions and resources. It represents the wealth of the area relative to the national level. Values above or below 100 represent above-average wealth or below-average wealth compared to the national level.


2010-2021 2021-2026
Population 0.09% 0.12%
Households -0.04% 0.03%
Families 0.07% 0.05%
Median Household Income   1.99%
Per Capita Income   2.39%
Owner Occupied HU   0.06%

Rancho Santa Margarita, CA 92688 - Peer Comparisons by Rank and Percentile

The table below compares 92688 to the other 1,770 ZIP Codes in California by rank and percentile using July 1, 2021 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 # 297 83rd
Population Density # 567 68th
Median Household Income # 217 88th
Housing Affordability Index # 1274 72nd
Per Capita Income # 397 78th
Diversity Index # 960 46th

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

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