91773 ZIP Code Profile, Map, Data & Demographics

Related Place Profiles:
San Dimas, CA

ZIP Code 91773: Basic Data & USPS Preferred City Name

Preferred Name, USPS
San Dimas, CA 91773

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  • ZIP Code Type: STANDARD
  • County: Los Angeles County
  • Centroid: Latitude 34.099, Longitude -117.818
  • Time Zone: Pacific Time Zone (UTC -8 hours)
  • Observes DST: Yes
  • Businesses Addresses: 1,946
  • PO Box Addresses: 987
  • Residential Addresses: 12,007
    • Multi-Family Addresses: 798
    • Single Family Addresses: 11,209

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


San Dimas, CA 91773 Data & Demographics (As of July 1, 2021)


Total Population 34,055 (100%)
Population in Households 33,488 (98.3%)
Population in Families 28,357 (83.3%)
Population in Group Quarters1 567 ( 1.7%)
Population Density 1,275
Diversity Index2 73


Median Household Income $96,685
Average Household Income $118,697
% of Income for Mortgage4 29%
Per Capita Income $42,785
Wealth Index5 153


Total HU (Housing Units) 12,840 (100%)
Owner Occupied HU 8,720 (67.9%)
Renter Occupied HU 3,546 (27.6%)
Vacant Housing Units 574 ( 4.5%)
Median Home Value $668,334
Average Home Value $732,394
Housing Affordability Index3 87


Total Households 12,266
Average Household Size 2.73
Family Households 8,948
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 0.2% 0.06%
Households 0.19% 0.01%
Families 0.21% 0.07%
Median Household Income   2.03%
Per Capita Income   2.67%
Owner Occupied HU   -0.01%

San Dimas, CA 91773 - Peer Comparisons by Rank and Percentile

The table below compares 91773 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 # 512 71st
Population Density # 791 55th
Median Household Income # 448 75th
Housing Affordability Index # 1029 58th
Per Capita Income # 600 66th
Diversity Index # 762 57th

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

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