91790 ZIP Code Profile, Map, Data & Demographics

Related Place Profiles:
West Covina, CA

ZIP Code 91790: Basic Data & USPS Preferred City Name

Preferred Name, USPS
West Covina, CA 91790

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  • ZIP Code Type: STANDARD
  • County: Los Angeles County
  • Centroid: Latitude 34.065, Longitude -117.938
  • Time Zone: Pacific Time Zone (UTC -8 hours)
  • Observes DST: Yes
  • Businesses Addresses: 1,162
  • PO Box Addresses: 0
  • Residential Addresses: 13,308
    • Multi-Family Addresses: 1,777
    • Single Family Addresses: 11,531

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


West Covina, CA 91790 Data & Demographics (As of July 1, 2021)


Total Population 48,355 (100%)
Population in Households 47,997 (99.3%)
Population in Families 42,800 (88.5%)
Population in Group Quarters1 358 ( 0.7%)
Population Density 8,124
Diversity Index2 87


Median Household Income $86,300
Average Household Income $104,103
% of Income for Mortgage4 29%
Per Capita Income $29,477
Wealth Index5 104


Total HU (Housing Units) 14,290 (100%)
Owner Occupied HU 8,687 (60.8%)
Renter Occupied HU 4,997 (35.0%)
Vacant Housing Units 606 ( 4.2%)
Median Home Value $589,502
Average Home Value $614,740
Housing Affordability Index3 86


Total Households 13,684
Average Household Size 3.51
Family Households 11,133
Average Family Size 4
  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 0.46% 0.2%
Households 0.4% 0.13%
Families 0.4% 0.17%
Median Household Income   2.65%
Per Capita Income   2.89%
Owner Occupied HU   0.23%

West Covina, CA 91790 - Peer Comparisons by Rank and Percentile

The table below compares 91790 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 # 243 86th
Population Density # 244 86th
Median Household Income # 591 67th
Housing Affordability Index # 1000 56th
Per Capita Income # 1091 38th
Diversity Index # 189 90th

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

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