Diamond Bar, CA 91765 ZIP Code Profile

Related Place Profiles:
Diamond Bar, CA | Pomona, CA

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ZIP Code 91765: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Diamond Bar, CA 91765

Acceptable Alternative
Pomona, CA 91765

  • ZIP Code Type: STANDARD
  • Businesses Addresses: 1,318
  • Single Family Addresses: 14,111
  • Multi-Family Addresses: 1,708
  • County: Los Angeles County
  • Centroid: Latitude 34.001, Longitude -117.816
  • Time Zone: Pacific Time Zone (UTC -8 hours)
  • Observes DST: Yes

Neighborhood Data

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91765 ZIP Code Map

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Diamond Bar, CA 91765 Data & Demographics (As of July 1, 2017)


Total Population 48,850
Daytime Population: Workers 14,326
Daytime Population: Residents 24,000
Total Daytime Population (TDP) 38,326
Ratio TDP/Total Population1 0.78
Population in Households 48,731
Population in Familes 43,933
Population in Group Qrtrs 119
Population Density2 3,678
Diversity Index3 74


Median Household Income $99,029
Average Household Income $121,105
Per Capita Income $38,997


Total Housing Units 16,138 (100%)
Owner Occupied HU 12,439 (77.1%)
Renter Occupied HU 3,249 (20.1%)
Vacant Housing Units 450 ( 2.8%)
Median Home Value $602,041
Average Home Value $642,604


Total Households 15,688
Average Household Size 3.11
Family Households 12,916
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 0.7% 0.68%
Households 0.58% 0.61%
Families 0.6% 0.61%
Median Household Income   1.24%
Per Capita Income   2.16%

Diamond Bar, CA 91765 - Peer Comparisons by Rank and Percentile

The table below compares 91765 to the other 1,761 ZIP Codes in California by rank and percentile using July 1, 2017 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 # 244 86th
Population Density # 548 69th
Diversity Index # 723 59th
Median Household Income # 241 86th
Per Capita Income # 538 70th

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

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