Diamond Bar, CA Profile: Facts & Data


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Diamond Bar, California - Basic Facts

The City of Diamond Bar had a population of 57,080 as of July 1, 2018. Diamond Bar 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 Diamond Bar is located at latitude 34.0016 and longitude -117.8176 in Los Angeles County. The formal boundaries for the City of Diamond Bar (see map below) encompass a land area of 14.88 sq. miles and a water area of 0 sq. miles. Los Angeles County is in the Pacific time zone (GMT -8). The elevation is 696 feet.

The City of Diamond Bar (GNIS ID: 2410334) 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 Diamond Bar is located within East San Gabriel Valley CCD of Los Angeles County.

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

Jump to... (On This Page!)
  1. Diamond Bar 2018 Demographic Data
  2. Growth Rates for Diamond Bar (Historical & 5-Year Forecast)
  3. Peer Comparisons (Rank and Percentile)
  1. Neighborhoods Demographics (Home Values, Household Income, etc.)
  2. California Research Tools (Easy Tools & Current Data)
  3. California Data Comparison Tool - 2018 Demographics

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Diamond Bar, CA Data & Demographics (As of July 1, 2018)


Total Population 57,080
Population in Households 56,951
Population in Familes 51,786
Population in Group Qrtrs 129
Population Density2 3,836
Diversity Index3 73


Median Household Income $101,833
Average Household Income $122,927
Per Capita Income $39,489


Total Housing Units 18,852 (100%)
Owner Occupied HU 14,533 (77.1%)
Renter Occupied HU 3,696 (19.6%)
Vacant Housing Units 623 ( 3.3%)
Median Home Value $635,624
Average Home Value $719,005


Total Households 18,229
Average Household Size 3.12
Family Households 15,152
Average Family Size 3
  1. Demographics are point estimates for July 1st of the current year and each for the forecast years. See References for more information.
  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.


2010-2018 2018-2023
Population 0.33% 0.31%
Households 0.23% 0.21%
Families 0.25% 0.24%
Median Household Income   1.76%
Per Capita Income   2.7%

Diamond Bar, CA - Peer Comparisons by Rank and Percentile

The table below compares Diamond Bar 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 # 166 89th
Population Density # 336 78th
Diversity Index # 566 63rd
Median Household Income # 210 86th
Per Capita Income # 417 73rd

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

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California Census Data Comparison Tool

Compare California July 1, 2018 Data
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