Housing data for Diamond Bar, CA
Diamond Bar, CA has an estimated 53,355 residents and 18,969 homes (US Census Bureau, 2020–2024 American Community Survey).
It is a city in Los Angeles County.
22.7% of households rent.
The median gross rent is $2,521 a month.
Its population shrank measurably since 2015–2019 (−5.1%).
Figures last updated on .
- Residents
- 53,355 (±61)
- Housing units
- 18,969 (±566)
- Households that rent
- 22.7%
- Median gross rent
- $2,521
- Residents since 2015–2019
- −5.1%
What stands out in Diamond Bar
Households that rent: 22.7% (±2.4 points) in Diamond Bar, lower than in Los Angeles County (54.1%).
Homes in buildings of 5 or more units: 10.2% (±2.0 points) in Diamond Bar, lower than in Los Angeles County (35.9%).
Households without a vehicle: 2.4% (±0.9 points) in Diamond Bar, lower than in Los Angeles County (8.9%).
Median gross rent: $2,521 (±$121) in Diamond Bar, higher than in Los Angeles County ($1,954).
- Renters and owners in Diamond Bar
- Types of homes in Diamond Bar
- Commute and cars in Diamond Bar
- Median rent in Diamond Bar
Housing in Diamond Bar at a glance
- Median rent: $2,521 median gross rent a month
- Rent by bedrooms: $2,364 median gross rent, 2 bedrooms
- Rent burden: 65.1% of renters pay 30% or more of income
- Renters and owners: 22.7% of households rent
- Income and affordability: $108,281 median household income
- Home values: $902,200 median home value
- Homeowner costs: $3,149 median monthly cost with a mortgage
- Property taxes: $6,634 median real estate taxes a year
- Types of homes: 10.2% of homes are in buildings of 5 or more units
- Bedrooms: 77.8% of homes have 3 or more bedrooms
- Age of homes: 49.6% of homes were built before 1980
- Vacancy rate: 1.8% rental vacancy rate
- Heating fuel: 77.5% heat with utility gas
- Commute and cars: 33.3 minutes average trip to work
- Crime reported to police: 124 violent crimes per 100,000 residents
- Growth: −5.1% residents since 2015–2019
- How long people stay: 15.9% moved in since 2020
- Crowding and facilities: 4.4% of homes have more than 1 person per room
- Fair Market Rent: $3,720 Small Area FMR, 2 bedrooms (ZIP 91765)
Diamond Bar against Los Angeles County, its state and the nation
| Diamond Bar | Los Angeles County | California | United States | |
|---|---|---|---|---|
| Residents | 53,355 (±61) | 9,808,667 (exact) | 39,287,377 (exact) | 334,922,499 |
| Housing units | 18,969 (±566) | 3,650,466 (±972) | 14,644,735 (±1,665) | 143,775,355 |
| Households that rent | 22.7% (±2.4 points) | 54.1% (±0.2 points) | 44.1% (±0.2 points) | 34.8% |
| Median gross rent | $2,521 (±$121) | $1,954 (±$6) | $2,036 (±$5) | $1,413 |
| Median household income | $108,281 (±$6,624) | $90,112 (±$392) | $99,122 (±$310) | $80,734 |
| Median home value | $902,200 (±$17,619) | $834,200 (±$2,194) | $734,700 (±$1,307) | $332,700 |
| Median real estate taxes (a year) | $6,634 (±$229) | $5,675 (±$32) | $5,124 (±$17) | $3,119 |
| Built before 1980 | 49.6% (±3.5 points) | 70.4% (±0.3 points) | 56.0% (±0.2 points) | 49.7% |
| Average commute | 33.3 minutes (±1.3) | 30.4 minutes (±0.1) | 28.7 minutes (±0.1) | 26.4 minutes |
| Households with broadband | 96.0% (±1.1 points) | 93.0% (±0.1 points) | 93.5% (±0.1 points) | 91.0% |
| Median age of residents | 45.7 years (±0.9) | 38.2 years (±0.1) | 37.9 years (±0.1) | 38.9 years |
Diamond Bar covers 14.9 square miles of land, about 3,586 residents per square mile (Census Bureau Gazetteer).
How Diamond Bar has changed since 2015–2019
| 2015–2019 | 2020–2024 | Amount of change | Verdict | |
|---|---|---|---|---|
| Residents | 56,211 (±103) | 53,355 (±61) | −5.1% | Measurable decrease |
| Housing units | 18,535 (±423) | 18,969 (±566) | +2.3% | Not a measurable change |
| Median gross rent | $2,071 (±$106) | $2,521 (±$121) | +21.7% | No measurable change after inflation |
| Median home value | $664,400 (±$9,871) | $902,200 (±$17,619) | +35.8% | Up after inflation |
| Median household income | $99,083 (±$4,549) | $108,281 (±$6,624) | +9.3% | Down after inflation |
| Median owner cost with a mortgage | $2,528 (±$79) | $3,149 (±$150) | +24.6% | No measurable change after inflation |
| Median real estate taxes | $4,891 (±$136) | $6,634 (±$229) | +35.6% | Up after inflation |
| Households that rent | 24.0% (±2.2 points) | 22.7% (±2.4 points) | −1.3 percentage points | Not a measurable change |
| Rental vacancy rate | 3.9% (±2.4 points) | 1.8% (±1.8 points) | −2.1 percentage points | Not a measurable change |
The Census Bureau publishes 2015–2019 dollars in 2019 dollars and 2020–2024 dollars in 2024 dollars.
Prices (the CPI-U, US Bureau of Labor Statistics) rose 22.7% between 2019 and 2024, so a dollar figure’s verdict compares the two after raising the earlier one by that much, using the Census Bureau’s test for a difference.
The two periods do not overlap, as the Census Bureau recommends for 5-year estimates.
Crime reported to police in Diamond Bar
In 2025, the Diamond Bar Police Department reported 124 violent and 1,635 property crimes per 100,000 residents to the FBI.
Across Los Angeles County, the departments that report recorded 547 violent and 2,172 property crimes per 100,000 residents that year.
ZIP codes in Diamond Bar
| ZIP code | Share of the ZIP’s land in this place | Residents | Median gross rent | Median home value | Median household income |
|---|---|---|---|---|---|
| 91765 | 70% | 44,502 | $2,486 | $915,100 | $105,565 |
| 91789 | 12% | 40,298 | $2,865 | $975,000 | $125,720 |
A ZIP code is a mail route rather than a boundary, so the Census Bureau publishes figures for ZIP Code Tabulation Areas built from census blocks; the share column says how much of each one’s land lies in this place.
Places near Diamond Bar
| Place | Distance | Median gross rent | Median home value | Households that rent |
|---|---|---|---|---|
| Walnut | 3.3 mi | $3,202 | $1,014,000 | 16.2% |
| Rowland Heights | 4.7 mi | $1,967 | $851,300 | 32.0% |
| South San Jose Hills | 5.0 mi | $1,884 | $544,400 | 21.7% |
| Pomona | 5.1 mi | $1,810 | $593,800 | 46.0% |
| Brea | 5.9 mi | $2,397 | $922,300 | 40.3% |
| West Covina | 6.5 mi | $2,245 | $779,800 | 39.7% |
| Chino Hills | 6.6 mi | $2,894 | $874,900 | 30.8% |
| Valinda | 7.0 mi | $1,829 | $636,700 | 20.7% |
Places in California most like Diamond Bar
| Place | Median gross rent | Median home value | Median household income | Households that rent |
|---|---|---|---|---|
| La Verne | $2,315 | $817,000 | $103,761 | 30.8% |
| San Dimas | $2,278 | $801,800 | $105,321 | 27.6% |
| Benicia | $2,280 | $810,000 | $121,204 | 30.5% |
| Simi Valley | $2,579 | $823,800 | $122,081 | 27.1% |
| Vine Hill | $2,460 | $631,900 | $115,313 | 21.3% |
| Petaluma | $2,440 | $878,600 | $115,430 | 35.5% |
Matched on rent, home value, income, the share who rent, the age of the homes, the share in apartment buildings and the commute, each measured against the spread across California.
HUD Fair Market Rent for Diamond Bar, fiscal year 2027
| Studio | 1 bedroom | 2 bedrooms | 3 bedrooms | 4 bedrooms |
|---|---|---|---|---|
| $2,151 | $2,402 | $2,964 | $3,760 | $4,208 |
HUD also publishes a Small Area Fair Market Rent for each ZIP code in the area; the Fair Market Rent page for this place lists its ZIP codes.
HUD income limits for Diamond Bar, fiscal year 2026
| Household size | Extremely low (30%) | Very low (50%) | Low (80%) |
|---|---|---|---|
| 1 person | $35,000 | $58,300 | $93,300 |
| 2 people | $40,000 | $66,650 | $106,600 |
| 3 people | $45,000 | $74,950 | $119,950 |
| 4 people | $50,000 | $83,300 | $133,250 |
| 5 people | $54,000 | $89,950 | $143,900 |
| 6 people | $58,000 | $96,600 | $154,600 |
| 7 people | $62,000 | $103,250 | $165,250 |
| 8 people | $66,000 | $110,000 | $175,900 |
These are the limits HUD sets for its housing programs in the Los Angeles-Long Beach-Glendale, CA HUD Metro FMR Area, where HUD’s median family income for fiscal year 2026 is $108,100.
A program can use its own limits; tax-credit and local programs often do.
Survey years: 2020–2024 (American Community Survey 5-year estimates), compared with 2015–2019.
Margins of error are at the 90% confidence level.
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Questions about Diamond Bar
What is the average rent in Diamond Bar, CA?
The Census Bureau publishes the median rather than the average: the median gross rent in Diamond Bar is $2,521 (±$121) a month (2020–2024 American Community Survey), so half of renting households pay less and half pay more.
How much is a one-bedroom apartment in Diamond Bar?
The median gross rent for a one-bedroom home in Diamond Bar, CA is $2,258 (±$221) a month (2020–2024 American Community Survey).
Are renters in Diamond Bar rent-burdened?
65.1% of renting households in Diamond Bar pay 30% or more of their income in gross rent, the share housing researchers usually call rent-burdened (2020–2024 American Community Survey).
How many renters are there in Diamond Bar?
Diamond Bar has an estimated 4,088 (±416) renting households, 22.7% of its occupied homes (2020–2024 American Community Survey).
What is the median household income in Diamond Bar?
The median household income in Diamond Bar is $108,281 (±$6,624) a year (2020–2024 American Community Survey).
What is the average home value in Diamond Bar, CA?
The Census Bureau publishes the median: $902,200 (±$17,619) for owner-occupied homes in Diamond Bar (2020–2024 American Community Survey).
Is Diamond Bar growing?
In Diamond Bar, the number of residents went from 56,211 in 2015–2019 to 53,355 in 2020–2024 (−5.1%), a measurable decrease.
What ZIP codes are in Diamond Bar?
The ZIP codes that cover Diamond Bar are 91765, 91789.
What is the median rent in ZIP code 91765?
The median gross rent in ZIP Code Tabulation Area 91765 is $2,486 (±$120) a month (2020–2024 American Community Survey).
Sources
- Demographic and Housing Estimates (DP05), 2020–2024 ACS 5-year estimates — Diamond Bar city, California
- Selected Housing Characteristics (DP04), 2020–2024 ACS 5-year estimates — Diamond Bar city, California
- Selected Economic Characteristics (DP03), 2020–2024 ACS 5-year estimates — Diamond Bar city, California
- Median Real Estate Taxes Paid by Mortgage Status (B25103), 2020–2024 ACS 5-year estimates — Diamond Bar city, California
- Selected Social Characteristics (DP02), 2020–2024 ACS 5-year estimates — Diamond Bar city, California
- Total Population (B01003), 2015–2019 ACS 5-year estimates — Diamond Bar city, California
- Median Gross Rent (B25064), 2015–2019 ACS 5-year estimates — Diamond Bar city, California
- HUD Fair Market Rents, fiscal year 2027: Los Angeles-Long Beach-Glendale, CA HUD Metro FMR Area
- HUD Small Area Fair Market Rents, fiscal year 2027
- HUD Income Limits, fiscal year 2026: Los Angeles-Long Beach-Glendale, CA HUD Metro FMR Area
- US Census Bureau, American Community Survey 2020–2024 5-year estimates for ZIP Code Tabulation Areas
- FBI Uniform Crime Reporting Program, Crime Data Explorer: Diamond Bar Police Department (ORI CA0191W0X)
- FBI: Uniform Crime Reporting statistics and their proper use
- Consumer Price Index for All Urban Consumers (CPI-U), US city average, all items, US Bureau of Labor Statistics: annual averages 2019 and 2024
- US Census Bureau, 2024 Gazetteer Files
To check these figures in the Census Bureau’s own API, request the variables below from the 2024 ACS 5-year data profile (acs/acs5/profile) for Diamond Bar city, California (place:19192, in state:06).
Each estimate (E or PE) has a margin of error beside it (M or PM).
The 2015–2019 figures are B01003_001E, B01003_001M, B25064_001E, B25064_001M from the 2019 release.
The API needs a free key.
DP05_0001E, DP05_0001M, DP04_0001E, DP04_0001M, DP04_0047PE, DP04_0047PM, DP04_0134E, DP04_0134M, DP03_0062E, DP03_0062M, DP04_0089E, DP04_0089M
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.
Figures are published by the US Census Bureau, HUD, the Bureau of Labor Statistics and the FBI; Seayora reproduces them and does not adjust them, except where a sentence says it compares dollar figures after inflation. They describe the whole place, not any one building or street, and are not an appraisal, a rent determination, a tax bill, a safety rating or legal advice.
Figures last updated on .