ZIP code
91765
Diamond Bar, CA
91765 covers Diamond Bar in Los Angeles County, with 44,779 people in the ACS 2023 estimate.
Figures are for the Census ZIP Code Tabulation Area (ZCTA), which is not the same as a USPS ZIP code. A PO Box or unique ZIP may have no ZCTA and no demographics. Methodology
U.S. Census Bureau, ACS 2019–2023 5-year (vintage 2023). Geography: ZCTA 91765. Methodology
ZIP code map of 91765

About ZIP code 91765
Acceptable cities: Pomona
More enterprise fields
Commercial ZIP directory · not ACS
Commercial ZIP directory population_count for ZCTA 91765. Not ACS. Methodology
People in 91765
Race
- White8,859
- Black or African American1,664
- American Indian or Alaska Native266
- Asian27,259
- Native Hawaiian and Pacific Islander80
- Other race3,505
- Two or more races4,816
Hispanic or Latino (any race): 9,084
Age
- Under 104,044
- 10 to 195,596
- 20 to 296,053
- 30 to 395,390
- 40 to 496,100
- 50 to 596,996
- 60 to 696,610
- 70 to 793,988
- 80 and older1,672
Income and housing in 91765
Education
- High school graduate92.9%
- Bachelor's degree53.3%
- Graduate degree18.3%
Places covering 91765
Cities and places — Population overlap
Share of this ZIP/ZCTA’s population located within each place, based on ZIP Code Database place-overlap data. This is a population measure, not land-area overlap or the Census-place population.
- Diamond Bar100.0%
- Pomona0.0%
- Rowland Heights0.0%
ZIP Code Database place-overlap table, field percent_of_zip_population_in_place, keyed by place_geoid. Not ACS 2019–2023. Overlap vintage is the shipped overlap table and is separate from ACS. Methodology
Counties — Population overlap
Share of this ZIP/ZCTA’s population located within each county, based on ZIP Code Database county-overlap data. This is a population measure, not land-area overlap or the Census county population.
- Los Angeles County100.0%
ZIP Code Database county-overlap table, field percent_of_zip_population_in_county, keyed by county_geoid. Not ACS 2019–2023. Overlap vintage is the shipped overlap table and is separate from ACS. Methodology
0.0% of this ZIP is outside city limits (a real overlap row, not missing data).
Population history for 91765
Hover the chart or read the table below (Year | ACS | IRS).
| Year | ACS population | IRS population |
|---|---|---|
| 2005 | 48,578 | |
| 2006 | 47,035 | |
| 2007 | 48,422 | |
| 2008 | 46,792 | |
| 2009 | 46,318 | |
| 2010 | 45,914 | |
| 2011 | 47,017 | 45,678 |
| 2012 | 47,433 | 44,870 |
| 2013 | 47,273 | 44,500 |
| 2014 | 47,562 | 44,250 |
| 2015 | 47,598 | 44,130 |
| 2016 | 47,493 | 43,480 |
| 2017 | 47,398 | 43,520 |
| 2018 | 47,139 | 43,520 |
| 2019 | 46,593 | 43,130 |
| 2020 | 46,248 | 43,770 |
| 2021 | 46,270 | 42,950 |
| 2022 | 45,303 | 42,470 |
| 2023 | 44,779 |
ACS: U.S. Census Bureau American Community Survey 5-year estimates. IRS: Statistics of Income ZIP Code data.
ZIP codes near 91765
12 nearest ZIP centroids (any distance)
- 91789Walnut3.3 miPop 40,933 · Income $125,742
- 92823Brea4.0 miPop 5,141 · Income $176,543
- 92821Brea4.4 miPop 42,196 · Income $116,660
- 91766Pomona5.1 miPop 68,673 · Income $77,699
- 91748Rowland Heights5.2 miPop 43,137 · Income $83,455
- 91768Pomona5.6 miPop 34,921 · Income $76,313
- 91709Chino Hills5.7 miPop 78,200 · Income $122,784
- 91792West Covina5.8 miPop 30,921 · Income $96,383
- 92886Yorba Linda6.3 miPop 49,919 · Income $148,170
- 91724Covina6.9 miPop 28,113 · Income $102,129
- 91791West Covina7.0 miPop 33,321 · Income $100,365
- 91710Chino7.5 miPop 80,186 · Income $104,205
ZIP centroids within 2 miles
No other ZIP codes within 2 miles of 91765, measured by Census internal-point centroids. Try a wider radius.
ZIPs within 2 miles of this place
Default is 2 miles. Distances are between ZIP centroids. Widen the radius if nothing is in range.
ZIP code 91765 FAQ
- What city is ZIP code 91765 in?
- 91765 is in Diamond Bar, CA.
- What county is 91765 in?
- 91765 is in Los Angeles County.
- What is the median household income in 91765?
- The median household income in 91765 is $104,737.
- Which ZIP codes are near 91765?
- Use the radius tool on this page to list ZIP codes within a chosen distance of 91765.