ZIP 91765
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12-month history
Last updated: October 17, 2026
What the numbers show
November. Asking rents in ZIP 91765 usually run 0.9% below trend in November and 1% above it in August, about $63 a month apart at today's median. Based on 11 years of data.
Rent in ZIP 91765 is at its highest level since Zillow's records here began in January 2015.
Rent in ZIP 91765 changed +3.0% over the year to September 2026. Across the 819 California ZIP codes Zillow tracks, the typical change was +3.2%.
From 2019 to 2024, rent in ZIP 91765 rose 40.9% while median household income rose 5.1% ($100,480 to $105,565). Rent outpaced income.
Rent has risen 4 months in a row, and rose in 8 of the last 12 months.
30% of the median household income ($105,565) is $2,639 a month. That covers HUD's Fair Market Rent for up to a 1-bedroom ($2,630); a 2-bedroom is $3,280.
ZIP 91748, 5 miles away, rents for 28% less ($2,390/mo), about $11,100 a year in savings.
From Zillow's monthly rent index (ZORI) for ZIP 91765. The seasonal pattern compares Zillow’s seasonally adjusted and unadjusted series. Income is the Census median household income (5-year estimates). Fair Market Rents are HUD’s, which include utilities.
Who lives here
ZIP 91765 (Diamond Bar, CA) is majority owner-occupied, has a large retiree population, has a median income above the national average, 53.7% of residents hold a bachelor's degree or higher.
Source: U.S. Census Bureau · ACS 2024 5-Year Estimates
How ZIP 91765 in Diamond Bar, CA has changed in 5 years
Rent in ZIP 91765 in Diamond Bar, CA has climbed 39.7% since 2021, going from about $2,373 per month to roughly $3,315 today. Median household income grew from $99,705 to $105,565 between 2021 and 2024, a 5.9% shift. Rent outpaced income growth by roughly 33.8 percentage points, which means renters are spending a larger slice of each paycheck on housing than they did in 2021. Headcount in the area went from 46,270 to 44,502 between 2021 and 2024, a 3.8% change. Taken together, the five-year picture in ZIP 91765 in Diamond Bar, CA reflects how housing costs and the people paying them have evolved through a stretch that included a pandemic, a hot rental market, and a recent cooling phase.
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Tips for renters in ZIP 91765
Last updated: October 17, 2026
ZIP code 91765 covers Diamond Bar, CA. The median rent here is $3,315/mo as of October 2026. A 1-bedroom rents for a median of $2,630/mo. A 2-bedroom rents for a median of $3,280/mo.
At 38% of local median household income ($105,565/yr), ZIP 91765 ranks as moderate compared to the national benchmark of 30%. Rents have increased 3.0% over the past year.
Frequently asked questions
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How does ZIP 91765 compare to the rest of Diamond Bar?
At $3,315/mo, rent takes ~38% of ZIP 91765's median household income ($105,565/yr). The standard benchmark is 30%.
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