Rents are 2% below what Diamond Bar's 10-year trend predicts — a better deal than its own history suggests.
Rent by unit size
These are HUD Fair Market Rents, the payment standard for a Housing Choice Voucher (Section 8). They often differ from the $3,294 market median above, and that is expected: FMR is the 40th percentile of standard-quality units and counts gross rent, so it includes essential utilities such as electricity, water, gas, sewer, and trash. The market median is asking rent, which usually excludes utilities. HUD sets FMR once a year; market rent here updates monthly.
Source: HUD Small Area Fair Market Rents. Read the methodology →
12-month history
Last updated: October 17, 2026
What the numbers show
November. Asking rents in Diamond Bar usually run 0.7% below trend in November and 0.8% above it in August, about $49 a month apart at today's median. Based on 11 years of data.
Rent in Diamond Bar is at its highest level since Zillow's records here began in January 2015.
Rent in Diamond Bar changed +3.0% over the year to September 2026. Across the 336 California cities Zillow tracks, the typical change was +3.4%.
From 2019 to 2024, rent in Diamond Bar rose 39.5% while median household income rose 9.3% ($99,083 to $108,281). Rent outpaced income.
Rent in Diamond Bar is 48.7% higher than in March 2020. Across the US, rent is up 37.3% over the same stretch.
Rent has risen 4 months in a row, and rose in 8 of the last 12 months.
30% of the median household income ($108,281) is $2,707 a month. That covers HUD's Fair Market Rent for up to a 1-bedroom ($2,660); a 2-bedroom is $3,360.
Rowland Heights, 5 miles away, rents for 27% less ($2,421/mo), about $10,500 a year in savings.
From Zillow's monthly rent index (ZORI) for Diamond Bar. 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.
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Who lives here
Diamond Bar, CA is majority owner-occupied, has a large retiree population, has a median income above the national average, 52.8% of residents hold a bachelor's degree or higher.
Source: U.S. Census Bureau · ACS 2024 5-Year Estimates
How Diamond Bar, CA has changed in 5 years
Across the past five years, the going rent in Diamond Bar, CA has shifted from $2,379 to $3,294, up 38.5% since 2021. Local incomes tracked alongside that move, going from a median of $100,776 in 2021 to $108,281 more recently. Because rent grew faster than wages over the same span, the affordability picture has tightened relative to 2021. Census counts show Diamond Bar, CA losing about 1,984 residents over the five-year window, down 3.6% on net. These shifts give renters and would-be renters a longer baseline for sizing up today's listings against the Diamond Bar, CA market of 2021.
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Can you afford rent in Diamond Bar on your salary?
At $3,294/mo, how Diamond Bar rent compares to typical pay (30% rule).
Diamond Bar rent by bedroom count
Median rent for each apartment size in Diamond Bar. Click any size for full breakdown.
Tips for renters in Diamond Bar
Last updated: October 17, 2026
The median rent in Diamond Bar is $3,294/mo as of October 2026. A studio apartment averages $2,380/mo while a 2-bedroom runs $3,360/mo. One-bedroom apartments average $2,660/mo and 3-bedroom units go for $4,270/mo.
At 37% of local median household income ($108,281/yr), Diamond Bar 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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Which nearby cities are cheaper to rent in than Diamond Bar?
At $3,294/mo, rent takes ~37% of Diamond Bar's median household income ($108,281/yr). The standard benchmark is 30%.
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Estimated from ZIP-level data
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