Diamond Bar, California.
Typical home $1,003,951 (+1.3% in a year), asking rent $3,294 (+3.2%). Los Angeles-Long Beach-Anaheim, CA metro.
to buy the typical home at today's mortgage rate — +$2,757 (+110%) since Jan 2020.
- 1 year
- Up $12,512 +1%
- $991,439$1,003,951 since Sep 2025
- 5 years
- Up $186,854 +23%
- $817,097$1,003,951 since Sep 2021
Monthly payment to buy the typical home
Home value × that month's 30-year mortgage rate, 20% down, principal and interest. This is the line households feel: prices and rates compound each other.
- Diamond Bar$5,269
- California$3,997
- United States$1,922
At the last five years' pace, a typical home here doubles in price every 17 years.
Typical home values in Diamond Bar, CA rose 1.3% over the past year — in step with the nation.
Asking rents in Diamond Bar, CA rose 3.2% over the past year — faster than the nation's +2.7%.
Owning the typical home in Diamond Bar runs $3,619/mo more than renting one. The gap peaked at $3,922 in Jan 2025.
That is $6,913 a month against $3,294 rent: a $5,269 mortgage payment, plus $569 property tax and $1,075 insurance & upkeep.
Owning vs renting — Diamond Bar
The owning line is the typical home's monthly payment at that month's rate, plus property tax and insurance & upkeep; the renting line is the typical asking rent; the grey line is the mortgage payment on its own. Same homes, same months, both ways of paying for a roof.
- Owning all in$6,913
- Renting$3,294
- Mortgage only$5,269
Property tax · $569/mo 0.68% of value a year — the ACS 2020-2024 median bill over the median home value for Los Angeles County, CA
Insurance & upkeep · $1,075/mo insurance, maintenance and repairs together, from the BLS Consumer Expenditure Survey — the national figure for mortgaged homeowners, scaled to this market's home value. BLS publishes the three bundled and they cannot be split.
Both are priced off the same month's home value, so they rise with the market. Neither is a quote — a specific home's bill depends on its assessment, its age and its insurer.
Living in Diamond Bar, Los Angeles County, California
Diamond Bar is a city of 55,072 people in Los Angeles County. Half its households earn more than $108,281 a year and half less, against $90,112 across Los Angeles County; 10% of its people live below the poverty line. 77% of its homes are lived in by their owners and 23% are rented. Unemployment in Diamond Bar was 4.4% in August 2026, and Los Angeles County had about as many jobs in 2025 as the year before. The most residents work in schools and health care, then professional services.
Written by AI Claude Sonnet 5.5 wrote this on 23 October 2026 from the figures here, a list of nearby places and what it knows. It can be wrong or out of date.
What it’s like
The place. Diamond Bar is a city in Los Angeles County where the population skews older than in much of the country, and most homes are lived in by their owners. Household incomes run above the county's, and a good share of adults hold a four-year degree. Homes and rents are both expensive, and the poverty rate is modest. Winters are mild, summers are hot, snow is rare, and the year is fairly dry.
Work. Residents work mostly in schools, hospitals and social care, followed by professional and business services, shops and manufacturing. Among the largest workplaces in Diamond Bar are the Walnut Valley Unified school district, the South Coast Air Quality Management District and a Niagara Bottling corporate office. Commutes are fairly long, and a noticeable group of residents work from home. Unemployment has eased compared with a year earlier.
Things to do. The Richard Nixon Presidential Library and Museum is a short drive away. Farther afield, a longer drive reaches Disneyland, the amusement park, and The Huntington Library, Art Museum, and Botanical Gardens, a large botanical garden. Dodger Stadium is also a longer drive away for baseball.
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- 18,005households
- 53%of adults have a degree
- 10%below the poverty line
- 33 mintypical commute
- 18%work from home
What residents work in
Employed residents by industry, from the Census survey. Los Angeles County had 4,525,460 jobs in 2025, about as many as the year before (Bureau of Labor Statistics).
Weather through the year
Coldest in December, with highs near 67° and lows near 42°; warmest in August, with highs near 92° and lows near 63°. About 14 inches of rain a year, and little or no snow.
Average daily high and low, 1991–2020, at the Pomona/fairplex weather station, 6 miles away (NOAA).
Largest workplaces in Diamond Bar
- Niagara Bottling, LLC - CorporateBeverages, naturally carbonated bottled water, manufacturing1,948
- Walnut Valley UnifiedSchool district1,058FTE
- South Coast Air Quality Management District882
- TargetDiscount department stores225
- JFShea Construction-Walnut WaterPumping station, water and sewage system, construction200
- 80 DSI Security Services - Southern CaliforniaSecurity guard services166
- Southcoast Cabinet ShopsCabinets, kitchen, stock or custom wood, manufacturing97
- WalmartSupermarkets and other grocery stores94
Staff on average in 2025, as each workplace reported it to OSHA with its injury records: 13 workplaces with 20 or more staff, 3,886 people in all. School districts come from the Common Core of Data (NCES, 2023–24); FTE marks full-time equivalent staff. Not listed: many offices and banks, which need not report to OSHA; military bases, whose staff OPM withholds; and, in about half the states, city and county governments.
Natural hazards
- EarthquakesRelatively high
- Inland floodingRelatively high
FEMA’s National Risk Index (December 2025) rates the risk each natural hazard poses to the people, buildings and farms in Diamond Bar’s census tracts, against the rest of the country; all of them together, relatively high. It is meant for planning, not a substitute for a local risk assessment or a flood map: FEMA’s index.
From the U.S. Census Bureau’s 2020 census and its American Community Survey (2020–2024 five-year estimates), and the Bureau of Labor Statistics. A survey, so each figure has a margin of error, and figures it is not sure of are left out. More on Los Angeles County and the Los Angeles-Long Beach-Anaheim, CA metro.
Diamond Bar home values
Zillow measures a city over its municipal boundary. Against the state and national figures, mid-tier homes, smoothed and seasonally adjusted.
- Diamond Bar$1,003,951
- California$761,538
- United States$366,157
Sellers are cutting prices on about 1 in 4 Diamond Bar listings, and the typical home goes pending in 47 days — the market is cooling.
When this market ran hot
Each cell is that month's year-on-year home-value growth. Read left to right, top row is the latest year — the 2021–22 band is the boom.
Market heat, inside the city limits
Share of listings with a price cut
The early-warning dial: sellers cut when buyers stop reaching. Rising cuts cool a market months before prices notice.
- Diamond Bar26.47%
- United States26.90%
Days to pending
How long the typical listing takes to go under contract.
- Diamond Bar47
- United States27
Homes for sale
Active for-sale inventory. More supply hands power to buyers.
- Diamond Bar195
New listings per month
Sellers arriving at the market.
- Diamond Bar48
Median sale price
What buyers actually paid — closed sales, not asking prices.
- Diamond Bar$1,053,724
- United States$371,407
Sale-to-list ratio
Above 100%, homes sell over asking; below, buyers negotiate wins.
- Diamond Bar98.29%
Zip codes with a Diamond Bar address
A different geography, not a breakdown. The figure above covers the municipality; these zips cover everywhere the Post Office calls Diamond Bar — often including townships beyond the city limits. Both come straight from Zillow, and they are not expected to average out.