ZIP 91765 MARKET DATA · THREE MONTHS TO SEPTEMBER 2026

91765 (Diamond Bar) housing market data

The median home in ZIP 91765 in Diamond Bar sold for $1,068,186 in the three months to September 2026, +12.4% on a year earlier. 94 homes sold, taking a median 61 days, at 97.8% of list price on average. The Los Angeles County median was $912,957.

$1.07MMedian sale price, three months to September 2026 (+12.4% in a year)
61Median days on market
97.8%Average sale-to-list price
94Homes sold in three months (−24.9% in a year)
$538Median price per square foot
+17.0%Against the Los Angeles County median
MARKET TYPE · THREE MONTHS TO SEPTEMBER 2026Buyer's market

Homes take longer to sell and often close below asking, so buyers can negotiate on price, repairs and terms.

97.8% of list price on average · 21% sold above asking · 61 days on market · 4.6 months of supply, ZIP 91765 in Diamond Bar. How we decide

91765 home prices

Among the 257 Los Angeles County ZIP codes with at least 10 sales, 91765 has the 93rd highest median price and the 191st fastest sales.

How fast homes sell in 91765

Buyers and sellers in 91765

Sold above list price21.7%
Went under contract within two weeks16.5%
New listings in three months128
Homes for sale141
Months of supply4.6

91765 prices by property type

ZIP 91765 by property type, three months to September 2026 (5+ sales)
TypeMedian price1 yearDays on marketSold
Single Family$1,232,689+6.3%4860
Condo/Co-op$534,984+12.3%7628
Townhouse$680,501−15.3%546

What it costs to buy in 91765

At the median price and this week's average 30-year rate, a buyer putting 20% down pays about $6,714 a month in principal, interest and base property tax, before insurance, HOA dues and any special taxes. Lenders commonly cap housing costs at 28% of gross income, which points to a household income of about $287,738. That is 2.7 times the median household income of $105,565. The Census puts the median rent at $2,486 a month, so owning the median home costs about $4,228 a month more than renting, before tax deductions and equity.

What the median ZIP 91765 home costs each month
Median sale price$1,068,186
20% down payment$213,637
Principal and interest, 30-year fixed at 7.24%$5,824 a month
Property tax at the 1% Prop 13 base$890 a month
Household income needed (28% guideline)$287,738 a year
Median household income here (Census)$105,565 a year
Median gross rent here (Census)$2,486 a month

Who lives in 91765

Who lives in ZIP 91765 (Census ACS 5-year, 2024)
Population44,502
Median household income$105,565
Median home value (owners' estimate)$915,100
Median gross rent$2,486 a month
Homes owner-occupied77.5%
Housing units16,078

Nearby ZIP codes

Nearby ZIP codes, three months to September 2026
ZIPAreaMedian price1 yearDays on market
91766Pomona$657,807−2.0%56
91767Pomona$666,804−0.8%45
91768Pomona$660,893+2.6%63
91770Rosemead$913,232−3.8%35
91773San Dimas$834,755−10.2%50
91775San Gabriel$1,299,618−0.0%34
91755Monterey Park$912,232+4.2%34
91754Monterey Park$883,740+4.0%49

Every metric for 91765, month by month

ZIP 91765, rolling three-month figures, last 13 months
Three months toMedian price1 year$/sq ftSoldNew listingsDays on marketSale-to-list
September 2026$1,068,186+12.4%$538941286197.8%
August 2026$1,080,000+8.0%$560971544398.5%
July 2026$1,090,000+10.8%$5631051624299.1%
June 2026$1,128,000+12.9%$567911624299.4%
May 2026$1,149,250+9.8%$560781474699.8%
April 2026$1,139,000+18.3%$570781354599.4%
March 2026$1,089,000+21.0%$567751256399.1%
February 2026$969,500+7.4%$55884876698.7%
January 2026$958,000+0.3%$53775835598.5%
December 2025$968,000−2.2%$55683855198.5%
November 2025$975,000−2.5%$5451061014599.3%
October 2025$988,000+5.7%$5361231215199.1%
September 2025$950,000−1.2%$5221251305399.0%

Taxes and costs

Property tax, transfer tax, Mello-Roos and insurance work the same across Los Angeles County; see the county page for the rules.

COMMON QUESTIONS

91765 housing market,
answered.

What is the median home price in 91765?+

$1,068,186 for homes sold in the three months to September 2026 (Redfin), +17.0% against the Los Angeles County median.

Are home prices going up in 91765?+

The three-month median is +12.4% on a year earlier. With 94 sales in the period, a few unusual sales can move a ZIP median, so read it alongside the county trend.

How fast do homes sell in 91765?+

A median 61 days from listing to accepted offer, against 52 across Los Angeles County.

What area is ZIP 91765?+

ZIP 91765 is in Diamond Bar, Los Angeles County, California.

METHOD AND SOURCES

How this data works

Redfin Data Center figures from the Redfin Data Center. ZIP figures are rolling three-month periods; Redfin uses them because single months in one ZIP are too few sales to be reliable. The area name is from Zillow's ZIP data. The compilation is ours.