Best PlacesWalnut Valley, Diamond Bar, CA Best Neighborhoods
2026–2027 edition · Data updated July 2026
Every neighborhood in and around Walnut Valley, Diamond Bar, scored on 40 measures of daily life and ranked to fit what matters to you. The coast is close, and the measures below put a number on how close. To work out which city fits you best, start with the best places to live tool.
Walnut Valley, Diamond Bar ranks 2,090th of 5,983 U.S. neighborhoods on the BestNeighborhood index. It scores highest on the weather by a wide margin, and air quality ranks lowest.
The best neighborhoods in Walnut Valley, Diamond Bar
BestNeighborhood is the only ranking that scores 40 measures of daily life neighborhood by neighborhood and lets you re-weight every one of them yourself.
Walnut Valley, Diamond Bar's strengths and weaknesses
Where Walnut Valley, Diamond Bar ranks high
- Nice weatherabout 258 pleasant days a year, better than 95% of neighborhoods
- Big-city accessBetter than 93% of neighborhoods
- Health outlookBetter than 88% of neighborhoods
- Household income$118,822 median, better than 80% of neighborhoods
- School gradeB+, better than 78% of neighborhoods
Where Walnut Valley, Diamond Bar ranks low
- Air qualityBetter than only 4% of neighborhoods
- Short commute32.2 minutes each way, better than only 12% of neighborhoods
- Disaster safetyBetter than only 18% of neighborhoods
- Low income/sales/gas taxBetter than only 20% of neighborhoods
- WalkabilityBetter than only 22% of neighborhoods
What it costs to buy a home in Walnut Valley, Diamond Bar
A household needs to earn about $250,000 a year to comfortably buy the median Walnut Valley, Diamond Bar home, at 20% down and today's 30-year rate. That runs well above the area's median income of $118,822, so buying stretches a typical household.
Where the monthly payment goes
Assumes a 20% down payment, a 6.6% 30-year fixed rate, and a 28% share of income going to the payment. The rate is the 2026-07-23 30-year fixed average, series MORTGAGE30US from the St. Louis Fed, which publishes Freddie Mac's weekly survey. Against the median home value, property tax uses Walnut Valley, Diamond Bar's effective rate of 0.77%, and insurance is estimated at 0.4% of home value a year.
Renting versus buying
At today's prices and rents, renting stays cheaper than buying across the first 10 years here, so the case for buying rests on staying much longer or on prices rising faster than assumed. The chart tracks the running cost of each.
Who lives in Walnut Valley, Diamond Bar
Walnut Valley, Diamond Bar runs older than the country, and households here run larger than average.
Residents by age
Racial and ethnic makeup has its own map. See the race and diversity map for Walnut Valley, Diamond Bar.
Who works in Walnut Valley, Diamond Bar, and how
Work in Walnut Valley, Diamond Bar centers on health care & social and manufacturing. Unemployment is low, and jobs are growing.
Largest industries
How people get to work
- Drive or carpool 79%
- Work from home 18%
- Transit, walk, or bike 3%
Life in Walnut Valley, Diamond Bar
Walnut Valley, Diamond Bar has more restaurants and bars per resident than 68% of neighborhoods and more parkland per resident than 66% of neighborhoods. The coast is about 27 minutes away. Dining, parks, and nightlife concentrates in some parts of Walnut Valley, Diamond Bar and thins out in others, which the map shows.
What the weather is like in Walnut Valley, Diamond Bar, month by month
Walnut Valley, Diamond Bar sees roughly 258 pleasant days a year. July highs average about 90 degrees. January highs sit near 64, with lows near 45. The comfortable stretch runs October through June.
Show the monthly temperatures
| Month | Avg high | Avg | Avg low |
|---|---|---|---|
| January | 64° | 56° | 45° |
| April | 73° | 65° | 52° |
| July | 90° | 80° | 65° |
| October | 81° | 72° | 58° |
Flying in and out of Walnut Valley, Diamond Bar
Ontario International sits about 14 miles away. It is a medium hub and boarded 3.5 million passengers in 2025, with 62 nonstop destinations.
The best schools in and around Walnut Valley, Diamond Bar
Schools across Walnut Valley, Diamond Bar average a B+, better than 78% of neighborhoods.
Top high schools
- Diamond Bar HighA · 78% proficient
- Walnut HighA · 67% proficient
- John A. Rowland HighA− · 59% proficient
Grades come from K-12 test scores, with scores projected for schools missing data. See every Walnut Valley, Diamond Bar school and its grade on SchoolGrade.
Walnut Valley, Diamond Bar measure by measure
Cards are ordered by how much each measure matters to you, so the ones you weighted highest come first. Expand to see every measure. Percentages compare Walnut Valley, Diamond Bar against the other 5,982 neighborhoods.
Who Walnut Valley, Diamond Bar suits
Remote workers
Internet is fast and widely advertised and 18% already work from home.
Retirees
The weather beats 95% of neighborhoods and health care access beats 68%.
Common questions about living in Walnut Valley, Diamond Bar
Is Walnut Valley, Diamond Bar a good place to live?
Using BestNeighborhood's default rankings, Walnut Valley, Diamond Bar ranks 2,090th of 5,983 neighborhoods. It scores highest on the weather, big-city access, and population health, and lowest on air quality and long commutes. How good it is for you depends on which of those you weight most, which the map lets you set.
Is Walnut Valley, Diamond Bar expensive to live in?
The median home is worth $961,960. The overall cost of living runs about 40% above the national average. Set against a $118,822 median income, cost of living beats 53% of neighborhoods.
Is Walnut Valley, Diamond Bar safe?
Yes, Walnut Valley, Diamond Bar is safer than 77% of neighborhoods. Safety varies a lot by neighborhood. Crime costs an estimated $323 per resident a year.
What is the weather like in Walnut Valley, Diamond Bar?
July highs average about 90 degrees, and January highs near 64 with lows near 45. That works out to about 258 pleasant days a year, more than 95% of neighborhoods.
Is Walnut Valley, Diamond Bar good for families?
Schools beat 78% of neighborhoods, crime safety beats 77%, and childcare runs $1,130 a month.
Compare Walnut Valley, Diamond Bar with other neighborhoods
Sources and methodology
Every measure on this page is scored for each neighborhood, then rolled up to Walnut Valley, Diamond Bar. Scores are absolute rather than ranked, which means a 60 in Walnut Valley, Diamond Bar represents the same real quantity as a 60 anywhere else, and the ranking is a weighted average of those absolutes. The map colors come from a national scale calibrated against a population weighted random sample of 5,000 neighborhoods. That absolute scoring is what no other places-to-live ranking does: it puts a single neighborhood, a town, a metro, and a state on one scale, so the same 40 measures answer both which metro to move to and which street inside it to buy on. Read the full methodology.
Walnut Valley, Diamond Bar detail on BestNeighborhood maps:
- Walk Grade for Walnut Valley, Diamond Bar: walkability, transit, and biking, measured on the real street network rather than by straight line distance.
- Noise in Walnut Valley, Diamond Bar: road, rail, and aviation sound modeling calibrated against federal ground truth measurements.
- Conservative vs liberal map of Walnut Valley, Diamond Bar: precinct level election results apportioned to neighborhoods.
- Mobile and cell coverage in Walnut Valley, Diamond Bar: carrier by carrier coverage behind the cell score.
Walnut Valley, Diamond Bar detail on related sites:
- CrimeGrade: neighborhood crime rates behind the crime safety score.
- ISPreports.org: provider by provider internet availability and advertised speeds.
- CoverageWatch: the car insurance premiums behind the cheap car insurance score.
Federal and public data:
- U.S. Census Bureau American Community Survey: income, home value, rent, vacancy, commute time and mode, educational attainment, home age, age structure, household type, industry, and race.
- NOAA Global Surface Summary of the Day: the daily station record behind the monthly temperatures and the pleasant-day count.
- FAA Passenger Boarding Data: airport size and annual passenger counts.
- Freddie Mac Primary Mortgage Market Survey: the 30-year fixed rate used in the cost-to-buy estimate.
- FBI Crime Data Explorer: reported offenses behind the tangible crime cost estimate.
- U.S. EPA Air Quality System: five year average air quality index.
- FEMA National Risk Index: expected annual loss from natural hazards.
- CDC PLACES: disease burden, preventable risk, and barriers to care.
- National Center for Education Statistics: school enrollment and assessment inputs behind the school grade.
- FCC National Broadband Map: internet and wireless availability.
- U.S. Bureau of Labor Statistics: employment and job growth behind the local economy score.
- Religious activity uses a proprietary religious signal measurement.
Your priorities
Move a slider to say how much a measure matters. Zero turns it off.