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Place dossier plate
SheetCA-DIAMOND-BAR-CA · Diamond Bar, CA 53,750 pop · income 81st pct
Instrument codes from this place’s ACS population and household income, BEA state COL, FBI safety, national income percentile, photo-finish peer city, home-value band, and matched Census-tract book - not a moving recommendation.
Income neighbourhood around Diamond Bar
Lowest/highest poles plus peers nearest Diamond Bar on median household income. Full ladder: /browse and /rankings.
median HH income
Elkhart · lowest
47,885
Elkhart · lowest
47,885 median HH income
42.7% of the leader · rank #1
Gwynneville · near
106,597
Gwynneville · near
106,597 median HH income
95.0% of the leader · rank #2
Diamond Bar · this city
106,602
Diamond Bar · this city
106,602 median HH income
95.0% of the leader · rank #3
Ankeny · near
106,603
Ankeny · near
106,603 median HH income
95.0% of the leader · rank #4
Madaket · near
106,615
Madaket · near
106,615 median HH income
95.0% of the leader · rank #5
Rolling Hills · near
106,618
Rolling Hills · near
106,618 median HH income
95.0% of the leader · rank #6
Novato · highest
112,193
Novato · highest
112,193 median HH income
100.0% of the leader · rank #7
What this shows Neighbourhood peers only - not a full nationwide city board. Open a near peer when the gap is small; open the poles when the spread is wide.
Compare beyond this state
Nationwide peers by population, income, and FBI crime rate
Out-of-state nearest neighbors for Diamond Bar on ACS population and median household income
, plus FBI UCR reporting rate when the extract covers this place. Link sets are deduped so each column is a distinct comparison path, not a forecast that peers share a labor market or climate.
Similar population
Nearest out-of-state cities by ACS population. This city: 53,750.
Agency-reported UCR totals per 100,000 population, not a neighborhood safety grade or a prediction of personal risk.
Diamond Bar - the verdict
Measured against every US city with at least 1,000 residents, Diamond Bar lands in the 81st percentile for household income and the 34th percentile for safety. Source: Census ACS + FBI UCR.
81st
percentile, household income
96th
percentile, home value
88th
percentile, median rent
34th
percentile, safety
📝 How we sourced this
Population, income, and housing-cost figures come from the U.S. Census Bureau American Community Survey 5-year estimates (B-series tables). Crime data uses FBI UCR; climate uses NOAA Climate Normals; school counts come from NCES Common Core of Data; permits use the Census Building Permits Survey (BPS). See our methodology page for the full ETL pipeline and OMB / FIPS join keys.
Data Snapshot: Diamond Bar, CA
Census ACS 2023 estimates count 53,750 residents in Diamond Bar, a small city within California. Median household income here is $106,602 per year, placing it in the top quartile of U.S. cities for household income, with a poverty rate of 6.9%. Typical homes in Diamond Bar are valued around $867,000, and the median resident age is 45.6 years. About 52.7% of adults hold a bachelor's degree or higher, while 59.1% of working-age residents are in the labor force.
Housing supply pressure shows in Census Building Permit Survey data: 50 residential units were authorized in 2024 (Building Boom), up 213% from five years earlier. Crime here tracks close to the national norm: FBI UCR reporting places total crime at 1940.3 incidents per 100,000 residents, near the national average (voluntary agency reporting, reflects reporting activity, not a definitive danger score).
California carries a cost-of-living premium: the state registers 110.7 on a 100-equals-national-average index (Well Above Average) per BEA Regional Price Parities 2024. A typical two-bedroom carries a HUD Fair Market Rent of $2,053 per month statewide. Statewide, average monthly utility bills in California run around $275, per EIA 2023 residential energy data. Commute times here average 29.0 minutes, with 71.9% driving alone and 16.5% working from home, per Census ACS commuting data. Natural-hazard exposure scores 88.7 out of 100 on FEMA's National Risk Index (Very High).
A decision-led reading path
Useful questions to ask of Diamond Bar's data
How this reading path is ordered
This is not a composite city score. It is a city-specific route through the available public records, ordered for this profile so the page starts with questions the joined data can actually answer. The route here runs from schools and households to comparison shortlist to work and mobility to population change to reported crime to housing and income; another city can have a different sequence or fewer supported layers because the source joins are not uniform.
For Diamond Bar, city-specific coverage includes commute-mode shares, FBI reported-crime rates, local building permits, matched public-school count, annual population history.
No matched row is reported here for within-city Census tract profiles; the page leaves those layers out instead of substituting a statewide or national value.
1. Schools and households
What does the education layer cover for Diamond Bar?
The city has a broader matched school footprint, but count alone does not describe performance, capacity, program availability, or attendance boundaries. This profile deliberately avoids converting it into an unsupported family-friendliness score.
The NCES join finds 10 public schools within the city match. 52.7% of adults age 25+ hold a bachelor's degree or higher in the ACS estimate. These measures answer different questions: the school count describes local institutions, while adult attainment describes residents and cannot be used as a school-quality rating.
Which cities make useful reference points for Diamond Bar?
Use the in-state set to hold state policy and broad price conditions more nearly constant. Use the nationwide size set to ask whether cities with a similar resident count produce different housing, income, or commute outcomes. The income set is a third lens, deliberately separate from population matching. The nationwide peer panel below adds a fourth FBI UCR reporting-rate lens, not personal risk.
Within California, the closest population matches are Colton (53,798 residents, $69,581 income); Huntington Park (53,658 residents, $56,952 income); Yucaipa (54,348 residents, $92,401 income). Outside the state, the closest population matches in this dataset are Aspen Hill, MD (53,752 residents); Elkhart, IN (53,726 residents); Spring Hill, TN (53,585 residents). A third, income-matched reference set of 6 out-of-state cities sits in the income neighbourhood chart near the Place Dossier plate. These are mechanical peer sets, not claims that the places share a labor market, climate, culture, or metro context.
What does the journey to work look like in Diamond Bar?
Driving alone is the largest reported mode at 71.9%. The reported mean trip to work is 29.0 minutes.
Mode share answers how workers usually travel; it does not measure congestion, reliability, distance to a particular job, or the quality of transit service. Remote work has a visible role in the local pattern. That can reduce commute exposure for some workers, but it says nothing about job availability or broadband quality; read it alongside income and housing rather than as a stand-alone lifestyle score.
Is Diamond Bar growing, shrinking, or holding steady?
Census PEP estimates show the population declined by -3,122 residents from 2020 to 2025, a -5.7% change. Separately, Census BPS recorded 50 housing units authorized in 2024. PEP and ACS are different Census series, so the trend is kept separate from the headline ACS population.
Recent estimates point downward. A falling count can reflect migration, household size, annexation boundaries, or estimation noise, so it is a prompt to inspect the full series rather than a claim about local economic health.
These joined records add useful context, but they do not need another full-size panel. Each remains a separate measure with its own geography and source boundary.
Reported crime
What can the FBI record say about safety in Diamond Bar?
The joined FBI UCR record reports 1940.3 violent and property crimes per 100,000 residents, below the 2280.5 national reference used here. The difference is 15% lower in arithmetic terms, but agency participation is voluntary and reporting completeness varies.
Treat this as a reporting-rate comparison, not a prediction of personal risk or a neighborhood-level safety grade. Tourism, daytime population, reporting practices, and variation inside the city are not adjusted away. The state rank and same-state peer table are the narrower comparisons available on this page.
Total reported rate
1940.3
Violent rate
78.2
Property rate
1862.1
FBI Uniform Crime Reporting, incidents per 100,000. Voluntary agency reporting; not a danger score.
How far does income reach against housing in Diamond Bar?
This is a citywide price-to-income reference, not a mortgage-affordability test; it does not include interest rates, taxes, insurance, household size, or an individual buyer's down payment. Housing value is high relative to the citywide income median. That flags a question for comparison, not a verdict: tenure, household composition, financing costs, and the age of the ACS estimate can all change what a resident actually pays.
The home-value-to-income reference is comparatively stretched: the ACS median home value is 8.1 times median household income. The ACS poverty estimate is 6.9%, which keeps the citywide median from describing every household.
Value / income
8.1×
Home value
$867,000
Household income
$106,602
City-level Census ACS 2023 medians. The ratio divides two separate medians and is descriptive only.
Highest-decile cost · BEA RPP 2024, California average
C+
City profile score · Diamond Bar, CA
60/100
5 published dimensions · ACS/FBI 2023
Comparative score against U.S. cities with population of 1,000 or more on Census ACS medians
(income, poverty, bachelor's share, cost of living) and FBI UCR violent-crime rates when
published. Higher means a stronger standing on those published figures, not a livability
rating, not a recommendation to move, buy, or pick a "best" city. Missing inputs drop out
and redistribute weight.
How it is calculated.
Bachelor's+ share A
52.7%
Adults with a bachelor's degree or higher; ACS.
Household income A-
$106,602
Median household income vs U.S. cities (pop ≥1,000); ACS.
Violent crime B+
78 /100k
FBI UCR violent offenses per 100,000 residents; lower is stronger on this axis.
Poverty rate C-
6.9%
Share of residents below the poverty line; lower scores better on this axis.
Cost of living F
110.7 index
BEA state Regional Price Parities index (100 ≈ national average); lower is stronger on this axis. Same value for every city in the state.
Diamond Bar profile (scored ACS/FBI dimensions)Read the chart values
Bachelor's+ share: 86/100 (A) · 52.7%
Household income: 80/100 (A-) · $106,602
Violent crime: 76/100 (B+) · 78 /100k
Poverty rate: 53/100 (C-) · 6.9%
Cost of living: 6/100 (F) · 110.7 index
Where Diamond Bar sits on home value vs crime among peer cities
Diamond Bar's median home value and FBI crime rate plotted with similar-size and
same-state peers (padded with large cities when the peer set is thin). The second
read: pricey does not always mean safer, check which quadrant this city lands in.
Census ACS median home value vs FBI UCR crime rate - Diamond Bar highlighted among 10 peers.Read the chart values
Diamond Bar, CA (this city): home $867,000, crime 1,940/100k
Elkhart, IN : home $126,900, crime 3,595/100k
Spring Hill, TN : home $452,400, crime 663/100k
Logan, UT : home $341,000, crime 1,268/100k
Colton, CA : home $411,100, crime 2,498/100k
Huntington Park, CA : home $557,600, crime 3,812/100k
Yucaipa, CA : home $466,000, crime 1,174/100k
West Sacramento, CA : home $497,100, crime 1,663/100k
San Jacinto, CA : home $391,600, crime 1,982/100k
Novato, CA : home $1,007,100, crime 1,608/100k
How does Diamond Bar compare to other US cities?
Diamond Bar measured against every US city with 1,000+ residents, computed live from the same Census and FBI data shown throughout this page.
Household income81% higher than other cities
Home value96% pricier than other cities
Median rent88% pricier than other cities
Safety34% safer than other cities
"Safer than" reflects total crime rate from FBI UCR; the others use Census ACS estimates.
National percentiles can mask local variation. Looking only at California, Diamond Bar ranks #228 of 441 California cities by lowest crime rate - a narrower, more locally useful cut than the national comparison above.
How we calculate these percentiles & ranks
Each percentile compares Diamond Bar against every qualifying US city; each in-state rank narrows that to California only. Full formula and direction notes: methodology.
California-relative analysis
Median Gross Rent places Diamond Bar near the bottom of California's cities
Among the 1,458 California cities PlainCities tracks with reported median gross rent data, Diamond Bar ranks #1 - the 0th percentile within the state. This is a different, narrower cut than the nationwide percentiles above: it compares Diamond Bar only against its own state's cities, not the full US field.
Median Household Income
#437 of 1,338
67th percentile in California
Median Gross Rent
#1 of 1,458
0th percentile in California
Median Home Value
#314 of 1,343
77th percentile in California
Poverty Rate
#694 of 1,450
52nd percentile in California
Bachelor's Degree or Higher
#247 of 1,458
83rd percentile in California
How in-state ranks are ordered
Ranked by raw value (highest first); a higher rank is not automatically "better" for every measure, see each metric's own context above. This is a comparison within California only, not a livability score. See the methodology for the source and calculation.
Gauge source note
81st percentile nationally for median household income · 34th percentile for safety (lower crime rate). Source: Census ACS 2023 / FBI UCR 2023.
Diamond Bar's profile vs. every US city
Income, affordability, and safety percentile
Diamond Bar's percentile rank on 3 favorable-direction measures (income, affordability, safety) vs. every tracked US city -- higher on every axis is more favorable. Not a composite quality score, just the arithmetic mean of the axes shown.
How Diamond Bar's home value compares nationally
Median home value vs. every US city (population 1,000+)
$867,0004th percentilemore affordable than 4% of 15,600 US cities
Show national distribution
Each bar is a $25K-wide band; taller bars hold more US cities. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source U.S. Census Bureau ACS 5-Year Estimates · 2023
Diamond Bar's home-value-to-income ratio: 8.1×
ACS median home value divided by median household income.
Band
pressured
> 5.0×
National rank
#15,078 of 15,516
More affordable than 3% of tracked cities (pop. 1,000+)
Size class
#692 of 750
Mid-size cities (50,000–199,999)
At 8.1×, Diamond Bar sits in the pressured band:
national rank #15,078 of 15,516 and #692 of 750mid-size cities (50,000–199,999).
Housing value is high relative to the citywide income median, a comparison flag, not a verdict on any household.
How this ratio is calculated
Ratio = Census ACS 2023 median home value ÷ median household income for cities with both fields and population ≥ 1,000.
Rank 1 = lowest ratio (most compact). Bands match the fleet affordability thresholds used on guides (<3.0 / 3.0–5.0 / >5.0).
This is not a mortgage payment estimate and does not include rates, taxes, insurance, or down payment.
Income distribution context
$106,602Diamond Bar, CA median household income (Census ACS)
Show U.S. national quintile / Lorenz context Diamond Bar, CA median household income (Census ACS 5-year) with U.S. national quintile shares for context. Diagonal = equality; the curve is national, not computed for Diamond Bar, CA.
Key socioeconomic indicators
Bachelor's degree or higher (adults 25+)52.7%
Census ACS S1501, educational attainment
Poverty rate (households below FPL)6.9%
Census ACS S1701, poverty status
Labor force participation (adults 16+)59.1%
Census ACS S2301, share of working-age residents in the labor force
Population
53,750
Median Income
$106,602
Median Home Value
$867,000
Median Age
45.6
Poverty Rate
6.9%
Labor force participation
59.1%
Bachelor's Degree+
52.7%
Safety & Crime
Total Crime Rate
1940.3
per 100,000 residents
Violent Crime
78.2
per 100,000 residents
Property Crime
1862.1
per 100,000 residents
Crime reporting caveat
Reflects incidents reported to the FBI's Uniform Crime Reporting program — agency participation is voluntary and reporting completeness varies by jurisdiction and year, so this reflects reporting activity, not a definitive danger score. Not adjusted for tourism, commuter, or daytime population.
Schools
Total Schools
10
Public schools in this city
Population Change
PEP vintage
Annual U.S. Census Bureau Population Estimates Program (PEP) estimates, 2020–2025
Diamond Bar's Census PEP population estimates, 2020–2025.Read the chart as text
Period
Population
2020
55,006 residents
2021
53,847 residents
2022
53,036 residents
2023
52,539 residents
2024
52,288 residents
2025
51,884 residents
Housing Supply
BPS source
Census Bureau Building Permits Survey (BPS) - annual residential permits authorized
📈 Building Boom
Total Permits (2024)
50
housing units authorized
Single-Family
50
detached homes
Multifamily
0
apartments & condos
Supply Intensity
0.9
permits per 1,000 residents
5-Year Permit Trend (2019–2024)
Year
Total
Single-Family
Multifamily
Est. Value
2019
16
16
0
$6.0M
2020
21
21
0
$7.7M
2021
20
20
0
$7.4M
2022
41
41
0
$5.5M
2023
43
43
0
$7.4M
2024
50
50
0
$8.4M
Permit volume increased 213% from 2019 to 2024.
Commute Patterns
Commute source
How workers travel to work, Census ACS 2023
Average Commute Time
29.0 minutes
Drive Alone
71.9%
Carpool
8.9%
Public Transit
1.4%
Walk
0.4%
Work from Home
16.5%
Other
0.9%
Based on 25,950 workers 16 and over.
Monthly Utility Costs
California statewide monthly utility average (EIA 2023): $275
EIA 2023 residential energy data puts average monthly utilities across California at $275 (electricity about $150 , water and sewer about $70 ).
These are California statewide averages, not a meter reading for Diamond Bar. Actual bills vary by home size, usage, and local rates. Source: U.S. Energy Information Administration (EIA) 2023.
Living Costs & Risk
California's BEA cost-of-living index is 110.7 (Well Above Average; US average = 100, RPP 2024). HUD Fair Market Rent for a typical two-bedroom in the county around Diamond Bar is $2,053/mo. FEMA's National Risk Index, averaged to California statewide on PlainCities, rates natural-hazard exposure at 88.7 / 100 (Very High).
Cost/risk geography note
Cost of living is a California statewide BEA average; rent is a county-level HUD Fair Market Rent for the county Diamond Bar sits in; the FEMA hazard score shown here is a statewide average of county NRI inputs, not a parcel-level reading.
How Diamond Bar compares to similar-size California cities
Same-state peer method
Closest same-state population matches, not geographic neighbors. Population + median household income come from Census Bureau ACS 5-year B01001 and B19013.
Source: U.S. Census Bureau ACS 5-Year 2023, FBI UCR, NCES CCD, Census BPS 2024, Census ACS B08301/B08136, U.S. Energy Information Administration (EIA) 2023, BEA Regional Price Parities 2024, HUD Fair Market Rents 2026, FEMA National Risk Index.