91765 vs 92821 — Compare ZIP Codes
Side-by-side comparison. Blue = ZIP 91765, Orange = ZIP 92821.
Quick verdict: ZIP 91765 is higher home values, lower unemployment, more educated, higher work-from-home share. ZIP 92821 is wealthier, more affordable rent, lower poverty rate, more diverse.
Quick Facts
ZIP 91765
Diamond Bar city, CA
View full profile →- Population44,779
- Median Income$104,737
- Median Home Value$879k
- Median Rent$2,267
- Median Age45.7 yrs
- Poverty Rate10.2%
ZIP 92821
Brea city, CA
View full profile →- Population42,196
- Median Income$116,660
- Median Home Value$852k
- Median Rent$2,110
- Median Age39.7 yrs
- Poverty Rate6.2%
Visual comparison (same scale)
Population
44,77942,196
Median Income
$104,737$116,660
Median Home Value
$879k$852k
Median Rent
$2,267$2,110
Median Age
45.7 yrs39.7 yrs
Poverty Rate
10.2%6.2%
Demographics
ZIP 91765
Diamond Bar city, CA
View full profile →- White %17.9%
- Black %3.5%
- Asian %60.7%
- Hispanic %17.1%
- Age 0–17 %18.9%
- Age 18–64 %60.3%
- Age 65+ %20.8%
- Bachelor's+ %53.4%
- Diversity Index57/100
ZIP 92821
Brea city, CA
View full profile →- White %49.0%
- Black %1.4%
- Asian %24.4%
- Hispanic %32.0%
- Age 0–17 %22.6%
- Age 18–64 %60.3%
- Age 65+ %17.1%
- Bachelor's+ %48.7%
- Diversity Index60/100
Visual comparison (same scale)
White %
17.9%49.0%
Black %
3.5%1.4%
Asian %
60.7%24.4%
Hispanic %
17.1%32.0%
Age 0–17 %
18.9%22.6%
Age 18–64 %
60.3%60.3%
Age 65+ %
20.8%17.1%
Bachelor's+ %
53.4%48.7%
Diversity Index
57/10060/100
Economy
ZIP 91765
Diamond Bar city, CA
View full profile →- Median Income$104,737
- Unemployment %5.3%
- IRS Net Migration+2,204
- Work From Home %15.6%
ZIP 92821
Brea city, CA
View full profile →- Median Income$116,660
- Unemployment %5.6%
- IRS Net Migration+2,077
- Work From Home %12.2%
Visual comparison (same scale)
Median Income
$104,737$116,660
Unemployment %
5.3%5.6%
IRS Net Migration
+2,204+2,077
Work From Home %
15.6%12.2%
Housing
ZIP 91765
Diamond Bar city, CA
View full profile →- Median Home Value$879k
- Median Rent$2,267
- Owner Occupied %77.2%
- Broadband %94.7%
- Vacant %4.0%
- Median Year Built1979
ZIP 92821
Brea city, CA
View full profile →- Median Home Value$852k
- Median Rent$2,110
- Owner Occupied %58.0%
- Broadband %95.2%
- Vacant %2.9%
- Median Year Built1976
Visual comparison (same scale)
Median Home Value
$879k$852k
Median Rent
$2,267$2,110
Owner Occupied %
77.2%58.0%
Broadband %
94.7%95.2%
Vacant %
4.0%2.9%
Median Year Built
19791976
Climate & Location
ZIP 91765
Diamond Bar city, CA
View full profile →- Snow Days/Year0 days
- Elevation (ft)999 ft
- Nearest Airport13.5 miles (21.7 km)
- Distance to Coast21.4 miles (34.4 km)
ZIP 92821
Brea city, CA
View full profile →- Snow Days/Year0 days
- Elevation (ft)235 ft
- Nearest Airport16.9 miles (27.2 km)
- Distance to Coast16.0 miles (25.8 km)
Visual comparison (same scale)
Snow Days/Year
0 days0 days
Elevation (ft)
999 ft235 ft
Nearest Airport
13.5 miles (21.7 km)16.9 miles (27.2 km)
Distance to Coast
21.4 miles (34.4 km)16.0 miles (25.8 km)
Infrastructure
ZIP 91765
Diamond Bar city, CA
View full profile →- Work From Home %15.6%
- Walkability (0–100)58
- Broadband %94.7%
Visual comparison (same scale)
Work From Home %
15.6%12.2%
Walkability (0–100)
5869
Broadband %
94.7%95.2%
Frequently Asked Questions
How do ZIP 91765 and 92821 compare?
ZIP 91765 is higher home values, lower unemployment, more educated, higher work-from-home share. ZIP 92821 is wealthier, more affordable rent, lower poverty rate, more diverse.
What do the blue and orange colors mean?
Blue represents the first ZIP (91765), orange the second (92821). The same colors are used in the map markers and comparison bars.
Where does this data come from?
Data is from the U.S. Census Bureau and other federal sources. See our Methodology page for details.
How can I compare other ZIP codes?
From any ZIP page, use the "Compare with Another ZIP" tool, or go to /compare/XXXXX-vs-YYYYY (replace with two 5-digit ZIP codes).
Continue exploring