94546 vs 94587 — Compare ZIP Codes
Side-by-side comparison. Blue = ZIP 94546, Orange = ZIP 94587.
Quick verdict: ZIP 94546 is more affordable rent, lower unemployment, more diverse, higher work-from-home share. ZIP 94587 is wealthier, higher home values, lower poverty rate, more educated.
Quick Facts
ZIP 94546
Castro Valley CDP, CA
View full profile →- Population45,848
- Median Income$125,780
- Median Home Value$976k
- Median Rent$2,317
- Median Age42.1 yrs
- Poverty Rate7.4%
ZIP 94587
Union City city, CA
View full profile →- Population68,141
- Median Income$137,194
- Median Home Value$1058k
- Median Rent$2,508
- Median Age42.1 yrs
- Poverty Rate7.0%
Visual comparison (same scale)
Population
45,84868,141
Median Income
$125,780$137,194
Median Home Value
$976k$1058k
Median Rent
$2,317$2,508
Median Age
42.1 yrs42.1 yrs
Poverty Rate
7.4%7.0%
Demographics
ZIP 94546
Castro Valley CDP, CA
View full profile →- White %40.1%
- Black %8.2%
- Asian %31.6%
- Hispanic %20.3%
- Age 0–17 %21.1%
- Age 18–64 %60.7%
- Age 65+ %18.2%
- Bachelor's+ %41.4%
- Diversity Index69/100
ZIP 94587
Union City city, CA
View full profile →- White %17.9%
- Black %5.3%
- Asian %55.9%
- Hispanic %19.3%
- Age 0–17 %18.2%
- Age 18–64 %63.7%
- Age 65+ %18.1%
- Bachelor's+ %45.3%
- Diversity Index62/100
Visual comparison (same scale)
White %
40.1%17.9%
Black %
8.2%5.3%
Asian %
31.6%55.9%
Hispanic %
20.3%19.3%
Age 0–17 %
21.1%18.2%
Age 18–64 %
60.7%63.7%
Age 65+ %
18.2%18.1%
Bachelor's+ %
41.4%45.3%
Diversity Index
69/10062/100
Economy
ZIP 94546
Castro Valley CDP, CA
View full profile →- Median Income$125,780
- Unemployment %3.7%
- IRS Net Migration+2,256
- Work From Home %18.9%
ZIP 94587
Union City city, CA
View full profile →- Median Income$137,194
- Unemployment %5.0%
- IRS Net Migration+3,353
- Work From Home %17.7%
Visual comparison (same scale)
Median Income
$125,780$137,194
Unemployment %
3.7%5.0%
IRS Net Migration
+2,256+3,353
Work From Home %
18.9%17.7%
Housing
ZIP 94546
Castro Valley CDP, CA
View full profile →- Median Home Value$976k
- Median Rent$2,317
- Owner Occupied %65.8%
- Broadband %95.5%
- Vacant %2.9%
- Median Year Built1960
ZIP 94587
Union City city, CA
View full profile →- Median Home Value$1058k
- Median Rent$2,508
- Owner Occupied %67.0%
- Broadband %94.9%
- Vacant %3.3%
- Median Year Built1979
Visual comparison (same scale)
Median Home Value
$976k$1058k
Median Rent
$2,317$2,508
Owner Occupied %
65.8%67.0%
Broadband %
95.5%94.9%
Vacant %
2.9%3.3%
Median Year Built
19601979
Climate & Location
ZIP 94546
Castro Valley CDP, CA
View full profile →- Snow Days/Year0 days
- Elevation (ft)43 ft
- Nearest Airport7.6 miles (12.2 km)
- Distance to Coast5.8 miles (9.3 km)
ZIP 94587
Union City city, CA
View full profile →- Snow Days/Year0 days
- Elevation (ft)38 ft
- Nearest Airport11.1 miles (17.9 km)
- Distance to Coast4.8 miles (7.7 km)
Visual comparison (same scale)
Snow Days/Year
0 days0 days
Elevation (ft)
43 ft38 ft
Nearest Airport
7.6 miles (12.2 km)11.1 miles (17.9 km)
Distance to Coast
5.8 miles (9.3 km)4.8 miles (7.7 km)
Infrastructure
ZIP 94546
Castro Valley CDP, CA
View full profile →- Work From Home %18.9%
- Walkability (0–100)68
- Broadband %95.5%
ZIP 94587
Union City city, CA
View full profile →- Work From Home %17.7%
- Walkability (0–100)66
- Broadband %94.9%
Visual comparison (same scale)
Work From Home %
18.9%17.7%
Walkability (0–100)
6866
Broadband %
95.5%94.9%
Frequently Asked Questions
How do ZIP 94546 and 94587 compare?
ZIP 94546 is more affordable rent, lower unemployment, more diverse, higher work-from-home share. ZIP 94587 is wealthier, higher home values, lower poverty rate, more educated.
What do the blue and orange colors mean?
Blue represents the first ZIP (94546), orange the second (94587). 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).
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