91978 vs 92021 — Compare ZIP Codes
Side-by-side comparison. Blue = ZIP 91978, Orange = ZIP 92021.
Quick verdict: ZIP 91978 is wealthier, higher home values, lower poverty rate, lower unemployment, more diverse, more educated, higher work-from-home share. ZIP 92021 is more affordable rent.
Quick Facts
ZIP 91978
Spring Valley CDP, CA
View full profile →- Population10,511
- Median Income$111,506
- Median Home Value$597k
- Median Rent$2,089
- Median Age38.4 yrs
- Poverty Rate13.4%
ZIP 92021
Harbison Canyon CDP, CA
View full profile →- Population69,306
- Median Income$69,979
- Median Home Value$572k
- Median Rent$1,684
- Median Age36.0 yrs
- Poverty Rate18.2%
Visual comparison (same scale)
Population
10,51169,306
Median Income
$111,506$69,979
Median Home Value
$597k$572k
Median Rent
$2,089$1,684
Median Age
38.4 yrs36.0 yrs
Poverty Rate
13.4%18.2%
Demographics
ZIP 91978
Spring Valley CDP, CA
View full profile →- White %45.0%
- Black %11.5%
- Asian %6.1%
- Hispanic %36.7%
- Age 0–17 %23.6%
- Age 18–64 %62.3%
- Age 65+ %14.1%
- Bachelor's+ %30.6%
- Diversity Index65/100
ZIP 92021
Harbison Canyon CDP, CA
View full profile →- White %60.7%
- Black %6.4%
- Asian %5.3%
- Hispanic %28.2%
- Age 0–17 %25.2%
- Age 18–64 %59.4%
- Age 65+ %15.4%
- Bachelor's+ %22.1%
- Diversity Index54/100
Visual comparison (same scale)
White %
45.0%60.7%
Black %
11.5%6.4%
Asian %
6.1%5.3%
Hispanic %
36.7%28.2%
Age 0–17 %
23.6%25.2%
Age 18–64 %
62.3%59.4%
Age 65+ %
14.1%15.4%
Bachelor's+ %
30.6%22.1%
Diversity Index
65/10054/100
Economy
ZIP 91978
Spring Valley CDP, CA
View full profile →- Median Income$111,506
- Unemployment %6.9%
- IRS Net Migration+517
- Work From Home %12.1%
ZIP 92021
Harbison Canyon CDP, CA
View full profile →- Median Income$69,979
- Unemployment %8.0%
- IRS Net Migration+3,411
- Work From Home %9.3%
Visual comparison (same scale)
Median Income
$111,506$69,979
Unemployment %
6.9%8.0%
IRS Net Migration
+517+3,411
Work From Home %
12.1%9.3%
Housing
ZIP 91978
Spring Valley CDP, CA
View full profile →- Median Home Value$597k
- Median Rent$2,089
- Owner Occupied %65.8%
- Broadband %94.3%
- Vacant %2.2%
- Median Year Built1979
ZIP 92021
Harbison Canyon CDP, CA
View full profile →- Median Home Value$572k
- Median Rent$1,684
- Owner Occupied %52.8%
- Broadband %92.5%
- Vacant %3.4%
- Median Year Built1977
Visual comparison (same scale)
Median Home Value
$597k$572k
Median Rent
$2,089$1,684
Owner Occupied %
65.8%52.8%
Broadband %
94.3%92.5%
Vacant %
2.2%3.4%
Median Year Built
19791977
Climate & Location
ZIP 91978
Spring Valley CDP, CA
View full profile →- Snow Days/Year0 days
- Elevation (ft)495 ft
- Nearest Airport10.7 miles (17.3 km)
- Distance to Coast11.6 miles (18.6 km)
ZIP 92021
Harbison Canyon CDP, CA
View full profile →- Snow Days/Year0 days
- Elevation (ft)495 ft
- Nearest Airport16.0 miles (25.7 km)
- Distance to Coast19.3 miles (31.1 km)
Visual comparison (same scale)
Snow Days/Year
0 days0 days
Elevation (ft)
495 ft495 ft
Nearest Airport
10.7 miles (17.3 km)16.0 miles (25.7 km)
Distance to Coast
11.6 miles (18.6 km)19.3 miles (31.1 km)
Infrastructure
ZIP 91978
Spring Valley CDP, CA
View full profile →- Work From Home %12.1%
- Walkability (0–100)60
- Broadband %94.3%
ZIP 92021
Harbison Canyon CDP, CA
View full profile →- Work From Home %9.3%
- Walkability (0–100)62
- Broadband %92.5%
Visual comparison (same scale)
Work From Home %
12.1%9.3%
Walkability (0–100)
6062
Broadband %
94.3%92.5%
Frequently Asked Questions
How do ZIP 91978 and 92021 compare?
ZIP 91978 is wealthier, higher home values, lower poverty rate, lower unemployment, more diverse, more educated, higher work-from-home share. ZIP 92021 is more affordable rent.
What do the blue and orange colors mean?
Blue represents the first ZIP (91978), orange the second (92021). 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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