91384 vs 91321 — Compare ZIP Codes
Side-by-side comparison. Blue = ZIP 91384, Orange = ZIP 91321.
Quick verdict: ZIP 91384 is wealthier, higher home values, more affordable rent, lower poverty rate, more diverse, more educated. ZIP 91321 is lower unemployment, higher work-from-home share.
Quick Facts
ZIP 91384
Castaic CDP, CA
View full profile →- Population27,278
- Median Income$129,603
- Median Home Value$694k
- Median Rent$1,632
- Median Age35.1 yrs
- Poverty Rate4.5%
ZIP 91321
Santa Clarita city, CA
View full profile →- Population32,668
- Median Income$93,281
- Median Home Value$654k
- Median Rent$1,959
- Median Age34.7 yrs
- Poverty Rate9.6%
Visual comparison (same scale)
Population
27,27832,668
Median Income
$129,603$93,281
Median Home Value
$694k$654k
Median Rent
$1,632$1,959
Median Age
35.1 yrs34.7 yrs
Poverty Rate
4.5%9.6%
Demographics
ZIP 91384
Castaic CDP, CA
View full profile →- White %49.5%
- Black %5.0%
- Asian %9.0%
- Hispanic %42.8%
- Age 0–17 %22.6%
- Age 18–64 %67.6%
- Age 65+ %9.8%
- Bachelor's+ %31.7%
- Diversity Index56/100
ZIP 91321
Santa Clarita city, CA
View full profile →- White %44.9%
- Black %2.4%
- Asian %7.5%
- Hispanic %53.7%
- Age 0–17 %24.9%
- Age 18–64 %60.1%
- Age 65+ %15.1%
- Bachelor's+ %31.3%
- Diversity Index50/100
Visual comparison (same scale)
White %
49.5%44.9%
Black %
5.0%2.4%
Asian %
9.0%7.5%
Hispanic %
42.8%53.7%
Age 0–17 %
22.6%24.9%
Age 18–64 %
67.6%60.1%
Age 65+ %
9.8%15.1%
Bachelor's+ %
31.7%31.3%
Diversity Index
56/10050/100
Economy
ZIP 91384
Castaic CDP, CA
View full profile →- Median Income$129,603
- Unemployment %5.8%
- IRS Net Migration+1,342
- Work From Home %11.7%
ZIP 91321
Santa Clarita city, CA
View full profile →- Median Income$93,281
- Unemployment %4.8%
- IRS Net Migration+1,608
- Work From Home %12.9%
Visual comparison (same scale)
Median Income
$129,603$93,281
Unemployment %
5.8%4.8%
IRS Net Migration
+1,342+1,608
Work From Home %
11.7%12.9%
Housing
ZIP 91384
Castaic CDP, CA
View full profile →- Median Home Value$694k
- Median Rent$1,632
- Owner Occupied %84.3%
- Broadband %96.9%
- Vacant %1.6%
- Median Year Built1990
ZIP 91321
Santa Clarita city, CA
View full profile →- Median Home Value$654k
- Median Rent$1,959
- Owner Occupied %61.4%
- Broadband %93.2%
- Vacant %4.4%
- Median Year Built1978
Visual comparison (same scale)
Median Home Value
$694k$654k
Median Rent
$1,632$1,959
Owner Occupied %
84.3%61.4%
Broadband %
96.9%93.2%
Vacant %
1.6%4.4%
Median Year Built
19901978
Climate & Location
ZIP 91384
Castaic CDP, CA
View full profile →- Snow Days/Year0 days
- Elevation (ft)1,765 ft
- Nearest Airport23.7 miles (38.2 km)
- Distance to Coast32.8 miles (52.7 km)
ZIP 91321
Santa Clarita city, CA
View full profile →- Snow Days/Year0 days
- Elevation (ft)1,765 ft
- Nearest Airport10.9 miles (17.6 km)
- Distance to Coast23.6 miles (38.0 km)
Visual comparison (same scale)
Snow Days/Year
0 days0 days
Elevation (ft)
1,765 ft1,765 ft
Nearest Airport
23.7 miles (38.2 km)10.9 miles (17.6 km)
Distance to Coast
32.8 miles (52.7 km)23.6 miles (38.0 km)
Infrastructure
ZIP 91384
Castaic CDP, CA
View full profile →- Work From Home %11.7%
- Walkability (0–100)34
- Broadband %96.9%
ZIP 91321
Santa Clarita city, CA
View full profile →- Work From Home %12.9%
- Walkability (0–100)40
- Broadband %93.2%
Visual comparison (same scale)
Work From Home %
11.7%12.9%
Walkability (0–100)
3440
Broadband %
96.9%93.2%
Frequently Asked Questions
How do ZIP 91384 and 91321 compare?
ZIP 91384 is wealthier, higher home values, more affordable rent, lower poverty rate, more diverse, more educated. ZIP 91321 is lower unemployment, higher work-from-home share.
What do the blue and orange colors mean?
Blue represents the first ZIP (91384), orange the second (91321). 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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