15857 vs 15821 — Compare ZIP Codes
Side-by-side comparison. Blue = ZIP 15857, Orange = ZIP 15821.
Quick verdict: ZIP 15857 is wealthier, lower unemployment, more diverse, more educated. ZIP 15821 is higher home values, lower poverty rate, higher work-from-home share.
Quick Facts
ZIP 15857
St. Marys city, PA
View full profile →- Population12,825
- Median Income$64,894
- Median Home Value$145k
- Median Rent$619
- Median Age49.8 yrs
- Poverty Rate8.3%
ZIP 15821
PA
View full profile →- Population64
- Median Income$48,750
- Median Home Value$153k
- Median Rent—
- Median Age58.1 yrs
- Poverty Rate0.0%
Visual comparison (same scale)
Population
12,82564
Median Income
$64,894$48,750
Median Home Value
$145k$153k
Median Rent
$619—
Median Age
49.8 yrs58.1 yrs
Poverty Rate
8.3%0.0%
Demographics
ZIP 15857
St. Marys city, PA
View full profile →- White %94.2%
- Black %1.7%
- Asian %0.3%
- Hispanic %1.6%
- Age 0–17 %18.1%
- Age 18–64 %56.4%
- Age 65+ %25.6%
- Bachelor's+ %20.6%
- Diversity Index11/100
ZIP 15821
PA
View full profile →- White %96.9%
- Black %0.0%
- Asian %0.0%
- Hispanic %0.0%
- Age 0–17 %0.0%
- Age 18–64 %68.8%
- Age 65+ %31.3%
- Bachelor's+ %17.2%
- Diversity Index6/100
Visual comparison (same scale)
White %
94.2%96.9%
Black %
1.7%0.0%
Asian %
0.3%0.0%
Hispanic %
1.6%0.0%
Age 0–17 %
18.1%0.0%
Age 18–64 %
56.4%68.8%
Age 65+ %
25.6%31.3%
Bachelor's+ %
20.6%17.2%
Diversity Index
11/1006/100
Economy
ZIP 15857
St. Marys city, PA
View full profile →- Median Income$64,894
- Unemployment %8.4%
- IRS Net Migration+584
- Work From Home %1.2%
- Mean Commute (min)—
ZIP 15821
PA
View full profile →- Median Income$48,750
- Unemployment %14.7%
- IRS Net Migration+3
- Work From Home %6.9%
- Mean Commute (min)27 min
Visual comparison (same scale)
Median Income
$64,894$48,750
Unemployment %
8.4%14.7%
IRS Net Migration
+584+3
Work From Home %
1.2%6.9%
Mean Commute (min)
—27 min
Housing
ZIP 15857
St. Marys city, PA
View full profile →- Median Home Value$145k
- Median Rent$619
- Owner Occupied %76.0%
- Broadband %84.1%
- Vacant %8.3%
- Median Year Built1963
ZIP 15821
PA
View full profile →- Median Home Value$153k
- Median Rent—
- Owner Occupied %84.1%
- Broadband %84.1%
- Vacant %88.4%
- Median Year Built1969
Visual comparison (same scale)
Median Home Value
$145k$153k
Median Rent
$619—
Owner Occupied %
76.0%84.1%
Broadband %
84.1%84.1%
Vacant %
8.3%88.4%
Median Year Built
19631969
Climate & Location
ZIP 15857
St. Marys city, PA
View full profile →- Snow Days/Year0 days
- Elevation (ft)1,720 ft
- Nearest Airport24.8 miles (40.0 km)
- Distance to Coast81.2 miles (130.7 km)
ZIP 15821
PA
View full profile →- Snow Days/Year0 days
- Elevation (ft)1,040 ft
- Nearest Airport30.0 miles (48.3 km)
- Distance to Coast90.8 miles (146.2 km)
Visual comparison (same scale)
Snow Days/Year
0 days0 days
Elevation (ft)
1,720 ft1,040 ft
Nearest Airport
24.8 miles (40.0 km)30.0 miles (48.3 km)
Distance to Coast
81.2 miles (130.7 km)90.8 miles (146.2 km)
Infrastructure
ZIP 15857
St. Marys city, PA
View full profile →- Mean Commute (min)—
- Work From Home %1.2%
- Walkability (0–100)32
- Broadband %84.1%
ZIP 15821
PA
View full profile →- Mean Commute (min)27 min
- Work From Home %6.9%
- Walkability (0–100)26
- Broadband %84.1%
Visual comparison (same scale)
Mean Commute (min)
—27 min
Work From Home %
1.2%6.9%
Walkability (0–100)
3226
Broadband %
84.1%84.1%
Frequently Asked Questions
How do ZIP 15857 and 15821 compare?
ZIP 15857 is wealthier, lower unemployment, more diverse, more educated. ZIP 15821 is higher home values, lower poverty rate, higher work-from-home share.
What do the blue and orange colors mean?
Blue represents the first ZIP (15857), orange the second (15821). 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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