21782 vs 21781 — Compare ZIP Codes
Side-by-side comparison. Blue = ZIP 21782, Orange = ZIP 21781.
Quick verdict: ZIP 21782 is wealthier, lower poverty rate, lower unemployment, more educated, higher work-from-home share. ZIP 21781 is more diverse.
Quick Facts
ZIP 21782
Mercersville CDP, MD
View full profile →- Population4,056
- Median Income$89,375
- Median Home Value$296k
- Median Rent$857
- Median Age48.1 yrs
- Poverty Rate2.7%
ZIP 21781
St. James CDP, MD
View full profile →- Population34
- Median Income$0
- Median Home Value—
- Median Rent—
- Median Age18.8 yrs
- Poverty Rate100.0%
Visual comparison (same scale)
Population
4,05634
Median Income
$89,375$0
Median Home Value
$296k—
Median Rent
$857—
Median Age
48.1 yrs18.8 yrs
Poverty Rate
2.7%100.0%
Demographics
ZIP 21782
Mercersville CDP, MD
View full profile →- White %97.3%
- Black %0.0%
- Asian %0.4%
- Hispanic %0.5%
- Age 0–17 %16.9%
- Age 18–64 %62.0%
- Age 65+ %21.1%
- Bachelor's+ %25.1%
- Diversity Index5/100
ZIP 21781
St. James CDP, MD
View full profile →- White %82.3%
- Black %5.9%
- Asian %8.8%
- Hispanic %5.9%
- Age 0–17 %35.3%
- Age 18–64 %64.7%
- Age 65+ %0.0%
- Bachelor's+ %0.0%
- Diversity Index31/100
Visual comparison (same scale)
White %
97.3%82.3%
Black %
0.0%5.9%
Asian %
0.4%8.8%
Hispanic %
0.5%5.9%
Age 0–17 %
16.9%35.3%
Age 18–64 %
62.0%64.7%
Age 65+ %
21.1%0.0%
Bachelor's+ %
25.1%0.0%
Diversity Index
5/10031/100
Economy
ZIP 21782
Mercersville CDP, MD
View full profile →- Median Income$89,375
- Unemployment %8.1%
- IRS Net Migration+238
- Work From Home %14.3%
- Mean Commute (min)—
ZIP 21781
St. James CDP, MD
View full profile →- Median Income$0
- Unemployment %81.3%
- IRS Net Migration+2
- Work From Home %0.0%
- Mean Commute (min)3 min
Visual comparison (same scale)
Median Income
$89,375$0
Unemployment %
8.1%81.3%
IRS Net Migration
+238+2
Work From Home %
14.3%0.0%
Mean Commute (min)
—3 min
Housing
ZIP 21782
Mercersville CDP, MD
View full profile →- Median Home Value$296k
- Median Rent$857
- Owner Occupied %80.8%
- Broadband %84.7%
- Vacant %4.2%
- Median Year Built1978
ZIP 21781
St. James CDP, MD
View full profile →- Median Home Value—
- Median Rent—
- Owner Occupied %—
- Broadband %—
- Vacant %—
- Median Year Built1800
Visual comparison (same scale)
Median Home Value
$296k—
Median Rent
$857—
Owner Occupied %
80.8%—
Broadband %
84.7%—
Vacant %
4.2%—
Median Year Built
19781800
Climate & Location
ZIP 21782
Mercersville CDP, MD
View full profile →- Snow Days/Year0 days
- Elevation (ft)400 ft
- Nearest Airport12.4 miles (20.0 km)
- Distance to Coast51.3 miles (82.6 km)
ZIP 21781
St. James CDP, MD
View full profile →- Snow Days/Year0 days
- Elevation (ft)532 ft
- Nearest Airport9.7 miles (15.5 km)
- Distance to Coast57.2 miles (92.1 km)
Visual comparison (same scale)
Snow Days/Year
0 days0 days
Elevation (ft)
400 ft532 ft
Nearest Airport
12.4 miles (20.0 km)9.7 miles (15.5 km)
Distance to Coast
51.3 miles (82.6 km)57.2 miles (92.1 km)
Infrastructure
ZIP 21782
Mercersville CDP, MD
View full profile →- Mean Commute (min)—
- Work From Home %14.3%
- Walkability (0–100)23
- Broadband %84.7%
ZIP 21781
St. James CDP, MD
View full profile →- Mean Commute (min)3 min
- Work From Home %0.0%
- Walkability (0–100)—
- Broadband %—
Visual comparison (same scale)
Mean Commute (min)
—3 min
Work From Home %
14.3%0.0%
Walkability (0–100)
23—
Broadband %
84.7%—
Frequently Asked Questions
How do ZIP 21782 and 21781 compare?
ZIP 21782 is wealthier, lower poverty rate, lower unemployment, more educated, higher work-from-home share. ZIP 21781 is more diverse.
What do the blue and orange colors mean?
Blue represents the first ZIP (21782), orange the second (21781). 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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