20842 vs 21777 — Compare ZIP Codes
Side-by-side comparison. Blue = ZIP 20842, Orange = ZIP 21777.
Quick verdict: ZIP 20842 is wealthier, higher home values, lower poverty rate, lower unemployment, more diverse, more educated, higher work-from-home share.
Quick Facts
ZIP 20842
MD
View full profile →- Population2,093
- Median Income$166,389
- Median Home Value$709k
- Median Rent$1,325
- Median Age47.3 yrs
- Poverty Rate1.3%
ZIP 21777
Point of Rocks CDP, MD
View full profile →- Population2,333
- Median Income$136,827
- Median Home Value$441k
- Median Rent—
- Median Age43.6 yrs
- Poverty Rate1.6%
Visual comparison (same scale)
Population
2,0932,333
Median Income
$166,389$136,827
Median Home Value
$709k$441k
Median Rent
$1,325—
Median Age
47.3 yrs43.6 yrs
Poverty Rate
1.3%1.6%
Demographics
ZIP 20842
MD
View full profile →- White %67.5%
- Black %11.4%
- Asian %1.5%
- Hispanic %14.1%
- Age 0–17 %21.4%
- Age 18–64 %62.2%
- Age 65+ %16.4%
- Bachelor's+ %51.3%
- Diversity Index51/100
ZIP 21777
Point of Rocks CDP, MD
View full profile →- White %67.1%
- Black %14.0%
- Asian %5.7%
- Hispanic %15.9%
- Age 0–17 %19.3%
- Age 18–64 %69.2%
- Age 65+ %11.5%
- Bachelor's+ %41.8%
- Diversity Index50/100
Visual comparison (same scale)
White %
67.5%67.1%
Black %
11.4%14.0%
Asian %
1.5%5.7%
Hispanic %
14.1%15.9%
Age 0–17 %
21.4%19.3%
Age 18–64 %
62.2%69.2%
Age 65+ %
16.4%11.5%
Bachelor's+ %
51.3%41.8%
Diversity Index
51/10050/100
Economy
ZIP 20842
MD
View full profile →- Median Income$166,389
- Unemployment %1.6%
- IRS Net Migration+123
- Work From Home %28.0%
ZIP 21777
Point of Rocks CDP, MD
View full profile →- Median Income$136,827
- Unemployment %4.8%
- IRS Net Migration+137
- Work From Home %22.8%
Visual comparison (same scale)
Median Income
$166,389$136,827
Unemployment %
1.6%4.8%
IRS Net Migration
+123+137
Work From Home %
28.0%22.8%
Housing
ZIP 20842
MD
View full profile →- Median Home Value$709k
- Median Rent$1,325
- Owner Occupied %78.5%
- Broadband %87.1%
- Vacant %7.4%
- Median Year Built1963
ZIP 21777
Point of Rocks CDP, MD
View full profile →- Median Home Value$441k
- Median Rent—
- Owner Occupied %99.6%
- Broadband %100.0%
- Vacant %0.0%
- Median Year Built1998
Visual comparison (same scale)
Median Home Value
$709k$441k
Median Rent
$1,325—
Owner Occupied %
78.5%99.6%
Broadband %
87.1%100.0%
Vacant %
7.4%0.0%
Median Year Built
19631998
Climate & Location
ZIP 20842
MD
View full profile →- Snow Days/Year0 days
- Elevation (ft)700 ft
- Nearest Airport17.8 miles (28.6 km)
- Distance to Coast25.7 miles (41.4 km)
ZIP 21777
Point of Rocks CDP, MD
View full profile →- Snow Days/Year0 days
- Elevation (ft)380 ft
- Nearest Airport22.8 miles (36.8 km)
- Distance to Coast33.1 miles (53.3 km)
Visual comparison (same scale)
Snow Days/Year
0 days0 days
Elevation (ft)
700 ft380 ft
Nearest Airport
17.8 miles (28.6 km)22.8 miles (36.8 km)
Distance to Coast
25.7 miles (41.4 km)33.1 miles (53.3 km)
Infrastructure
ZIP 21777
Point of Rocks CDP, MD
View full profile →- Work From Home %22.8%
- Walkability (0–100)21
- Broadband %100.0%
Visual comparison (same scale)
Work From Home %
28.0%22.8%
Walkability (0–100)
3221
Broadband %
87.1%100.0%
Frequently Asked Questions
How do ZIP 20842 and 21777 compare?
ZIP 20842 is wealthier, higher home values, lower poverty rate, lower unemployment, more diverse, more educated, higher work-from-home share.
What do the blue and orange colors mean?
Blue represents the first ZIP (20842), orange the second (21777). 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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