21790 vs 21770 — Compare ZIP Codes
Side-by-side comparison. Blue = ZIP 21790, Orange = ZIP 21770.
Quick verdict: ZIP 21790 is lower poverty rate, lower unemployment. ZIP 21770 is wealthier, more diverse, more educated, higher work-from-home share.
Quick Facts
ZIP 21790
Point of Rocks CDP, MD
View full profile →- Population38
- Median Income$0
- Median Home Value—
- Median Age2.9 yrs
- Poverty Rate0.0%
ZIP 21770
Green Valley CDP, MD
View full profile →- Population7,815
- Median Income$184,464
- Median Home Value$600k
- Median Age41.2 yrs
- Poverty Rate1.4%
Visual comparison (same scale)
Population
387,815
Median Income
$0$184,464
Median Home Value
—$600k
Median Age
2.9 yrs41.2 yrs
Poverty Rate
0.0%1.4%
Demographics
ZIP 21790
Point of Rocks CDP, MD
View full profile →- White %100.0%
- Black %0.0%
- Asian %0.0%
- Hispanic %0.0%
- Age 0–17 %52.6%
- Age 18–64 %47.4%
- Age 65+ %0.0%
- Bachelor's+ %0.0%
- Diversity Index0/100
ZIP 21770
Green Valley CDP, MD
View full profile →- White %76.3%
- Black %5.0%
- Asian %12.0%
- Hispanic %3.9%
- Age 0–17 %21.8%
- Age 18–64 %59.2%
- Age 65+ %18.9%
- Bachelor's+ %54.5%
- Diversity Index40/100
Visual comparison (same scale)
White %
100.0%76.3%
Black %
0.0%5.0%
Asian %
0.0%12.0%
Hispanic %
0.0%3.9%
Age 0–17 %
52.6%21.8%
Age 18–64 %
47.4%59.2%
Age 65+ %
0.0%18.9%
Bachelor's+ %
0.0%54.5%
Diversity Index
0/10040/100
Economy
ZIP 21790
Point of Rocks CDP, MD
View full profile →- Median Income$0
- Unemployment %0.0%
- IRS Net Migration+2
- Work From Home %0.0%
- Mean Commute (min)10 min
ZIP 21770
Green Valley CDP, MD
View full profile →- Median Income$184,464
- Unemployment %2.2%
- IRS Net Migration+459
- Work From Home %25.7%
- Mean Commute (min)—
Visual comparison (same scale)
Median Income
$0$184,464
Unemployment %
0.0%2.2%
IRS Net Migration
+2+459
Work From Home %
0.0%25.7%
Mean Commute (min)
10 min—
Housing
ZIP 21790
Point of Rocks CDP, MD
View full profile →- Median Home Value—
- Owner Occupied %0.0%
- Broadband %100.0%
- Vacant %0.0%
- Median Year Built1800
ZIP 21770
Green Valley CDP, MD
View full profile →- Median Home Value$600k
- Owner Occupied %98.0%
- Broadband %96.4%
- Vacant %2.2%
- Median Year Built1988
Visual comparison (same scale)
Median Home Value
—$600k
Owner Occupied %
0.0%98.0%
Broadband %
100.0%96.4%
Vacant %
0.0%2.2%
Median Year Built
18001988
Climate & Location
ZIP 21790
Point of Rocks CDP, MD
View full profile →- Snow Days/Year0 days
- Elevation (ft)380 ft
- Nearest Airport21.9 miles (35.3 km)
- Distance to Coast31.3 miles (50.4 km)
ZIP 21770
Green Valley CDP, MD
View full profile →- Snow Days/Year0 days
- Elevation (ft)700 ft
- Nearest Airport30.0 miles (48.3 km)
- Distance to Coast31.0 miles (50.0 km)
Visual comparison (same scale)
Snow Days/Year
0 days0 days
Elevation (ft)
380 ft700 ft
Nearest Airport
21.9 miles (35.3 km)30.0 miles (48.3 km)
Distance to Coast
31.3 miles (50.4 km)31.0 miles (50.0 km)
Infrastructure
ZIP 21790
Point of Rocks CDP, MD
View full profile →- Mean Commute (min)10 min
- Work From Home %0.0%
- Walkability (0–100)26
- Broadband %100.0%
ZIP 21770
Green Valley CDP, MD
View full profile →- Mean Commute (min)—
- Work From Home %25.7%
- Walkability (0–100)28
- Broadband %96.4%
Visual comparison (same scale)
Mean Commute (min)
10 min—
Work From Home %
0.0%25.7%
Walkability (0–100)
2628
Broadband %
100.0%96.4%
Frequently Asked Questions
How do ZIP 21790 and 21770 compare?
ZIP 21790 is lower poverty rate, lower unemployment. ZIP 21770 is wealthier, more diverse, more educated, higher work-from-home share.
What do the blue and orange colors mean?
Blue represents the first ZIP (21790), orange the second (21770). 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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