20878 vs 20854 — Compare ZIP Codes
Side-by-side comparison. Blue = ZIP 20878, Orange = ZIP 20854.
Quick verdict: ZIP 20878 is more affordable rent, more diverse. ZIP 20854 is wealthier, higher home values, lower poverty rate, lower unemployment, more educated, higher work-from-home share.
Quick Facts
ZIP 20878
Gaithersburg city, MD
View full profile →- Population65,236
- Median Income$142,062
- Median Home Value$675k
- Median Rent$1,934
- Median Age41.4 yrs
- Poverty Rate5.0%
ZIP 20854
Potomac CDP, MD
View full profile →- Population49,694
- Median Income$250,001
- Median Home Value$1105k
- Median Rent$2,789
- Median Age47.6 yrs
- Poverty Rate2.5%
Visual comparison (same scale)
Population
65,23649,694
Median Income
$142,062$250,001
Median Home Value
$675k$1105k
Median Rent
$1,934$2,789
Median Age
41.4 yrs47.6 yrs
Poverty Rate
5.0%2.5%
Demographics
ZIP 20878
Gaithersburg city, MD
View full profile →- White %47.6%
- Black %10.5%
- Asian %26.5%
- Hispanic %13.8%
- Age 0–17 %21.8%
- Age 18–64 %63.2%
- Age 65+ %15.0%
- Bachelor's+ %70.1%
- Diversity Index67/100
ZIP 20854
Potomac CDP, MD
View full profile →- White %62.2%
- Black %4.8%
- Asian %22.1%
- Hispanic %8.7%
- Age 0–17 %24.6%
- Age 18–64 %52.9%
- Age 65+ %22.5%
- Bachelor's+ %85.7%
- Diversity Index55/100
Visual comparison (same scale)
White %
47.6%62.2%
Black %
10.5%4.8%
Asian %
26.5%22.1%
Hispanic %
13.8%8.7%
Age 0–17 %
21.8%24.6%
Age 18–64 %
63.2%52.9%
Age 65+ %
15.0%22.5%
Bachelor's+ %
70.1%85.7%
Diversity Index
67/10055/100
Economy
ZIP 20878
Gaithersburg city, MD
View full profile →- Median Income$142,062
- Unemployment %4.2%
- IRS Net Migration+3,833
- Work From Home %30.4%
ZIP 20854
Potomac CDP, MD
View full profile →- Median Income$250,001
- Unemployment %3.0%
- IRS Net Migration+2,920
- Work From Home %32.5%
Visual comparison (same scale)
Median Income
$142,062$250,001
Unemployment %
4.2%3.0%
IRS Net Migration
+3,833+2,920
Work From Home %
30.4%32.5%
Housing
ZIP 20878
Gaithersburg city, MD
View full profile →- Median Home Value$675k
- Median Rent$1,934
- Owner Occupied %69.3%
- Broadband %98.1%
- Vacant %3.8%
- Median Year Built1987
ZIP 20854
Potomac CDP, MD
View full profile →- Median Home Value$1105k
- Median Rent$2,789
- Owner Occupied %89.9%
- Broadband %98.4%
- Vacant %3.4%
- Median Year Built1979
Visual comparison (same scale)
Median Home Value
$675k$1105k
Median Rent
$1,934$2,789
Owner Occupied %
69.3%89.9%
Broadband %
98.1%98.4%
Vacant %
3.8%3.4%
Median Year Built
19871979
Climate & Location
ZIP 20878
Gaithersburg city, MD
View full profile →- Snow Days/Year0 days
- Elevation (ft)440 ft
- Nearest Airport16.0 miles (25.8 km)
- Distance to Coast15.7 miles (25.2 km)
ZIP 20854
Potomac CDP, MD
View full profile →- Snow Days/Year0 days
- Elevation (ft)440 ft
- Nearest Airport14.0 miles (22.6 km)
- Distance to Coast10.2 miles (16.4 km)
Visual comparison (same scale)
Snow Days/Year
0 days0 days
Elevation (ft)
440 ft440 ft
Nearest Airport
16.0 miles (25.8 km)14.0 miles (22.6 km)
Distance to Coast
15.7 miles (25.2 km)10.2 miles (16.4 km)
Infrastructure
ZIP 20878
Gaithersburg city, MD
View full profile →- Work From Home %30.4%
- Walkability (0–100)62
- Broadband %98.1%
ZIP 20854
Potomac CDP, MD
View full profile →- Work From Home %32.5%
- Walkability (0–100)52
- Broadband %98.4%
Visual comparison (same scale)
Work From Home %
30.4%32.5%
Walkability (0–100)
6252
Broadband %
98.1%98.4%
Frequently Asked Questions
How do ZIP 20878 and 20854 compare?
ZIP 20878 is more affordable rent, more diverse. ZIP 20854 is wealthier, higher home values, lower poverty rate, lower unemployment, more educated, higher work-from-home share.
What do the blue and orange colors mean?
Blue represents the first ZIP (20878), orange the second (20854). 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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