20877 vs 20879 — Compare ZIP Codes
Side-by-side comparison. Blue = ZIP 20877, Orange = ZIP 20879.
Quick verdict: ZIP 20877 is higher home values, more affordable rent, lower unemployment, higher work-from-home share. ZIP 20879 is wealthier, lower poverty rate, more diverse, more educated.
Quick Facts
ZIP 20877
Gaithersburg city, MD
View full profile →- Population39,068
- Median Income$86,103
- Median Home Value$463k
- Median Rent$1,729
- Median Age37.2 yrs
- Poverty Rate11.3%
ZIP 20879
Flower Hill CDP, MD
View full profile →- Population26,120
- Median Income$105,109
- Median Home Value$434k
- Median Rent$1,760
- Median Age36.3 yrs
- Poverty Rate6.6%
Visual comparison (same scale)
Population
39,06826,120
Median Income
$86,103$105,109
Median Home Value
$463k$434k
Median Rent
$1,729$1,760
Median Age
37.2 yrs36.3 yrs
Poverty Rate
11.3%6.6%
Demographics
ZIP 20877
Gaithersburg city, MD
View full profile →- White %24.6%
- Black %16.1%
- Asian %14.4%
- Hispanic %47.4%
- Age 0–17 %24.5%
- Age 18–64 %60.5%
- Age 65+ %15.1%
- Bachelor's+ %35.2%
- Diversity Index67/100
ZIP 20879
Flower Hill CDP, MD
View full profile →- White %34.5%
- Black %21.2%
- Asian %13.6%
- Hispanic %32.3%
- Age 0–17 %22.7%
- Age 18–64 %63.6%
- Age 65+ %13.7%
- Bachelor's+ %41.6%
- Diversity Index71/100
Visual comparison (same scale)
White %
24.6%34.5%
Black %
16.1%21.2%
Asian %
14.4%13.6%
Hispanic %
47.4%32.3%
Age 0–17 %
24.5%22.7%
Age 18–64 %
60.5%63.6%
Age 65+ %
15.1%13.7%
Bachelor's+ %
35.2%41.6%
Diversity Index
67/10071/100
Economy
ZIP 20877
Gaithersburg city, MD
View full profile →- Median Income$86,103
- Unemployment %6.2%
- IRS Net Migration+2,295
- Work From Home %15.9%
ZIP 20879
Flower Hill CDP, MD
View full profile →- Median Income$105,109
- Unemployment %6.4%
- IRS Net Migration+1,535
- Work From Home %13.2%
Visual comparison (same scale)
Median Income
$86,103$105,109
Unemployment %
6.2%6.4%
IRS Net Migration
+2,295+1,535
Work From Home %
15.9%13.2%
Housing
ZIP 20877
Gaithersburg city, MD
View full profile →- Median Home Value$463k
- Median Rent$1,729
- Owner Occupied %43.9%
- Broadband %93.2%
- Vacant %5.3%
- Median Year Built1985
ZIP 20879
Flower Hill CDP, MD
View full profile →- Median Home Value$434k
- Median Rent$1,760
- Owner Occupied %70.8%
- Broadband %94.5%
- Vacant %1.8%
- Median Year Built1985
Visual comparison (same scale)
Median Home Value
$463k$434k
Median Rent
$1,729$1,760
Owner Occupied %
43.9%70.8%
Broadband %
93.2%94.5%
Vacant %
5.3%1.8%
Median Year Built
19851985
Climate & Location
ZIP 20877
Gaithersburg city, MD
View full profile →- Snow Days/Year0 days
- Elevation (ft)440 ft
- Nearest Airport19.6 miles (31.5 km)
- Distance to Coast16.2 miles (26.0 km)
ZIP 20879
Flower Hill CDP, MD
View full profile →- Snow Days/Year0 days
- Elevation (ft)440 ft
- Nearest Airport21.9 miles (35.3 km)
- Distance to Coast17.6 miles (28.3 km)
Visual comparison (same scale)
Snow Days/Year
0 days0 days
Elevation (ft)
440 ft440 ft
Nearest Airport
19.6 miles (31.5 km)21.9 miles (35.3 km)
Distance to Coast
16.2 miles (26.0 km)17.6 miles (28.3 km)
Infrastructure
ZIP 20877
Gaithersburg city, MD
View full profile →- Work From Home %15.9%
- Walkability (0–100)65
- Broadband %93.2%
ZIP 20879
Flower Hill CDP, MD
View full profile →- Work From Home %13.2%
- Walkability (0–100)62
- Broadband %94.5%
Visual comparison (same scale)
Work From Home %
15.9%13.2%
Walkability (0–100)
6562
Broadband %
93.2%94.5%
Frequently Asked Questions
How do ZIP 20877 and 20879 compare?
ZIP 20877 is higher home values, more affordable rent, lower unemployment, higher work-from-home share. ZIP 20879 is wealthier, lower poverty rate, more diverse, more educated.
What do the blue and orange colors mean?
Blue represents the first ZIP (20877), orange the second (20879). 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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