17320 vs 21719 — Compare ZIP Codes
Side-by-side comparison. Blue = ZIP 17320, Orange = ZIP 21719.
Quick verdict: ZIP 17320 is wealthier, higher home values, more affordable rent, lower unemployment, more diverse, more educated. ZIP 21719 is lower poverty rate, higher work-from-home share.
Quick Facts
ZIP 17320
Carroll Valley borough, PA
View full profile →- Population8,103
- Median Income$87,321
- Median Home Value$283k
- Median Rent$1,057
- Median Age45.8 yrs
- Poverty Rate9.8%
ZIP 21719
Highfield-Cascade CDP, MD
View full profile →- Population1,162
- Median Income$75,278
- Median Home Value$231k
- Median Rent$1,292
- Median Age39.7 yrs
- Poverty Rate3.8%
Visual comparison (same scale)
Population
8,1031,162
Median Income
$87,321$75,278
Median Home Value
$283k$231k
Median Rent
$1,057$1,292
Median Age
45.8 yrs39.7 yrs
Poverty Rate
9.8%3.8%
Demographics
ZIP 17320
Carroll Valley borough, PA
View full profile →- White %92.5%
- Black %0.7%
- Asian %0.3%
- Hispanic %4.4%
- Age 0–17 %20.7%
- Age 18–64 %58.2%
- Age 65+ %21.1%
- Bachelor's+ %26.0%
- Diversity Index14/100
ZIP 21719
Highfield-Cascade CDP, MD
View full profile →- White %99.3%
- Black %0.0%
- Asian %0.7%
- Hispanic %0.0%
- Age 0–17 %24.1%
- Age 18–64 %54.0%
- Age 65+ %21.9%
- Bachelor's+ %22.3%
- Diversity Index1/100
Visual comparison (same scale)
White %
92.5%99.3%
Black %
0.7%0.0%
Asian %
0.3%0.7%
Hispanic %
4.4%0.0%
Age 0–17 %
20.7%24.1%
Age 18–64 %
58.2%54.0%
Age 65+ %
21.1%21.9%
Bachelor's+ %
26.0%22.3%
Diversity Index
14/1001/100
Economy
ZIP 17320
Carroll Valley borough, PA
View full profile →- Median Income$87,321
- Unemployment %2.0%
- IRS Net Migration+369
- Work From Home %12.8%
ZIP 21719
Highfield-Cascade CDP, MD
View full profile →- Median Income$75,278
- Unemployment %2.5%
- IRS Net Migration+68
- Work From Home %27.0%
Visual comparison (same scale)
Median Income
$87,321$75,278
Unemployment %
2.0%2.5%
IRS Net Migration
+369+68
Work From Home %
12.8%27.0%
Housing
ZIP 17320
Carroll Valley borough, PA
View full profile →- Median Home Value$283k
- Median Rent$1,057
- Owner Occupied %88.4%
- Broadband %86.6%
- Vacant %7.6%
- Median Year Built1989
ZIP 21719
Highfield-Cascade CDP, MD
View full profile →- Median Home Value$231k
- Median Rent$1,292
- Owner Occupied %90.1%
- Broadband %86.8%
- Vacant %18.8%
- Median Year Built1943
Visual comparison (same scale)
Median Home Value
$283k$231k
Median Rent
$1,057$1,292
Owner Occupied %
88.4%90.1%
Broadband %
86.6%86.8%
Vacant %
7.6%18.8%
Median Year Built
19891943
Climate & Location
ZIP 17320
Carroll Valley borough, PA
View full profile →- Snow Days/Year0 days
- Elevation (ft)710 ft
- Nearest Airport18.5 miles (29.8 km)
- Distance to Coast51.9 miles (83.5 km)
ZIP 21719
Highfield-Cascade CDP, MD
View full profile →- Snow Days/Year0 days
- Elevation (ft)1,610 ft
- Nearest Airport12.4 miles (20.0 km)
- Distance to Coast53.8 miles (86.5 km)
Visual comparison (same scale)
Snow Days/Year
0 days0 days
Elevation (ft)
710 ft1,610 ft
Nearest Airport
18.5 miles (29.8 km)12.4 miles (20.0 km)
Distance to Coast
51.9 miles (83.5 km)53.8 miles (86.5 km)
Infrastructure
ZIP 17320
Carroll Valley borough, PA
View full profile →- Work From Home %12.8%
- Walkability (0–100)23
- Broadband %86.6%
ZIP 21719
Highfield-Cascade CDP, MD
View full profile →- Work From Home %27.0%
- Walkability (0–100)26
- Broadband %86.8%
Visual comparison (same scale)
Work From Home %
12.8%27.0%
Walkability (0–100)
2326
Broadband %
86.6%86.8%
Frequently Asked Questions
How do ZIP 17320 and 21719 compare?
ZIP 17320 is wealthier, higher home values, more affordable rent, lower unemployment, more diverse, more educated. ZIP 21719 is lower poverty rate, higher work-from-home share.
What do the blue and orange colors mean?
Blue represents the first ZIP (17320), orange the second (21719). 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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