18656 vs 18621 — Compare ZIP Codes
Side-by-side comparison. Blue = ZIP 18656, Orange = ZIP 18621.
Quick verdict: ZIP 18656 is wealthier, higher home values, more affordable rent, lower poverty rate, lower unemployment, more educated, higher work-from-home share. ZIP 18621 is more diverse.
Quick Facts
ZIP 18656
PA
View full profile →- Population2,128
- Median Income$74,764
- Median Home Value$207k
- Median Rent$681
- Median Age48.4 yrs
- Poverty Rate5.2%
ZIP 18621
Silkworth CDP, PA
View full profile →- Population4,903
- Median Income$66,492
- Median Home Value$191k
- Median Rent$698
- Median Age49.5 yrs
- Poverty Rate5.5%
Visual comparison (same scale)
Population
2,1284,903
Median Income
$74,764$66,492
Median Home Value
$207k$191k
Median Rent
$681$698
Median Age
48.4 yrs49.5 yrs
Poverty Rate
5.2%5.5%
Demographics
ZIP 18656
PA
View full profile →- White %95.7%
- Black %0.3%
- Asian %0.8%
- Hispanic %0.0%
- Age 0–17 %19.0%
- Age 18–64 %59.0%
- Age 65+ %22.0%
- Bachelor's+ %24.7%
- Diversity Index8/100
ZIP 18621
Silkworth CDP, PA
View full profile →- White %89.9%
- Black %3.6%
- Asian %0.1%
- Hispanic %2.9%
- Age 0–17 %14.6%
- Age 18–64 %62.8%
- Age 65+ %22.6%
- Bachelor's+ %17.1%
- Diversity Index19/100
Visual comparison (same scale)
White %
95.7%89.9%
Black %
0.3%3.6%
Asian %
0.8%0.1%
Hispanic %
0.0%2.9%
Age 0–17 %
19.0%14.6%
Age 18–64 %
59.0%62.8%
Age 65+ %
22.0%22.6%
Bachelor's+ %
24.7%17.1%
Diversity Index
8/10019/100
Economy
ZIP 18656
PA
View full profile →- Median Income$74,764
- Unemployment %4.2%
- IRS Net Migration+97
- Work From Home %9.8%
ZIP 18621
Silkworth CDP, PA
View full profile →- Median Income$66,492
- Unemployment %4.8%
- IRS Net Migration+223
- Work From Home %8.7%
Visual comparison (same scale)
Median Income
$74,764$66,492
Unemployment %
4.2%4.8%
IRS Net Migration
+97+223
Work From Home %
9.8%8.7%
Housing
ZIP 18656
PA
View full profile →- Median Home Value$207k
- Median Rent$681
- Owner Occupied %93.3%
- Broadband %86.2%
- Vacant %17.1%
- Median Year Built1982
ZIP 18621
Silkworth CDP, PA
View full profile →- Median Home Value$191k
- Median Rent$698
- Owner Occupied %91.5%
- Broadband %83.6%
- Vacant %15.6%
- Median Year Built1976
Visual comparison (same scale)
Median Home Value
$207k$191k
Median Rent
$681$698
Owner Occupied %
93.3%91.5%
Broadband %
86.2%83.6%
Vacant %
17.1%15.6%
Median Year Built
19821976
Climate & Location
ZIP 18656
PA
View full profile →- Snow Days/Year0 days
- Elevation (ft)1,095 ft
- Nearest Airport23.9 miles (38.5 km)
- Distance to Coast107.8 miles (173.5 km)
ZIP 18621
Silkworth CDP, PA
View full profile →- Snow Days/Year0 days
- Elevation (ft)1,095 ft
- Nearest Airport20.4 miles (32.8 km)
- Distance to Coast100.5 miles (161.7 km)
Visual comparison (same scale)
Snow Days/Year
0 days0 days
Elevation (ft)
1,095 ft1,095 ft
Nearest Airport
23.9 miles (38.5 km)20.4 miles (32.8 km)
Distance to Coast
107.8 miles (173.5 km)100.5 miles (161.7 km)
Infrastructure
ZIP 18621
Silkworth CDP, PA
View full profile →- Work From Home %8.7%
- Walkability (0–100)21
- Broadband %83.6%
Visual comparison (same scale)
Work From Home %
9.8%8.7%
Walkability (0–100)
2321
Broadband %
86.2%83.6%
Frequently Asked Questions
How do ZIP 18656 and 18621 compare?
ZIP 18656 is wealthier, higher home values, more affordable rent, lower poverty rate, lower unemployment, more educated, higher work-from-home share. ZIP 18621 is more diverse.
What do the blue and orange colors mean?
Blue represents the first ZIP (18656), orange the second (18621). 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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