42788 vs 40121 — Compare ZIP Codes
Side-by-side comparison. Blue = ZIP 42788, Orange = ZIP 40121.
Quick verdict: ZIP 42788 is lower unemployment, higher work-from-home share. ZIP 40121 is wealthier, lower poverty rate, more diverse, more educated.
Quick Facts
ZIP 42788
KY
View full profile →- Population339
- Median Income$53,668
- Median Home Value$223k
- Median Rent—
- Median Age41.4 yrs
- Poverty Rate15.9%
ZIP 40121
Fort Knox CDP, KY
View full profile →- Population8,715
- Median Income$74,224
- Median Home Value—
- Median Rent$1,218
- Median Age24.3 yrs
- Poverty Rate8.0%
Visual comparison (same scale)
Population
3398,715
Median Income
$53,668$74,224
Median Home Value
$223k—
Median Rent
—$1,218
Median Age
41.4 yrs24.3 yrs
Poverty Rate
15.9%8.0%
Demographics
ZIP 42788
KY
View full profile →- White %89.4%
- Black %6.8%
- Asian %0.0%
- Hispanic %0.0%
- Age 0–17 %8.6%
- Age 18–64 %78.2%
- Age 65+ %13.3%
- Bachelor's+ %14.8%
- Diversity Index20/100
ZIP 40121
Fort Knox CDP, KY
View full profile →- White %59.4%
- Black %16.0%
- Asian %2.3%
- Hispanic %25.1%
- Age 0–17 %32.3%
- Age 18–64 %66.0%
- Age 65+ %1.7%
- Bachelor's+ %42.1%
- Diversity Index56/100
Visual comparison (same scale)
White %
89.4%59.4%
Black %
6.8%16.0%
Asian %
0.0%2.3%
Hispanic %
0.0%25.1%
Age 0–17 %
8.6%32.3%
Age 18–64 %
78.2%66.0%
Age 65+ %
13.3%1.7%
Bachelor's+ %
14.8%42.1%
Diversity Index
20/10056/100
Economy
ZIP 42788
KY
View full profile →- Median Income$53,668
- Unemployment %0.0%
- IRS Net Migration+13
- Work From Home %5.7%
ZIP 40121
Fort Knox CDP, KY
View full profile →- Median Income$74,224
- Unemployment %10.4%
- IRS Net Migration+325
- Work From Home %3.4%
Visual comparison (same scale)
Median Income
$53,668$74,224
Unemployment %
0.0%10.4%
IRS Net Migration
+13+325
Work From Home %
5.7%3.4%
Housing
ZIP 42788
KY
View full profile →- Median Home Value$223k
- Median Rent—
- Owner Occupied %100.0%
- Broadband %100.0%
- Vacant %0.0%
- Median Year Built2001
ZIP 40121
Fort Knox CDP, KY
View full profile →- Median Home Value—
- Median Rent$1,218
- Owner Occupied %0.7%
- Broadband %93.5%
- Vacant %10.8%
- Median Year Built1977
Visual comparison (same scale)
Median Home Value
$223k—
Median Rent
—$1,218
Owner Occupied %
100.0%0.7%
Broadband %
100.0%93.5%
Vacant %
0.0%10.8%
Median Year Built
20011977
Climate & Location
ZIP 42788
KY
View full profile →- Snow Days/Year0 days
- Elevation (ft)600 ft
- Nearest Airport26.3 miles (42.3 km)
- Distance to Coast287.8 miles (463.1 km)
ZIP 40121
Fort Knox CDP, KY
View full profile →- Snow Days/Year0 days
- Elevation (ft)615 ft
- Nearest Airport4.1 miles (6.6 km)
- Distance to Coast260.7 miles (419.6 km)
Visual comparison (same scale)
Snow Days/Year
0 days0 days
Elevation (ft)
600 ft615 ft
Nearest Airport
26.3 miles (42.3 km)4.1 miles (6.6 km)
Distance to Coast
287.8 miles (463.1 km)260.7 miles (419.6 km)
Infrastructure
ZIP 40121
Fort Knox CDP, KY
View full profile →- Work From Home %3.4%
- Walkability (0–100)29
- Broadband %93.5%
Visual comparison (same scale)
Work From Home %
5.7%3.4%
Walkability (0–100)
—29
Broadband %
100.0%93.5%
Frequently Asked Questions
How do ZIP 42788 and 40121 compare?
ZIP 42788 is lower unemployment, higher work-from-home share. ZIP 40121 is wealthier, lower poverty rate, more diverse, more educated.
What do the blue and orange colors mean?
Blue represents the first ZIP (42788), orange the second (40121). 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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