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ZIP Code 40121
Fort Knox, KY, Hardin County
Population
8,836
Land area
35.2sq mi
People per sq mi
251
City
Fort Knox
ZIP 40121 and nearby ZIP codes
ZIP 40121 at a glance
- ZIP 40121 (Fort Knox) is about 2.2 times as dense as Kentucky as a whole.
- The median household income is $82,663, 30% above the Kentucky median of $63,726.
- Median rent is $1,502 a month.
Local data for ZIP 40121
Counts from official public data
Housing and community stats
ZIP 40121, American Community Survey 2020-2024
Median household income
$82,663
Poverty rate
9.0%
Median rent
$1,502/mo
Homeownership
0.0%
Bachelor's or higher
48.3%
Median age
24.0
Average commute
12.4 min
Economy and federal money
Businesses, pandemic loans and political donations
Business establishments
55
ZIP Business Patterns 2023
Employees
1,015
$55.5M annual payroll
PPP loans
$251K
20 loans
Campaign donations
$551
0% D, 94% R, 2026 cycle
Environment and hazard risk
ZIP 40121, from FEMA, NOAA and EPA
Natural hazard risk
Relatively Low
Top: strong wind
Storm events since 1996
451
Countywide, mostly thunderstorm wind
Flood insurance policies
308
0.8% of homes, county
July high / Jan low
86° / 23°F
53.3 inches of rain a year
Frequently asked questions
- What city is ZIP code 40121?
- ZIP code 40121 is in Fort Knox, KY (Hardin County).
- What county is ZIP code 40121 in?
- ZIP code 40121 is mostly in Hardin County, Kentucky.
- How many people live in ZIP code 40121?
- About 8,836 people live in the 40121 ZIP Code Tabulation Area, based on American Community Survey 5-year estimates.
Source: U.S. Census Bureau (ZIP Code Tabulation Areas, American Community Survey) · Data as of 12/31/2023. ZIP Code Tabulation Areas closely match, but are not identical to, USPS ZIP code delivery areas.