40121 ZIP Code – Fort Knox, Kentucky

Located in Fort Knox, Kentucky, ZIP code 40121 is a mid-sized ZIP code within Hardin County with a population of approximately 8,655 residents. The median household income is $76,864 — above the Kentucky average and near the national average. Housing consists of 73% single-family (increasing), 13% apartments (decreasing), 14% duplex/multi-family.

Unemployment stands at 10.4%, which is well above the U.S. rate. An estimated 8.0% of the population falls below the poverty line, below the national figure. An estimated 42.1% of adults hold a bachelor's degree or higher, well above the national average. The median age is 24.3, well below the national median. The surrounding area includes ZIP codes 40155, 40177, 40160.

ZIP Code 40121 Data

Population 8,655

Median Household Income $76,864

Median Home Value Not provided

Median Rent $1,178

Median Age 24.3

Unemployment Rate 10.4%

Poverty Rate 8.0%

Bachelor's Degree or Higher 42.1%

County Hardin County

State Kentucky

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ZIP 40121 vs. Kentucky vs. U.S.

Metric	ZIP 40121	KY Avg.	U.S. Avg.
Population	8,655	5,902	10k
Median Household Income	$76k	$55k	$73k
Median Home Value	—	$139k	$258k
Median Rent	$1,178	$801	$1,088
Median Age	24.3	42.4	43.2
Unemployment Rate	10.4%	5.6%	5.0%
Poverty Rate	8.0%	21.4%	13.3%
Bachelor's Degree or Higher	42.1%	16.9%	26.9%

Demographics Charts

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Education Level (adults 25+)

Nearby ZIP Codes

Nearby ZIP Code Comparison

ZIP Code	City	Population	Median Income
40155	MULDRAUGH	1,221	$49,375
40177	WEST POINT	1,510	$42,284
40160	RADCLIFF	23,539	$54,046
40117	EKRON	2,261	$52,991
47135	LACONIA	736	$74,917