ZIP 40121 · Fort Knox
Who lives in ZIP code 40121 (Fort Knox, KY): age, income, housing, education and work.
Source: uszips 2026 (ACS-based ZIP file)
2026 ZIP profile
Fort Knox, KY · Hardin County
uszips 2026
People8,836
Median age24.0
Household income$82,663
Home value—
Median rent$1,502/mo
Poverty9.0%
College degree+48.3%
Commute12 min
Place
- Metro area
- Elizabethtown, KY
- Wider region
- Louisville/Jefferson County--Elizabethtown, KY-IN
- Time zone
- Eastern
- Density
- 97 / sq mi
- Housing units
- 2,226
Spans 2 counties
Share of the ZIP's people in each county.
Age mix
1.8% are 65 or older; 66.5% are adults.
Household income
42.1% of households earn $100K+. Median per person: $43,339.
Education (adults 25+)
32.9% of degrees are in STEM fields.
Race
22.7% Hispanic or Latino (of any race).
Households & family
- Married
- 54.7%
- Never married
- 36.6%
- Divorced
- 7.9%
- Widowed
- 0.7%
- Family size
- 3.86
- Dual-income families
- 50.1%
Housing
- Own their home
- 0.0%
- Rent burden
- 21.8%
- Men / women
- 55% / 45%
Work
- In labor force
- 83.3%
- Unemployment
- 15.1%
- Self-employed
- 3.1%
- Farmers
- 0.0%
Community
- Charitable givers
- 10.4%
- Veterans
- 20.9%
- With a disability
- 10.1%
- No health insurance
- 5.4%
- Limited English
- 1.0%
Source: uszips 2026 (ACS-based ZIP file). Shares are percentages of people, households or adults as the measure implies.