Fort Knox, KY 40121 ZIP Code Profile


ZIP Code 40121: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Fort Knox, KY 40121

  • ZIP Code Type: STANDARD
  • County: Hardin County
  • Centroid: Latitude 37.927, Longitude -85.913
  • Time Zone: Eastern Time Zone (UTC -5 hours)
  • Observes DST: Yes

ZIP Code 40121 has segments in 2 Counties (Hardin, Meade).

  • Businesses Addresses: 118
  • PO Box Addresses: 303
  • Residential Addresses: 2,934
    • Multi-Family Addresses: 266
    • Single Family Addresses: 2,668

The ZIP Code maps and database are updated 4 times per year.
Database updated: August 1, 2018, Maps updated: August 1, 2018.

Jump to... (On This Page!)
  1. 40121 2018 Demographic Data
  2. Growth Rates for 40121 (Historical & 5-Year Forecast)
  3. Peer Comparisons (Rank and Percentile)
  1. Neighborhoods Demographics (Home Values, Household Income, etc.)
  2. Kentucky Research Tools (Easy Tools & Current Data)
  3. Kentucky Data Comparison Tool - 2018 Demographics

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Boundary Maps, Demographic Data, School Zones Review maps and data for the neighborhood, city, county, ZIP Code, and school zone. July 1, 2018, data includes home values, household income, percentage of homes owned, rented or vacant, etc.


Fort Knox, KY 40121 Data & Demographics (As of July 1, 2018)


Total Population 10,949
Population in Households 7,907
Population in Familes 7,641
Population in Group Qrtrs 3,042
Population Density2 115
Diversity Index3 64


Median Household Income $53,288
Average Household Income $62,662
Per Capita Income $19,166


Total Housing Units 3,063 (100%)
Owner Occupied HU 14 ( 0.5%)
Renter Occupied HU 2,287 (74.7%)
Vacant Housing Units 762 (24.9%)
Median Home Value $0
Average Home Value $0


Total Households 2,301
Average Household Size 3.44
Family Households 2,093
Average Family Size 4
  1. Demographics are point estimates for July 1st of the current year and each for the forecast years. See References for more information.
  2. Population Density = Total Population per square mile.
  3. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.


2010-2018 2018-2023
Population 0.95% -0.08%
Households -0.32% -0.09%
Families -0.36% -0.12%
Median Household Income   1.71%
Per Capita Income   1.68%

Fort Knox, KY 40121 - Peer Comparisons by Rank and Percentile

The table below compares 40121 to the other 754 ZIP Codes in Kentucky by rank and percentile using July 1, 2018 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 126 83rd
Population Density # 200 74th
Diversity Index # 5 99th
Median Household Income # 116 85th
Per Capita Income # 525 31st

Additional comparisons and rankings can be made with a VERY EASY TO USE Kentucky Census Data Comparison Tool.

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