Comparison to Surrounding Areas
The median household income ($82,663) for 40121 is more than 40155 ($60,508), 40160 ($58,506), 40165 ($79,540), 40177 ($50,577), Meade County ($74,355), Hardin County ($67,647), and Muldraugh city ($60,508). And it's the same as Fort Knox CDP ($82,663).
| 40121 | $82,663 |
| Fort Knox CDP | $82,663 |
| Muldraugh city | $60,508 |
| Hardin County | $67,647 |
| Meade County | $74,355 |
Get Median Household Income for all Zip Codes in Kentucky.
The average household income ($98,539) for 40121 is more than 40155 ($76,974), 40160 ($77,284), 40165 ($97,086), 40177 ($60,887), Meade County ($93,797), Hardin County ($93,596), and Muldraugh city ($76,974). And it's the same as Fort Knox CDP ($98,539).
| 40121 | $98,539 |
| Fort Knox CDP | $98,539 |
| Muldraugh city | $76,974 |
| Hardin County | $93,596 |
| Meade County | $93,797 |
Get Average Household Income for all Zip Codes in Kentucky.
The per-capita income for 40121 is $32,370. The per capita income ($32,370) for 40121 is less than the per capita income for 40155 ($36,939), 40165 ($38,014), Hardin County ($37,638), Meade County ($36,483), and Muldraugh city ($36,939). But it's more than 40160 ($31,233) and 40177 ($27,972). And it's the same as Fort Knox CDP ($32,370).
| 40121 | $32,370 |
| Fort Knox CDP | $32,370 |
| Muldraugh city | $36,939 |
| Hardin County | $37,638 |
| Meade County | $36,483 |
Get Per-Capita Income for all Zip Codes in Kentucky.
7.4% of households make over $200,000 a year. The percent high income households (7.4%) for 40121 is less than the percent high income households for 40165 (7.7%). But it's more than 40155 (3.2%), 40160 (4.1%), 40177 (1.7%), Hardin County (7.2%), Meade County (7.3%), and Muldraugh city (3.2%). And it's the same as Fort Knox CDP (7.4%).
| 40121 | 7.4% |
| Fort Knox CDP | 7.4% |
| Muldraugh city | 3.2% |
| Hardin County | 7.2% |
| Meade County | 7.3% |
Get High Income Households for all Zip Codes in Kentucky.
| under 25 years | 25 to 44 years | 45 to 64 years | 65 years and over | |
|---|---|---|---|---|
| 40121 | $47,396 | $73,253 | $178,210 | $64,722 |
| Fort Knox CDP | $47,396 | $73,253 | $178,210 | $64,722 |
| Muldraugh city | $-1 | $60,795 | $41,250 | $62,843 |
| Hardin County | $48,271 | $72,701 | $79,230 | $50,654 |
| Meade County | $61,484 | $80,238 | $87,237 | $60,494 |
Get Median Household Income by Age of Householder for all Zip Codes in Kentucky.
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All income statistics above are the most current, comparable income statistics available from the US Census Bureau and are from the American Community Survey 2024 5-year estimates. You can find this information and other demographics for 40121 on the US Census Bureau’s website. These values are in 2024 inflation-adjusted dollars and were downloaded on 29 January 2026.
Margins of error for the income data are:
| Median Household Income | Average Household Income | Per Capita Income | High Income Households | Median Household Income by Age of Householder | ||||
|---|---|---|---|---|---|---|---|---|
| under 25 | 25 to 44 | 45 to 64 | 65+ | |||||
| 40121 | +/-$14,292 | +/-$10,813 | +/-$2,952 | +/-3.9% | +/-$26,781 | +/-$7,824 | +/-$13,992 | +/-$23,639 |
| Fort Knox CDP | +/-$14,292 | +/-$10,813 | +/-$2,952 | +/-3.9% | +/-$26,781 | +/-$7,824 | +/-$13,992 | +/-$23,639 |
| Muldraugh city | +/-$21,412 | +/-$27,864 | +/-$14,981 | +/-3.6% | +/-$-1 | +/-$23,606 | +/-$19,452 | +/-$36,087 |
| Hardin County | +/-$2,772 | +/-$5,719 | +/-$2,299 | +/-0.8% | +/-$6,638 | +/-$2,856 | +/-$4,259 | +/-$3,310 |
| Meade County | +/-$4,361 | +/-$5,209 | +/-$1,837 | +/-1.9% | +/-$33,100 | +/-$10,633 | +/-$14,384 | +/-$7,665 |