ZIP Code 40121
| ZIP Code | 40121 |
| City | FORT KNOX |
| State | KY |
| Type | STANDARD |
| Post offices count | 1 (see all) |
| Total population | 8,916 (see all) |
Cities in ZIP Code 40121
Primary city: FORT KNOX, KYPost offices
FORT KNOX — Post Office™ 120 N KNOX ST FRNT FORT KNOX, KY 40121-9908 MoreFORT KNOX — Post Office™120 N KNOX ST FRNT For facility accessibility, please call the Post Office. 1-800-ASK-USPS® (800-275-8777) Hours
Services at this Location Service hours may vary.
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Census data for ZIP Code 40121
Demographic and housing estimates in ZIP Code 40121
| Total population | 8,916 |
| Male | 4,903 |
| Female | 4,013 |
| Total population | 8,916 |
| Under 5 years | 1,117 |
| 5 to 9 years | 781 |
| 10 to 14 years | 615 |
| 15 to 19 years | 583 |
| 20 to 24 years | 1,255 |
| 25 to 34 years | 2,057 |
| 35 to 44 years | 1,654 |
| 45 to 54 years | 581 |
| 55 to 59 years | 86 |
| 60 to 64 years | 72 |
| 65 to 74 years | 72 |
| 75 to 84 years | 20 |
| 85 years and over | 23 |
| Median age (years) | 25.6 |
| Under 18 years | 2,788 |
| 16 years and over | 6,339 |
| 18 years and over | 6,128 |
| 21 years and over | 5,530 |
| 62 years and over | 142 |
| 65 years and over | 115 |
| Total population | 8,916 |
| One race | 7,517 |
| White | 5,422 |
| Black or African American | 1,234 |
| American Indian and Alaska Native | 48 |
| Asian | 264 |
| Native Hawaiian and Other Pacific Islander | 132 |
| Some other race | 417 |
| Two or more races | 1,399 |
| Citizen, VOTING AGE 18 and over population | 5,891 |
| Male Citizen, VOTING AGE 18 and over population | 3,504 |
| Female Citizen, VOTING AGE 18 and over population | 2,387 |
Social characteristics in ZIP Code 40121
| Total households | 2,342 |
| Family households (families) | 1,476 |
| Married-couple family | 43 |
| Male householder, no wife present, family | 485 |
| Female householder, no husband present, family | 419 |
| Nonfamily households | 338 |
| Average household size | 87 |
| Average family size | 3.15 |
Economic characteristics in ZIP Code 40121
| Total households | 2,342 |
| Less than $10,000 | 29 |
| $10,000 to $14,999 | 17 |
| $15,000 to $24,999 | 68 |
| $25,000 to $34,999 | 206 |
| $35,000 to $49,999 | 303 |
| $50,000 to $74,999 | 600 |
| $75,000 to $99,999 | 321 |
| $100,000 to $149,999 | 601 |
| $150,000 to $199,999 | 116 |
| $200,000 or more | 81 |
| Median household income (dollars) | 70,441 |
Housing characteristics in ZIP Code 40121
| Total housing units | 2,618 |
| Occupied housing units | 2,342 |
| Vacant housing units | 276 |
| Total housing units | 2,618 |
| 1-unit, detached | 646 |
| 1-unit, attached | 1,107 |
| 2 units | 248 |
| 3 or 4 units | 62 |
| 5 to 9 units | 190 |
| 10 to 19 units | 123 |
| 20 or more units | 238 |
| Mobile home | 4 |
| Boat, RV, van, etc. | 0 |
| Total housing units | 2,618 |
| Built 2014 or later | 0 |
| Built 2010 to 2013 | 464 |
| Built 2000 to 2009 | 318 |
| Built 1990 to 1999 | 138 |
| Built 1980 to 1989 | 227 |
| Built 1970 to 1979 | 354 |
| Built 1960 to 1969 | 410 |
| Built 1950 to 1959 | 372 |
| Built 1940 to 1949 | 148 |
| Built 1939 or earlier | 187 |
| Total housing units | 2,618 |
| 1 room | 257 |
| 2 rooms | 29 |
| 3 rooms | 109 |
| 4 rooms | 302 |
| 5 rooms | 599 |
| 6 rooms | 481 |
| 7 rooms | 426 |
| 8 rooms | 123 |
| 9 rooms or more | 292 |
| Median rooms | 5.5 |
| Total housing units | 2,618 |
| No bedroom | 257 |
| 1 bedroom | 105 |
| 2 bedrooms | 303 |
| 3 bedrooms | 1,538 |
| 4 bedrooms | 252 |
| 5 or more bedrooms | 163 |
| Occupied housing units | 2,342 |
| Owner-occupied | 15 |
| Renter-occupied | 2,327 |
| Average household size of owner-occupied unit | 2.27 |
| Average household size of renter-occupied unit | 3.16 |
| Occupied housing units | 2,342 |
| Moved in 2017 or later | 667 |
| Moved in 2015 to 2016 | 1,487 |
| Moved in 2010 to 2014 | 174 |
| Moved in 2000 to 2009 | 12 |
| Moved in 1990 to 1999 | 2 |
| Moved in 1989 and earlier | 0 |
| Owner-occupied units | 15 |
| Less than $50,000 | 15 |
| $50,000 to $99,999 | 0 |
| $100,000 to $149,999 | 0 |
| $150,000 to $199,999 | 0 |
| $200,000 to $299,999 | 0 |
| $300,000 to $499,999 | 0 |
| $500,000 to $999,999 | 0 |
| $1,000,000 or more | 0 |
| Median (dollars) | -666,666,666 |
| Owner-occupied units | 15 |
| Housing units with a mortgage | 0 |
| Housing units without a mortgage | 15 |
| Occupied units paying rent | 2,233 |
| Less than $500 | 183 |
| $500 to $999 | 674 |
| $1,000 to $1,499 | 958 |
| $1,500 to $1,999 | 392 |
| $2,000 to $2,499 | 26 |
| $2,500 to $2,999 | 0 |
| $3,000 or more | 0 |
| Median (dollars) | 1,114 |
| No rent paid | 94 |
Data is based on 2021 Census