40121 Zip Code Population and Demographics

In this article, we'll explore the population statistics for the zip code 40121, including popular demographics data like median age, number of households, household income, gender, employment and unemployment rates, occupations, religion, and more.

40121 is a zip code in Hardin County and Meade County, Kentucky, which covers Fort Knox CCD and Flaherty, with a total population of 8,916 people.

We are using the latest American Community Survey (ACS) 5-Year survey data from the US Census Bureau, which is accurate up to 2021.

Table of Contents

Population

There is a lot of data that lets us see how many people live in the 40121 zip code. The most basic data is the total population, which is the total number of people living in 40121.

The estimated population of people living in 40121 is 8,916, with a median age of 25.6.

We can look back at data from previous years to see how the population in the 40121 area has changed over the last 5 years.

Year Population Change 5-Year Change
2021
8,916
+0.58%
-1.94%
2020
8,865
+1.96%
-
2019
8,695
 -3.01% -
2018
8,965
 -1.4% -
2017
9,092
 - -

Population of 40121 by Race and Ethnicity

How much has the race and ethnicity of the population in the 40121 zip code changed? The US Census Bureau gives us a few defined types that the population is broken down into.

Let's look at the total numbers and also the change over the last 5 years.

Race 2021 2017 Change
White
51.4%
58.5%
 -12.14%
Black/African American
12.7%
15.6%
 -18.59%
Native
0.2%
1.6%
 -87.50%
Hispanic
27.5%
16.8%
 +63.69%
Asian
2.6%
1.8%
 +44.44%
Hawaiian/Pacific Islander
1.3%
1.2%
 +8.33%
Two Or More Races
4.1%
4.3%
 -4.65%
Other
0.1%
0%
 0.00%

This data can be very important for anybody studying the 40121 zip for a number of reasons, including social and economic research, planning and development, and marketing to a multi-cultural population.

Note that the Native group includes both Native American and Alaskan Native people.

Population of 40121 by Age and Gender

We can also monitor the change of the age and gender in the 40121 zip code to track track trends in the population over time.

We can see how the population in 40121 has changed over the last 5 years by median age as a total, and also by male and female.

Year Total Male Female
2021 25.6 -5.19% 24.6 -5.38% 27 -1.82%
2020 27 +0.37% 26 -5.8% 27.5 +7.42%
2019 26.9 +5.49% 27.6 +6.15% 25.6 +4.07%
2018 25.5 +2.41% 26 +5.69% 24.6 -2.38%
2017 24.9 - 24.6 - 25.2 -

The median age of the 40121 zip gives you an idea of the age distribution, with half of the population being older than the median age and half being younger.

This can then be used to infer and compare against birth rates, parent ages, and more metrics to understand the population. For example, an increasing median age indicates an aging population in the 40121 area, which can be a sign of a declining population in terms of birth rates and workforce participation.

Age 2021 2017
(Years) Male Female Male Female
0 to 9 912 +11.03% 866 +11.42% 961 937
10 to 19 835 -22.47% 616 -8.53% 635 563
20 to 29 1,573 -5.36% 1,012 -19.95% 1,475 823
30 to 39 1,067 -1.87% 821 +13.37% 1,028 916
40 to 49 516 +11.1% 454 +16.16% 556 519
50 to 59 169 +12.05% 86 +59.39% 181 135
60 to 69 31 +59.96% 61 5.35% 44 60
70+ 28 28.72% 45 +36.12% 23 60

Median Household Income

The latest median household income for the 40121 zip code is $70,441.00.

In simple terms, the median income is the middle income of a group of people. Half of the people in the group make more than the median income, and half make less.

The median income is a good indicator of the overall income of a group of people, and can be used to compare against other metrics such as the average income, per capita income, and more.

Median Income by Age

We can also look at the median income by age to see how the median income varies by age, and how it compares to the overall median income for 40121.

  • Under 25
    $36,731.00
  • 25 to 44
    $74,653.00
  • 45 to 64
    $106,917.00
  • 65 and over
    $48,068.00

Average Household Income

Whenever we ask what is the average household income in the 40121 zip code, we are actually talking about the mean household income.

This is calculated by adding up all the incomes of all the households in 40121, and then dividing that number by the total number of households.

This is a good way to get a general idea of the average income of a group of people, but it can be skewed by a very high or very low incomes.

The average household income of 40121 is currently $84,579.00.

In terms of accurately summarizing income at a geographic level, the median income is a better metric than the average income because it isn't affected by a small number of very high or very low incomes.

If you had an area where the average income was greater than the median, it can mean that there is significant income inequality, with income being concentrated in a small number of wealthy households.

3.46% of households in 40121 are classed as high income households (making $200,000+ per year).

Household Income Tiers

The US Census Bureau divides households into income tiers based on the median income for the area. This is a good way to compare the income of 40121 against other zip codes.

  • Less than $24,999
    4.87%
  • $25,000 to $49,999
    21.73%
  • $50,000 to $74,999
    25.62%
  • $75,000 to $99,999
    13.71%
  • $100,000 to $149,999
    25.66%
  • $150,000 to $199,999
    4.95%
  • $200,000 or more
    3.46%

Per Capita Income

The per capita income in 40121 is $29,501.00.

Per capita income is the average income of a person in a given area. It is calculated by dividing the total income of 40121 by the total population of 40121.

This is different from the average or mean income because it includes and accounts for all people living in the 40121 area, including people like children, the elderly, unemployed people, retired people, and more.

Education Levels

We can also look at the education levels in 40121 to see how many people have a high school degree, a bachelor's degree, or a graduate degree.

Educational attainment is a good indicator of the overall education level of a population, and can be used to compare against other metrics such as the average income, per capita income, and more to see how education levels affect income, unemployment rates, and more.

  • Master's degree or higher
    27.90%
  • Bachelor's degree
    37.02%
  • Some college or associate's degree
    11.17%
  • High school diploma or equivalent
    17.52%
  • Less than high school diploma
    6.39%

Employment

Employment rates are all based around the total population in 40121 that are over the age of 16.

Currently, the total population of the 40121 zip over the age of 16 is 6,339.

Of those people, a total of 78.80% are working or actively looking for work. This is called the labor force participation rate.

The participation rate is a useful market measure because it shows the relative amount of labor resources available to the economy.

The employment to total population rate in 40121 is 27.70%.

Employment by Age

We can look at the employment rates by age to see how it compares to the overall employment rate. Here's how that breaks down for the 40121 zip code.

Age Population Participation Unemployment Rate
16 to 19 years 519 60.70% 1.50%
20 to 24 years 1,255 95.30% 4.10%
25 to 29 years 1,043 77.20% 3.80%
30 to 34 years 1,014 86.20% 9.60%
35 to 44 years 1,654 76.80% 15.00%
45 to 54 years 581 72.10% 5.80%
55 to 59 years 86 77.90% 3.30%
60 to 64 years 72 52.80% 30.30%
65 to 74 years 72 12.50% 0.00%
75 years and over 43 0.00% 0.00%

Employment by Race

Another very interesting employment statistic we can look at is the employment and unemployment rates by race in 40121. The table below shows the rates for each of the ethnicity groups types defined by the US Census Bureau (which we mentioned earlier in this article).

Age Population Participation Unemployment Rate
White 4,002 79.30% 5.20%
Black or African American 880 84.40% 5.90%
American Indian and Alaska Native 48 100.00% 0.00%
Asian 224 78.10% 0.00%
Native Hawaiian and Other Pacific Islander 31 48.40% 6.70%
Other 196 85.70% 6.30%
Two or more races 958 69.90% 24.00%
Hispanic or Latino 1,625 79.10% 15.50%
Not Hispanic or Latino 3,391 78.40% 6.00%

Occupations

In this section we can look at the most common occupations for people living in the 40121 area as well as the gender breakdown and earnings of them.

The total population of civilian employees that are 16 years old or older in 40121 is 1,758, with median earnings of $36,615.00.

Women in 40121 are earning approximately 61.00% of the men's earnings.

Population Earnings
Total 1,758 $36,615.00
Male 623 $46,181.00
Female 1,135 $28,170.00

Occupations by Category

In the table below, we can break down the population and earnings for 40121 even further by occupation. The list of occupation categories below will show you how many people are employed in each category and the median earnings of each profession.

Occupation Employed Earnings
Management 205 $38,794.00
Business and Financial 104 $45,278.00
Computer and Mathematical 100 $96,786.00
Architecture and Engineering 36 $80,357.00
Life, Physical, and Social Science 0 $0.00
Community and Social Service 42 $21,638.00
Legal 21 $0.00
Educational and Library 43 $13,750.00
Arts, Design, Entertainment, Sports, and Media 41 $62,986.00
Healthcare Practitioners 82 $37,250.00
Healthcare Support 37 $35,446.00
Firefighters and Protective Service 11 $0.00
Law Enforcement 49 $42,188.00
Food Preparation and Serving 99 $7,257.00
Building and Grounds Cleaning 18 $0.00
Personal Care and Service 137 $10,456.00
Sales 266 $35,386.00
Office and Administrative Support 144 $28,929.00
Farming, Fishing, and Forestry 30 $0.00
Construction and Extraction 84 $41,633.00
Installation, Maintenance, and Repair 55 $44,688.00
Production 107 $30,787.00
Transportation and Material Moving 9 $0.00

Occupations by Gender

Now we can also look at the occupations by category for 40121 when it is broken down by male and female.

This lets us see how many male and females work in each occupation, the median earnings, and the male to female ratio of earnings for 40121.

That last metric is important because it can be used to look at the gender pay gap between men and women.

Occupation Male Female
Population Earnings Population Earnings
Management 59 $65,938.00 146 $38,518.00
Business and Financial 36 $52,500.00 68 $39,276.00
Computer and Mathematical 100 $96,786.00 0 $0.00
Architecture and Engineering 36 $80,357.00 0 $0.00
Life, Physical, and Social Science 0 $0.00 0 $0.00
Community and Social Service 0 $0.00 42 $21,638.00
Legal 0 $0.00 21 $0.00
Educational and Library 0 $0.00 43 $13,750.00
Arts, Design, Entertainment, Sports, and Media 6 $0.00 35 $62,569.00
Healthcare Practitioners 5 $0.00 77 $36,938.00
Healthcare Support 0 $0.00 37 $35,446.00
Firefighters and Protective Service 11 $0.00 0 $0.00
Law Enforcement 49 $42,188.00 0 $0.00
Food Preparation and Serving 14 $0.00 85 $7,326.00
Building and Grounds Cleaning 0 $0.00 18 $0.00
Personal Care and Service 16 $0.00 121 $10,456.00
Sales 29 $65,703.00 237 $35,193.00
Office and Administrative Support 12 $0.00 132 $19,872.00
Farming, Fishing, and Forestry 30 $0.00 0 $0.00
Construction and Extraction 82 $41,684.00 2 $0.00
Installation, Maintenance, and Repair 39 $40,893.00 16 $0.00
Production 71 $32,454.00 36 $0.00
Transportation and Material Moving 9 $0.00 0 $0.00

Households and Family Size

A household is defined by the US Census Bureau as a group of people who occupy a housing unit. A housing unit is a house, apartment, mobile home, group of rooms, or single room occupied as separate living quarters.

There are currently 2,342 households in 40121, with an average household size of 3.15 people.

A family is defined as a group of two or more people related by birth, marriage, or adoption who live together in the same household.

There are 1,692 families living in the 40121 zip code with an average family size of 3.94 people.

Households by Marital Status

The four categories of household by marital status are:

  • Married-couple family
  • Male householder with no spouse present
  • Female household with no spouse present
  • Nonfamily household

The table below shows the total number of households and families, with the average sizes of each, that live in 40121:

Married Male Female Nonfamily
Total Households 1,476 69 147 650
Average Household Size 4.05 2.55 3.71 1.06
Total Families 1,476 69 147 0
Average Household Size 4.05 2.41 3.59 0

Poverty

Of the 1,692 families living in 40121, 4.00% are considered to be below the poverty threshold.

The table below shows the latest poverty thresholds in 40121:

Household Size Poverty Threshold
1 Person $14,580.00
2 People $19,720.00
3 People $24,860.00
4 People $30,000.00
5 People $35,140.00
6 People $40,280.00
7 People $45,420.00
8 People $50,560.00

Housing

There are 2,618 housing units in 40121.

The table below shows the split between occupied and vacant units:

Total Percentage
Occupied 2,342 89.46%
Vacant 276 10.54%

85.29% of the total 2,618 housing units in 40121 are rental units. This is approximately 2,233 properties.

For owner-occupied housing units, a total of 15 are occupied by the owner - or 0.57% of the total.

Rental Rates

The median rent for a property in 40121 is $1,114.00.

In the chart below, we can look at the number of rental properties in 40121 that fall into a particular rent range. These can then be used to compare with other areas, or to see how they have changed over time.

  • No rent paid
    94
  • 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

Property Value

The median value of a property in 40121 is $0.00.

Just like with rental rates, we can look at the number of properties in 40121 that fall into a particular value range.

  • 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

Property Age

We can also look at the age of properties in 40121. The chart below shows the number of properties in 40121 that fall into a particular age range.

  • 1939 or earlier
    187
  • 1940 to 1949
    148
  • 1950 to 1959
    372
  • 1960 to 1969
    410
  • 1970 to 1979
    354
  • 1980 to 1989
    227
  • 1990 to 1999
    138
  • 2000 to 2009
    318
  • 2010 to 2013
    464
  • 2014 or later
    0

Vehicles per Household

The number of vehicles available per household can be a good indicator of the level of affluence in an area. The chart below shows the number of households in 40121 that have a particular number of vehicles available.

  • No vehicles available
    35
  • 1 vehicle available
    794
  • 2 vehicles available
    1,271
  • 3 or more vehicles available
    242

Commuting to Work

In this section, we can also look at how people in 40121 get to work. The chart below shows the number of people in 40121 that commute to work in a particular way.

12.5 minutes is the average travel time to work for people in 40121.

These commute times can be compared to other date like income and educational levels to see how they relate to each other and if there are any trends in the data that might suggest a correlation.

  • Less than 5 minutes
    755
  • 5 to 9 minutes
    1,316
  • 10 to 14 minutes
    1,199
  • 15 to 19 minutes
    705
  • 20 to 24 minutes
    86
  • 25 to 29 minutes
    37
  • 30 to 34 minutes
    131
  • 35 to 39 minutes
    146
  • 40 to 44 minutes
    41
  • 45 to 59 minutes
    96
  • 60 to 89 minutes
    66
  • 90 or more minutes
    30

Summary

We've covered a LOT of demographic and population data for 40121 in this article! Hopefully you have found it very useful in your research of the area.

If you use any of the data found on this page, please consider linking back to USPopulation.org as the source and if you have any feedback or data requests, click here to contact us.

States in 40121

If you want to see how the population and demographics of 40121 compare to other zip codes in Kentucky, check out the list of all Kentucky zip codes below: