21104 Zip Code Population and Demographics

In this article, we'll explore the population statistics for the zip code 21104, including popular demographics data like median age, number of households, household income, gender, employment and unemployment rates, occupations, religion, and more.

21104 is a zip code in Baltimore County, Carroll County, and Howard County, Maryland, which covers District 2, District 5, Freedom, District 3, and West Friendship, with a total population of 6,212 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 21104 zip code. The most basic data is the total population, which is the total number of people living in 21104.

The estimated population of people living in 21104 is 6,212, with a median age of 46.1.

We can look back at data from previous years to see how the population in the 21104 area has changed over the last 5 years.

Year Population Change 5-Year Change
2021
6,212
+3.04%
+30.04%
2020
6,029
+4.63%
-
2019
5,762
+8.72%
-
2018
5,300
+10.95%
-
2017
4,777
 - -

Population of 21104 by Race and Ethnicity

How much has the race and ethnicity of the population in the 21104 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
75.4%
86.6%
 -12.93%
Black/African American
3.5%
3%
 +16.67%
Native
0%
0%
 0.00%
Hispanic
3.5%
1%
 +250.00%
Asian
11.5%
8.9%
 +29.21%
Hawaiian/Pacific Islander
0%
0%
 0.00%
Two Or More Races
5.8%
0.5%
 +1,060.00%
Other
0.3%
0%
 0.00%

This data can be very important for anybody studying the 21104 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 21104 by Age and Gender

We can also monitor the change of the age and gender in the 21104 zip code to track track trends in the population over time.

We can see how the population in 21104 has changed over the last 5 years by median age as a total, and also by male and female.

Year Total Male Female
2021 46.1 -2.54% 44.7 -2.61% 47.2 -4.65%
2020 47.3 -1.05% 45.9 -1.71% 49.5 -1.2%
2019 47.8 0% 46.7 -1.27% 50.1 +1.62%
2018 47.8 -3.82% 47.3 -3.07% 49.3 -3.33%
2017 49.7 - 48.8 - 51 -

The median age of the 21104 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 21104 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 9 170 +98.15% 195 +60.41% 398 308
10 to 19 373 +9.73% 265 +50.4% 377 420
20 to 29 261 +27.75% 205 +46.76% 337 316
30 to 39 94 +79.86% 139 +36.94% 189 195
40 to 49 359 +29.09% 350 +30.27% 469 462
50 to 59 495 +19.67% 520 -0.17% 596 517
60 to 69 336 +21.17% 334 +38.84% 406 473
70+ 302 1.23% 379 +23.21% 295 454

Median Household Income

The latest median household income for the 21104 zip code is $180,789.00.

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 21104.

  • Under 25
    $0.00
  • 25 to 44
    $250,001.00
  • 45 to 64
    $211,389.00
  • 65 and over
    $111,771.00

Average Household Income

Whenever we ask what is the average household income in the 21104 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 21104, 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 21104 is currently $193,513.00.

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.

43.15% of households in 21104 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 21104 against other zip codes.

  • Less than $24,999
    5.22%
  • $25,000 to $49,999
    6.55%
  • $50,000 to $74,999
    6.21%
  • $75,000 to $99,999
    6.60%
  • $100,000 to $149,999
    17.14%
  • $150,000 to $199,999
    15.12%
  • $200,000 or more
    43.15%

Per Capita Income

The per capita income in 21104 is $64,395.00.

Per capita income is the average income of a person in a given area. It is calculated by dividing the total income of 21104 by the total population of 21104.

This is different from the average or mean income because it includes and accounts for all people living in the 21104 area, including people like children, the elderly, unemployed people, retired people, and more.

Education Levels

We can also look at the education levels in 21104 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
    21.96%
  • Bachelor's degree
    46.17%
  • Some college or associate's degree
    10.19%
  • High school diploma or equivalent
    21.68%
  • Less than high school diploma
    0.00%

Employment

Employment rates are all based around the total population in 21104 that are over the age of 16.

Currently, the total population of the 21104 zip over the age of 16 is 4,953.

Of those people, a total of 65.90% 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 21104 is 64.30%.

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 21104 zip code.

Age Population Participation Unemployment Rate
16 to 19 years 244 43.40% 16.00%
20 to 24 years 470 69.80% 4.00%
25 to 29 years 183 78.10% 25.20%
30 to 34 years 129 100.00% 0.00%
35 to 44 years 737 78.70% 0.00%
45 to 54 years 882 94.40% 0.00%
55 to 59 years 680 80.70% 1.50%
60 to 64 years 465 67.30% 0.00%
65 to 74 years 726 38.20% 0.00%
75 years and over 437 1.80% 0.00%

Employment by Race

Another very interesting employment statistic we can look at is the employment and unemployment rates by race in 21104. 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 3,882 64.40% 3.00%
Black or African American 183 76.00% 0.00%
American Indian and Alaska Native 0 0.00% 0.00%
Asian 643 69.50% 0.00%
Native Hawaiian and Other Pacific Islander 0 0.00% 0.00%
Other 32 65.60% 0.00%
Two or more races 213 74.60% 0.00%
Hispanic or Latino 155 36.10% 0.00%
Not Hispanic or Latino 3,752 65.50% 3.00%

Occupations

In this section we can look at the most common occupations for people living in the 21104 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 21104 is 3,186, with median earnings of $89,115.00.

Women in 21104 are earning approximately 71.80% of the men's earnings.

Population Earnings
Total 3,186 $89,115.00
Male 1,705 $105,694.00
Female 1,481 $75,938.00

Occupations by Category

In the table below, we can break down the population and earnings for 21104 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 568 $129,932.00
Business and Financial 378 $130,000.00
Computer and Mathematical 264 $135,192.00
Architecture and Engineering 143 $133,365.00
Life, Physical, and Social Science 88 $126,667.00
Community and Social Service 26 $0.00
Legal 14 $0.00
Educational and Library 170 $12,333.00
Arts, Design, Entertainment, Sports, and Media 47 $22,386.00
Healthcare Practitioners 422 $113,192.00
Healthcare Support 65 $22,132.00
Firefighters and Protective Service 26 $0.00
Law Enforcement 0 $0.00
Food Preparation and Serving 99 $6,603.00
Building and Grounds Cleaning 27 $32,981.00
Personal Care and Service 108 $11,071.00
Sales 184 $60,000.00
Office and Administrative Support 256 $45,682.00
Farming, Fishing, and Forestry 0 $0.00
Construction and Extraction 68 $48,214.00
Installation, Maintenance, and Repair 108 $52,500.00
Production 17 $0.00
Transportation and Material Moving 55 $35,568.00

Occupations by Gender

Now we can also look at the occupations by category for 21104 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 21104.

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 350 $170,385.00 218 $119,000.00
Business and Financial 251 $136,250.00 127 $128,583.00
Computer and Mathematical 232 $143,333.00 32 $98,654.00
Architecture and Engineering 127 $111,827.00 16 $0.00
Life, Physical, and Social Science 79 $22,469.00 9 $0.00
Community and Social Service 10 $0.00 16 $0.00
Legal 14 $0.00 0 $0.00
Educational and Library 26 $4,615.00 144 $12,500.00
Arts, Design, Entertainment, Sports, and Media 23 $0.00 24 $0.00
Healthcare Practitioners 47 $0.00 375 $113,673.00
Healthcare Support 17 $0.00 48 $26,071.00
Firefighters and Protective Service 13 $0.00 13 $0.00
Law Enforcement 0 $0.00 0 $0.00
Food Preparation and Serving 34 $4,318.00 65 $0.00
Building and Grounds Cleaning 27 $32,981.00 0 $0.00
Personal Care and Service 27 $0.00 81 $9,148.00
Sales 99 $78,015.00 85 $51,917.00
Office and Administrative Support 55 $12,292.00 201 $51,544.00
Farming, Fishing, and Forestry 0 $0.00 0 $0.00
Construction and Extraction 68 $48,214.00 0 $0.00
Installation, Maintenance, and Repair 108 $52,500.00 0 $0.00
Production 0 $0.00 17 $0.00
Transportation and Material Moving 45 $36,705.00 10 $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 2,030 households in 21104, with an average household size of 3.05 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 1,650 families living in the 21104 zip code with an average family size of 3.34 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 21104:

Married Male Female Nonfamily
Total Households 1,475 54 121 380
Average Household Size 3.38 3.81 3.93 1.37
Total Families 1,475 54 121 0
Average Household Size 3.32 3.2 3.62 0

Poverty

Of the 1,650 families living in 21104, 0.80% are considered to be below the poverty threshold.

The table below shows the latest poverty thresholds in 21104:

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 2,046 housing units in 21104.

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

Total Percentage
Occupied 2,030 99.22%
Vacant 16 0.78%

1.12% of the total 2,046 housing units in 21104 are rental units. This is approximately 23 properties.

For owner-occupied housing units, a total of 1,919 are occupied by the owner - or 93.79% of the total.

Rental Rates

The median rent for a property in 21104 is $0.00.

In the chart below, we can look at the number of rental properties in 21104 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
    88
  • Less than $500
    0
  • $500 to $999
    10
  • $1,000 to $1,499
    0
  • $1,500 to $1,999
    0
  • $2,000 to $2,499
    0
  • $2,500 to $2,999
    13
  • $3,000 or more
    0

Property Value

The median value of a property in 21104 is $581,900.00.

Just like with rental rates, we can look at the number of properties in 21104 that fall into a particular value range.

  • Less than $50,000
    22
  • $50,000 to $99,999
    19
  • $100,000 to $149,999
    10
  • $150,000 to $199,999
    0
  • $200,000 to $299,999
    38
  • $300,000 to $499,999
    576
  • $500,000 to $999,999
    1,187
  • $1,000,000 or more
    67

Property Age

We can also look at the age of properties in 21104. The chart below shows the number of properties in 21104 that fall into a particular age range.

  • 1939 or earlier
    41
  • 1940 to 1949
    7
  • 1950 to 1959
    53
  • 1960 to 1969
    70
  • 1970 to 1979
    266
  • 1980 to 1989
    350
  • 1990 to 1999
    479
  • 2000 to 2009
    331
  • 2010 to 2013
    429
  • 2014 or later
    20

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 21104 that have a particular number of vehicles available.

  • No vehicles available
    14
  • 1 vehicle available
    240
  • 2 vehicles available
    808
  • 3 or more vehicles available
    968

Commuting to Work

In this section, we can also look at how people in 21104 get to work. The chart below shows the number of people in 21104 that commute to work in a particular way.

32.8 minutes is the average travel time to work for people in 21104.

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
    10
  • 5 to 9 minutes
    194
  • 10 to 14 minutes
    258
  • 15 to 19 minutes
    213
  • 20 to 24 minutes
    218
  • 25 to 29 minutes
    284
  • 30 to 34 minutes
    374
  • 35 to 39 minutes
    247
  • 40 to 44 minutes
    225
  • 45 to 59 minutes
    368
  • 60 to 89 minutes
    177
  • 90 or more minutes
    98

Summary

We've covered a LOT of demographic and population data for 21104 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 21104

If you want to see how the population and demographics of 21104 compare to other zip codes in Maryland, check out the list of all Maryland zip codes below: