21204 Zip Code Population and Demographics

In this article, we'll explore the population statistics for the zip code 21204, including popular demographics data like median age, number of households, household income, gender, employment and unemployment rates, occupations, religion, and more.

21204 is a zip code in Baltimore County, Maryland, which covers District 8 and District 9, with a total population of 21,378 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 21204 zip code. The most basic data is the total population, which is the total number of people living in 21204.

The estimated population of people living in 21204 is 21,378, with a median age of 33.9.

We can look back at data from previous years to see how the population in the 21204 area has changed over the last 5 years.

Year Population Change 5-Year Change
2021
21,378
-0.65% +0.39%
2020
21,518
-0.13% -
2019
21,545
-0.38% -
2018
21,628
+1.56%
-
2017
21,295
- -

Population of 21204 by Race and Ethnicity

How much has the race and ethnicity of the population in the 21204 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
68.9%
77.5%
-11.10%
Black/African American
17.7%
12.2%
+45.08%
Native
0.3%
0.4%
-25.00%
Hispanic
3.5%
3.7%
-5.41%
Asian
5.9%
4%
+47.50%
Hawaiian/Pacific Islander
0%
0%
0.00%
Two Or More Races
3.4%
1.6%
+112.50%
Other
0.3%
0.7%
-57.14%

This data can be very important for anybody studying the 21204 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 21204 by Age and Gender

We can also monitor the change of the age and gender in the 21204 zip code to track track trends in the population over time.

We can see how the population in 21204 has changed over the last 5 years by median age as a total, and also by male and female.

Year Total Male Female
2021 33.9 +8.31% 32.9 +10.4% 35.3 +7.95%
2020 31.3 -3.99% 29.8 -8.31% 32.7 -0.3%
2019 32.6 -1.81% 32.5 -0.91% 32.8 -4.37%
2018 33.2 -5.41% 32.8 -6.82% 34.3 -2%
2017 35.1 - 35.2 - 35 -

The median age of the 21204 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 21204 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 9 719 +4.85% 801 +5.8% 749 836
10 to 19 1,264 +4.25% 1,726 -7.95% 1,271 1,562
20 to 29 2,601 +3.47% 2,663 -0.15% 2,680 2,645
30 to 39 1,062 0.63% 749 +36.25% 1,042 1,038
40 to 49 1,335 -12.04% 1,283 -43.5% 1,170 805
50 to 59 968 -14.68% 1,068 +14.58% 824 1,229
60 to 69 1,263 -6.08% 1,213 +14.48% 1,176 1,394
70+ 997 +6.53% 1,583 +19.74% 1,052 1,905

Median Household Income

The latest median household income for the 21204 zip code is $90,032.00.

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 21204.

  • Under 25
    $18,222.00
  • 25 to 44
    $113,713.00
  • 45 to 64
    $151,815.00
  • 65 and over
    $71,156.00

Average Household Income

Whenever we ask what is the average household income in the 21204 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 21204, 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 21204 is currently $133,437.00.

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.

17.46% of households in 21204 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 21204 against other zip codes.

  • Less than $24,999
    14.40%
  • $25,000 to $49,999
    13.07%
  • $50,000 to $74,999
    17.03%
  • $75,000 to $99,999
    9.98%
  • $100,000 to $149,999
    17.72%
  • $150,000 to $199,999
    10.34%
  • $200,000 or more
    17.46%

Per Capita Income

The per capita income in 21204 is $53,781.00.

Per capita income is the average income of a person in a given area. It is calculated by dividing the total income of 21204 by the total population of 21204.

This is different from the average or mean income because it includes and accounts for all people living in the 21204 area, including people like children, the elderly, unemployed people, retired people, and more.

Education Levels

We can also look at the education levels in 21204 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
    32.23%
  • Bachelor's degree
    45.98%
  • Some college or associate's degree
    5.37%
  • High school diploma or equivalent
    15.55%
  • Less than high school diploma
    0.87%

Employment

Employment rates are all based around the total population in 21204 that are over the age of 16.

Currently, the total population of the 21204 zip over the age of 16 is 18,530.

Of those people, a total of 56.80% 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 21204 is 55.10%.

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 21204 zip code.

Age Population Participation Unemployment Rate
16 to 19 years 1,570 25.50% 5.80%
20 to 24 years 3,422 54.00% 4.30%
25 to 29 years 1,903 78.00% 3.60%
30 to 34 years 1,213 69.40% 0.00%
35 to 44 years 1,858 80.90% 1.20%
45 to 54 years 1,918 81.20% 5.10%
55 to 59 years 1,119 81.10% 0.90%
60 to 64 years 1,178 70.50% 0.00%
65 to 74 years 2,346 42.80% 2.30%
75 years and over 2,003 7.50% 0.00%

Employment by Race

Another very interesting employment statistic we can look at is the employment and unemployment rates by race in 21204. 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 13,299 55.30% 2.80%
Black or African American 3,407 53.60% 1.80%
American Indian and Alaska Native 72 100.00% 0.00%
Asian 1,085 70.70% 3.90%
Native Hawaiian and Other Pacific Islander 3 100.00% 100.00%
Other 77 74.00% 0.00%
Two or more races 587 75.10% 3.20%
Hispanic or Latino 557 65.40% 0.00%
Not Hispanic or Latino 13,048 55.60% 2.80%

Occupations

In this section we can look at the most common occupations for people living in the 21204 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 21204 is 10,215, with median earnings of $56,366.00.

Women in 21204 are earning approximately 55.20% of the men's earnings.

Population Earnings
Total 10,215 $56,366.00
Male 4,795 $78,172.00
Female 5,420 $43,163.00

Occupations by Category

In the table below, we can break down the population and earnings for 21204 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 1,265 $104,750.00
Business and Financial 798 $64,324.00
Computer and Mathematical 523 $100,421.00
Architecture and Engineering 275 $64,459.00
Life, Physical, and Social Science 178 $50,700.00
Community and Social Service 273 $31,932.00
Legal 301 $102,371.00
Educational and Library 1,091 $57,750.00
Arts, Design, Entertainment, Sports, and Media 569 $65,855.00
Healthcare Practitioners 985 $65,813.00
Healthcare Support 236 $16,979.00
Firefighters and Protective Service 62 $56,905.00
Law Enforcement 15 $0.00
Food Preparation and Serving 489 $6,700.00
Building and Grounds Cleaning 139 $33,025.00
Personal Care and Service 377 $11,425.00
Sales 1,094 $42,500.00
Office and Administrative Support 974 $38,205.00
Farming, Fishing, and Forestry 0 $0.00
Construction and Extraction 114 $25,750.00
Installation, Maintenance, and Repair 87 $0.00
Production 133 $35,917.00
Transportation and Material Moving 158 $51,250.00

Occupations by Gender

Now we can also look at the occupations by category for 21204 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 21204.

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 721 $142,165.00 544 $87,857.00
Business and Financial 506 $75,114.00 292 $50,857.00
Computer and Mathematical 348 $101,034.00 175 $90,625.00
Architecture and Engineering 160 $74,083.00 115 $63,750.00
Life, Physical, and Social Science 106 $51,100.00 72 $46,591.00
Community and Social Service 59 $27,171.00 214 $39,028.00
Legal 175 $105,583.00 126 $99,038.00
Educational and Library 364 $81,500.00 727 $49,861.00
Arts, Design, Entertainment, Sports, and Media 308 $69,151.00 261 $34,209.00
Healthcare Practitioners 349 $189,345.00 636 $43,491.00
Healthcare Support 33 $20,972.00 203 $16,797.00
Firefighters and Protective Service 37 $101,705.00 25 $0.00
Law Enforcement 15 $0.00 0 $0.00
Food Preparation and Serving 178 $9,219.00 311 $6,324.00
Building and Grounds Cleaning 133 $32,875.00 6 $0.00
Personal Care and Service 133 $85,275.00 244 $7,250.00
Sales 487 $48,466.00 607 $38,365.00
Office and Administrative Support 181 $63,750.00 793 $33,438.00
Farming, Fishing, and Forestry 0 $0.00 0 $0.00
Construction and Extraction 114 $25,750.00 0 $0.00
Installation, Maintenance, and Repair 87 $0.00 0 $0.00
Production 111 $35,750.00 22 $0.00
Transportation and Material Moving 119 $51,375.00 39 $39,875.00

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 8,363 households in 21204, with an average household size of 2.17 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 4,052 families living in the 21204 zip code with an average family size of 2.93 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 21204:

Married Male Female Nonfamily
Total Households 3,200 261 591 4,311
Average Household Size 3.06 2.53 2.84 1.4
Total Families 3,200 261 591 0
Average Household Size 3.05 2.35 2.57 0

Poverty

Of the 4,052 families living in 21204, 4.50% are considered to be below the poverty threshold.

The table below shows the latest poverty thresholds in 21204:

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 9,277 housing units in 21204.

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

Total Percentage
Occupied 8,363 90.15%
Vacant 914 9.85%

43.52% of the total 9,277 housing units in 21204 are rental units. This is approximately 4,037 properties.

For owner-occupied housing units, a total of 4,258 are occupied by the owner - or 45.90% of the total.

Rental Rates

The median rent for a property in 21204 is $1,712.00.

In the chart below, we can look at the number of rental properties in 21204 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
    68
  • Less than $500
    16
  • $500 to $999
    254
  • $1,000 to $1,499
    1,085
  • $1,500 to $1,999
    1,567
  • $2,000 to $2,499
    886
  • $2,500 to $2,999
    102
  • $3,000 or more
    127

Property Value

The median value of a property in 21204 is $449,300.00.

Just like with rental rates, we can look at the number of properties in 21204 that fall into a particular value range.

  • Less than $50,000
    53
  • $50,000 to $99,999
    11
  • $100,000 to $149,999
    66
  • $150,000 to $199,999
    228
  • $200,000 to $299,999
    645
  • $300,000 to $499,999
    1,513
  • $500,000 to $999,999
    1,364
  • $1,000,000 or more
    378

Property Age

We can also look at the age of properties in 21204. The chart below shows the number of properties in 21204 that fall into a particular age range.

  • 1939 or earlier
    723
  • 1940 to 1949
    376
  • 1950 to 1959
    1,639
  • 1960 to 1969
    1,492
  • 1970 to 1979
    1,148
  • 1980 to 1989
    1,123
  • 1990 to 1999
    1,001
  • 2000 to 2009
    911
  • 2010 to 2013
    864
  • 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 21204 that have a particular number of vehicles available.

  • No vehicles available
    401
  • 1 vehicle available
    3,568
  • 2 vehicles available
    3,212
  • 3 or more vehicles available
    1,182

Commuting to Work

In this section, we can also look at how people in 21204 get to work. The chart below shows the number of people in 21204 that commute to work in a particular way.

26.1 minutes is the average travel time to work for people in 21204.

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
    165
  • 5 to 9 minutes
    830
  • 10 to 14 minutes
    1,155
  • 15 to 19 minutes
    1,751
  • 20 to 24 minutes
    1,095
  • 25 to 29 minutes
    696
  • 30 to 34 minutes
    1,148
  • 35 to 39 minutes
    460
  • 40 to 44 minutes
    262
  • 45 to 59 minutes
    384
  • 60 to 89 minutes
    466
  • 90 or more minutes
    303

Summary

We've covered a LOT of demographic and population data for 21204 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 21204

If you want to see how the population and demographics of 21204 compare to other zip codes in Maryland, check out the list of all Maryland zip codes below: