21784 Zip Code Population and Demographics

In this article, we'll explore the population statistics for the zip code 21784, including popular demographics data like median age, number of households, household income, gender, employment and unemployment rates, occupations, religion, and more.

21784 is a zip code in Carroll County and Howard County, Maryland, which covers District 4, Woolerys, District 5, Freedom, District 9, Franklin, District 14, Berrett, District 3, West Friendship, District 4, and Lisbon, with a total population of 36,809 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 21784 zip code. The most basic data is the total population, which is the total number of people living in 21784.

The estimated population of people living in 21784 is 36,809, with a median age of 41.

We can look back at data from previous years to see how the population in the 21784 area has changed over the last 5 years.

Year Population Change 5-Year Change
2021
36,809
+0.89%
-5.84%
2020
36,484
 -2.36% -
2019
37,365
 -2.67% -
2018
38,390
 -1.79% -
2017
39,091
 - -

Population of 21784 by Race and Ethnicity

How much has the race and ethnicity of the population in the 21784 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
82.9%
89.2%
 -7.06%
Black/African American
5.4%
3.1%
 +74.19%
Native
0.1%
0.3%
 -66.67%
Hispanic
4%
3.3%
 +21.21%
Asian
3.8%
2.3%
 +65.22%
Hawaiian/Pacific Islander
0%
0%
 0.00%
Two Or More Races
3.3%
1.7%
 +94.12%
Other
0.5%
0.1%
 +400.00%

This data can be very important for anybody studying the 21784 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 21784 by Age and Gender

We can also monitor the change of the age and gender in the 21784 zip code to track track trends in the population over time.

We can see how the population in 21784 has changed over the last 5 years by median age as a total, and also by male and female.

Year Total Male Female
2021 41 0% 40 +1.27% 42 -0.94%
2020 41 -2.15% 39.5 -1% 42.4 -3.85%
2019 41.9 -0.71% 39.9 -2.44% 44.1 +1.61%
2018 42.2 -0.71% 40.9 -0.24% 43.4 -0.46%
2017 42.5 - 41 - 43.6 -

The median age of the 21784 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 21784 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 2,245 -6.18% 2,190 +1.06% 2,099 2,210
10 to 19 2,809 -3.21% 2,685 -6.58% 2,700 2,474
20 to 29 2,203 -22.61% 1,828 -14.57% 1,736 1,569
30 to 39 2,135 +20.32% 1,916 +27.6% 2,591 2,500
40 to 49 2,893 -18.31% 3,082 -13.08% 2,381 2,664
50 to 59 3,308 -1.84% 3,248 -17.97% 3,238 2,684
60 to 69 2,030 -3.54% 2,358 -3.57% 1,933 2,265
70+ 1,838 -13.74% 2,323 -6.4% 1,597 2,168

Median Household Income

The latest median household income for the 21784 zip code is $125,497.00.

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 21784.

  • Under 25
    $0.00
  • 25 to 44
    $145,341.00
  • 45 to 64
    $143,813.00
  • 65 and over
    $72,768.00

Average Household Income

Whenever we ask what is the average household income in the 21784 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 21784, 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 21784 is currently $147,459.00.

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.

22.71% of households in 21784 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 21784 against other zip codes.

  • Less than $24,999
    6.44%
  • $25,000 to $49,999
    8.45%
  • $50,000 to $74,999
    9.44%
  • $75,000 to $99,999
    11.68%
  • $100,000 to $149,999
    24.25%
  • $150,000 to $199,999
    17.04%
  • $200,000 or more
    22.71%

Per Capita Income

The per capita income in 21784 is $52,574.00.

Per capita income is the average income of a person in a given area. It is calculated by dividing the total income of 21784 by the total population of 21784.

This is different from the average or mean income because it includes and accounts for all people living in the 21784 area, including people like children, the elderly, unemployed people, retired people, and more.

Education Levels

We can also look at the education levels in 21784 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
    21.40%
  • Bachelor's degree
    42.93%
  • Some college or associate's degree
    10.07%
  • High school diploma or equivalent
    23.69%
  • Less than high school diploma
    1.92%

Employment

Employment rates are all based around the total population in 21784 that are over the age of 16.

Currently, the total population of the 21784 zip over the age of 16 is 29,419.

Of those people, a total of 68.30% 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 21784 is 65.80%.

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 21784 zip code.

Age Population Participation Unemployment Rate
16 to 19 years 2,093 41.70% 8.50%
20 to 24 years 1,837 80.70% 5.90%
25 to 29 years 1,468 87.30% 3.20%
30 to 34 years 2,375 84.30% 2.40%
35 to 44 years 5,325 87.00% 1.80%
45 to 54 years 5,784 88.50% 4.30%
55 to 59 years 2,574 81.60% 1.30%
60 to 64 years 2,569 65.40% 2.00%
65 to 74 years 3,172 24.20% 0.00%
75 years and over 2,222 7.30% 0.00%

Employment by Race

Another very interesting employment statistic we can look at is the employment and unemployment rates by race in 21784. 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 25,251 69.10% 2.60%
Black or African American 1,632 49.10% 2.00%
American Indian and Alaska Native 50 100.00% 0.00%
Asian 1,073 66.20% 0.00%
Native Hawaiian and Other Pacific Islander 22 0.00% 0.00%
Other 199 97.00% 0.00%
Two or more races 1,192 75.40% 15.90%
Hispanic or Latino 1,082 79.40% 4.00%
Not Hispanic or Latino 24,823 68.80% 2.60%

Occupations

In this section we can look at the most common occupations for people living in the 21784 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 21784 is 19,351, with median earnings of $69,023.00.

Women in 21784 are earning approximately 70.90% of the men's earnings.

Population Earnings
Total 19,351 $69,023.00
Male 10,087 $82,137.00
Female 9,264 $58,212.00

Occupations by Category

In the table below, we can break down the population and earnings for 21784 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 3,143 $100,112.00
Business and Financial 1,629 $89,306.00
Computer and Mathematical 1,423 $111,895.00
Architecture and Engineering 697 $123,125.00
Life, Physical, and Social Science 271 $84,750.00
Community and Social Service 160 $48,696.00
Legal 145 $93,250.00
Educational and Library 1,852 $63,046.00
Arts, Design, Entertainment, Sports, and Media 414 $55,652.00
Healthcare Practitioners 1,258 $69,657.00
Healthcare Support 373 $20,268.00
Firefighters and Protective Service 234 $49,200.00
Law Enforcement 317 $103,092.00
Food Preparation and Serving 945 $14,240.00
Building and Grounds Cleaning 298 $23,611.00
Personal Care and Service 471 $15,781.00
Sales 1,652 $55,349.00
Office and Administrative Support 1,807 $44,858.00
Farming, Fishing, and Forestry 39 $2,499.00
Construction and Extraction 721 $59,356.00
Installation, Maintenance, and Repair 568 $56,000.00
Production 522 $56,429.00
Transportation and Material Moving 180 $51,600.00

Occupations by Gender

Now we can also look at the occupations by category for 21784 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 21784.

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 1,729 $106,018.00 1,414 $91,786.00
Business and Financial 707 $90,417.00 922 $88,333.00
Computer and Mathematical 1,083 $124,536.00 340 $93,750.00
Architecture and Engineering 613 $132,589.00 84 $86,471.00
Life, Physical, and Social Science 105 $98,047.00 166 $83,000.00
Community and Social Service 63 $60,924.00 97 $45,125.00
Legal 63 $197,875.00 82 $54,573.00
Educational and Library 473 $86,089.00 1,379 $60,429.00
Arts, Design, Entertainment, Sports, and Media 199 $57,228.00 215 $47,188.00
Healthcare Practitioners 182 $75,643.00 1,076 $68,824.00
Healthcare Support 126 $18,750.00 247 $20,625.00
Firefighters and Protective Service 193 $50,977.00 41 $41,719.00
Law Enforcement 290 $104,079.00 27 $93,295.00
Food Preparation and Serving 591 $14,861.00 354 $13,883.00
Building and Grounds Cleaning 218 $26,042.00 80 $20,833.00
Personal Care and Service 84 $18,750.00 387 $15,260.00
Sales 982 $78,261.00 670 $22,667.00
Office and Administrative Support 428 $62,222.00 1,379 $39,482.00
Farming, Fishing, and Forestry 29 $0.00 10 $0.00
Construction and Extraction 721 $59,356.00 0 $0.00
Installation, Maintenance, and Repair 510 $53,300.00 58 $77,115.00
Production 387 $63,438.00 135 $27,688.00
Transportation and Material Moving 147 $54,375.00 33 $27,125.00

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 13,094 households in 21784, with an average household size of 2.73 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 10,125 families living in the 21784 zip code with an average family size of 3.14 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 21784:

Married Male Female Nonfamily
Total Households 8,779 357 989 2,969
Average Household Size 3.19 2.93 3.13 1.21
Total Families 8,779 357 989 0
Average Household Size 3.18 2.69 3 0

Poverty

Of the 10,125 families living in 21784, 2.10% are considered to be below the poverty threshold.

The table below shows the latest poverty thresholds in 21784:

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 13,548 housing units in 21784.

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

Total Percentage
Occupied 13,094 96.65%
Vacant 454 3.35%

12.00% of the total 13,548 housing units in 21784 are rental units. This is approximately 1,626 properties.

For owner-occupied housing units, a total of 11,317 are occupied by the owner - or 83.53% of the total.

Rental Rates

The median rent for a property in 21784 is $1,494.00.

In the chart below, we can look at the number of rental properties in 21784 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
    151
  • Less than $500
    109
  • $500 to $999
    312
  • $1,000 to $1,499
    398
  • $1,500 to $1,999
    630
  • $2,000 to $2,499
    96
  • $2,500 to $2,999
    60
  • $3,000 or more
    21

Property Value

The median value of a property in 21784 is $404,300.00.

Just like with rental rates, we can look at the number of properties in 21784 that fall into a particular value range.

  • Less than $50,000
    83
  • $50,000 to $99,999
    52
  • $100,000 to $149,999
    79
  • $150,000 to $199,999
    416
  • $200,000 to $299,999
    1,513
  • $300,000 to $499,999
    6,308
  • $500,000 to $999,999
    2,735
  • $1,000,000 or more
    131

Property Age

We can also look at the age of properties in 21784. The chart below shows the number of properties in 21784 that fall into a particular age range.

  • 1939 or earlier
    469
  • 1940 to 1949
    247
  • 1950 to 1959
    511
  • 1960 to 1969
    921
  • 1970 to 1979
    3,315
  • 1980 to 1989
    2,795
  • 1990 to 1999
    2,752
  • 2000 to 2009
    1,712
  • 2010 to 2013
    826
  • 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 21784 that have a particular number of vehicles available.

  • No vehicles available
    301
  • 1 vehicle available
    2,394
  • 2 vehicles available
    5,675
  • 3 or more vehicles available
    4,724

Commuting to Work

In this section, we can also look at how people in 21784 get to work. The chart below shows the number of people in 21784 that commute to work in a particular way.

36.5 minutes is the average travel time to work for people in 21784.

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
    294
  • 5 to 9 minutes
    1,200
  • 10 to 14 minutes
    1,251
  • 15 to 19 minutes
    1,207
  • 20 to 24 minutes
    1,216
  • 25 to 29 minutes
    654
  • 30 to 34 minutes
    1,981
  • 35 to 39 minutes
    990
  • 40 to 44 minutes
    1,614
  • 45 to 59 minutes
    3,431
  • 60 to 89 minutes
    1,821
  • 90 or more minutes
    721

Summary

We've covered a LOT of demographic and population data for 21784 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 21784

If you want to see how the population and demographics of 21784 compare to other zip codes in Maryland, check out the list of all Maryland zip codes below: