94521 Zip Code Population and Demographics

In this article, we'll explore the population statistics for the zip code 94521, including popular demographics data like median age, number of households, household income, gender, employment and unemployment rates, occupations, religion, and more.

94521 is a zip code in Contra Costa County, California, which covers Antioch-Pittsburg CCD, Central Contra Costa CCD, and Tassajara, with a total population of 42,388 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 94521 zip code. The most basic data is the total population, which is the total number of people living in 94521.

The estimated population of people living in 94521 is 42,388, with a median age of 42.2.

We can look back at data from previous years to see how the population in the 94521 area has changed over the last 5 years.

Year Population Change 5-Year Change
2021
42,388
 -1.17% -3.33%
2020
42,891
 -0.9% -
2019
43,281
+0.41%
-
2018
43,103
 -1.7% -
2017
43,850
 - -

Population of 94521 by Race and Ethnicity

How much has the race and ethnicity of the population in the 94521 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
57.4%
63.2%
 -9.18%
Black/African American
3.8%
3.1%
 +22.58%
Native
0.2%
0.4%
 -50.00%
Hispanic
16.4%
16.7%
 -1.80%
Asian
14.8%
12%
 +23.33%
Hawaiian/Pacific Islander
0%
0.3%
 -100.00%
Two Or More Races
6.9%
3.7%
 +86.49%
Other
0.5%
0.5%
 0.00%

This data can be very important for anybody studying the 94521 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 94521 by Age and Gender

We can also monitor the change of the age and gender in the 94521 zip code to track track trends in the population over time.

We can see how the population in 94521 has changed over the last 5 years by median age as a total, and also by male and female.

Year Total Male Female
2021 42.2 +2.68% 40.2 +1.26% 43.8 +3.79%
2020 41.1 -2.84% 39.7 -2.22% 42.2 -2.99%
2019 42.3 0% 40.6 +0.5% 43.5 -0.46%
2018 42.3 +3.93% 40.4 +2.02% 43.7 +4.8%
2017 40.7 - 39.6 - 41.7 -

The median age of the 94521 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 94521 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 2,787 0.77% 2,772 -22.76% 2,777 2,161
10 to 19 2,243 -4.8% 2,799 -18.59% 2,126 2,293
20 to 29 2,598 -12.69% 2,371 -0.11% 2,263 2,362
30 to 39 3,014 +5.64% 2,880 +3.99% 3,170 2,984
40 to 49 2,598 -5.85% 3,200 -7.68% 2,447 2,934
50 to 59 3,318 -4.07% 3,433 -17.22% 3,184 2,872
60 to 69 2,174 +17.53% 2,668 +18.42% 2,555 3,175
70+ 2,220 -0.23% 2,775 +5.57% 2,193 2,892

Median Household Income

The latest median household income for the 94521 zip code is $112,030.00.

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 94521.

  • Under 25
    $0.00
  • 25 to 44
    $120,118.00
  • 45 to 64
    $130,714.00
  • 65 and over
    $84,375.00

Average Household Income

Whenever we ask what is the average household income in the 94521 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 94521, 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 94521 is currently $129,887.00.

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.

18.50% of households in 94521 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 94521 against other zip codes.

  • Less than $24,999
    9.33%
  • $25,000 to $49,999
    10.18%
  • $50,000 to $74,999
    10.91%
  • $75,000 to $99,999
    11.20%
  • $100,000 to $149,999
    24.84%
  • $150,000 to $199,999
    15.03%
  • $200,000 or more
    18.50%

Per Capita Income

The per capita income in 94521 is $48,979.00.

Per capita income is the average income of a person in a given area. It is calculated by dividing the total income of 94521 by the total population of 94521.

This is different from the average or mean income because it includes and accounts for all people living in the 94521 area, including people like children, the elderly, unemployed people, retired people, and more.

Education Levels

We can also look at the education levels in 94521 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
    15.70%
  • Bachelor's degree
    44.44%
  • Some college or associate's degree
    11.64%
  • High school diploma or equivalent
    26.08%
  • Less than high school diploma
    2.13%

Employment

Employment rates are all based around the total population in 94521 that are over the age of 16.

Currently, the total population of the 94521 zip over the age of 16 is 34,714.

Of those people, a total of 65.30% 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 94521 is 61.80%.

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 94521 zip code.

Age Population Participation Unemployment Rate
16 to 19 years 1,683 42.20% 12.50%
20 to 24 years 2,125 75.80% 13.90%
25 to 29 years 2,500 82.30% 5.00%
30 to 34 years 3,035 82.50% 5.60%
35 to 44 years 5,826 85.80% 5.90%
45 to 54 years 5,685 84.20% 2.50%
55 to 59 years 3,045 80.30% 4.10%
60 to 64 years 2,993 62.90% 5.50%
65 to 74 years 4,813 31.70% 2.00%
75 years and over 3,009 4.70% 10.00%

Employment by Race

Another very interesting employment statistic we can look at is the employment and unemployment rates by race in 94521. 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 23,566 65.40% 5.10%
Black or African American 1,254 68.50% 11.40%
American Indian and Alaska Native 189 51.30% 0.00%
Asian 5,164 64.90% 4.80%
Native Hawaiian and Other Pacific Islander 2 100.00% 0.00%
Other 1,565 55.50% 0.90%
Two or more races 2,974 69.80% 7.60%
Hispanic or Latino 5,381 61.80% 4.90%
Not Hispanic or Latino 21,184 65.20% 4.90%

Occupations

In this section we can look at the most common occupations for people living in the 94521 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 94521 is 21,448, with median earnings of $61,031.00.

Women in 94521 are earning approximately 71.80% of the men's earnings.

Population Earnings
Total 21,448 $61,031.00
Male 11,031 $70,198.00
Female 10,417 $50,394.00

Occupations by Category

In the table below, we can break down the population and earnings for 94521 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 3,438 $105,940.00
Business and Financial 1,636 $78,553.00
Computer and Mathematical 860 $122,704.00
Architecture and Engineering 587 $94,081.00
Life, Physical, and Social Science 270 $75,217.00
Community and Social Service 357 $34,617.00
Legal 169 $130,521.00
Educational and Library 1,445 $52,708.00
Arts, Design, Entertainment, Sports, and Media 304 $47,244.00
Healthcare Practitioners 1,314 $102,392.00
Healthcare Support 797 $38,576.00
Firefighters and Protective Service 229 $62,773.00
Law Enforcement 159 $119,063.00
Food Preparation and Serving 873 $20,165.00
Building and Grounds Cleaning 387 $19,280.00
Personal Care and Service 546 $13,500.00
Sales 2,487 $27,369.00
Office and Administrative Support 2,423 $46,641.00
Farming, Fishing, and Forestry 2 $0.00
Construction and Extraction 803 $52,872.00
Installation, Maintenance, and Repair 723 $58,544.00
Production 728 $73,400.00
Transportation and Material Moving 566 $34,519.00

Occupations by Gender

Now we can also look at the occupations by category for 94521 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 94521.

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 2,183 $107,071.00 1,255 $101,920.00
Business and Financial 902 $78,393.00 734 $79,000.00
Computer and Mathematical 702 $124,337.00 158 $117,647.00
Architecture and Engineering 494 $93,841.00 93 $94,315.00
Life, Physical, and Social Science 163 $66,094.00 107 $136,094.00
Community and Social Service 139 $74,219.00 218 $34,200.00
Legal 91 $163,359.00 78 $89,113.00
Educational and Library 210 $64,531.00 1,235 $49,954.00
Arts, Design, Entertainment, Sports, and Media 160 $67,969.00 144 $14,464.00
Healthcare Practitioners 224 $69,583.00 1,090 $106,486.00
Healthcare Support 187 $29,197.00 610 $42,567.00
Firefighters and Protective Service 175 $63,867.00 54 $11,042.00
Law Enforcement 127 $130,446.00 32 $0.00
Food Preparation and Serving 371 $25,989.00 502 $13,993.00
Building and Grounds Cleaning 300 $18,864.00 87 $21,146.00
Personal Care and Service 93 $41,655.00 453 $11,835.00
Sales 1,124 $41,121.00 1,363 $24,048.00
Office and Administrative Support 555 $60,417.00 1,868 $43,966.00
Farming, Fishing, and Forestry 2 $0.00 0 $0.00
Construction and Extraction 803 $52,872.00 0 $0.00
Installation, Maintenance, and Repair 671 $58,809.00 52 $0.00
Production 617 $75,875.00 111 $52,031.00
Transportation and Material Moving 413 $40,764.00 153 $23,750.00

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 15,676 households in 94521, with an average household size of 2.69 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 11,028 families living in the 94521 zip code with an average family size of 3.23 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 94521:

Married Male Female Nonfamily
Total Households 8,810 616 1,602 4,648
Average Household Size 3.31 3.12 3.34 1.23
Total Families 8,810 616 1,602 0
Average Household Size 3.26 2.87 3.2 0

Poverty

Of the 11,028 families living in 94521, 3.90% are considered to be below the poverty threshold.

The table below shows the latest poverty thresholds in 94521:

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 16,055 housing units in 94521.

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

Total Percentage
Occupied 15,676 97.64%
Vacant 379 2.36%

24.41% of the total 16,055 housing units in 94521 are rental units. This is approximately 3,919 properties.

For owner-occupied housing units, a total of 11,483 are occupied by the owner - or 71.52% of the total.

Rental Rates

The median rent for a property in 94521 is $2,068.00.

In the chart below, we can look at the number of rental properties in 94521 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
    274
  • Less than $500
    96
  • $500 to $999
    300
  • $1,000 to $1,499
    442
  • $1,500 to $1,999
    997
  • $2,000 to $2,499
    911
  • $2,500 to $2,999
    584
  • $3,000 or more
    589

Property Value

The median value of a property in 94521 is $649,100.00.

Just like with rental rates, we can look at the number of properties in 94521 that fall into a particular value range.

  • Less than $50,000
    62
  • $50,000 to $99,999
    100
  • $100,000 to $149,999
    1
  • $150,000 to $199,999
    33
  • $200,000 to $299,999
    347
  • $300,000 to $499,999
    2,380
  • $500,000 to $999,999
    7,675
  • $1,000,000 or more
    885

Property Age

We can also look at the age of properties in 94521. The chart below shows the number of properties in 94521 that fall into a particular age range.

  • 1939 or earlier
    186
  • 1940 to 1949
    329
  • 1950 to 1959
    2,215
  • 1960 to 1969
    3,500
  • 1970 to 1979
    4,859
  • 1980 to 1989
    2,593
  • 1990 to 1999
    1,337
  • 2000 to 2009
    923
  • 2010 to 2013
    113
  • 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 94521 that have a particular number of vehicles available.

  • No vehicles available
    690
  • 1 vehicle available
    4,224
  • 2 vehicles available
    6,169
  • 3 or more vehicles available
    4,593

Commuting to Work

In this section, we can also look at how people in 94521 get to work. The chart below shows the number of people in 94521 that commute to work in a particular way.

34.5 minutes is the average travel time to work for people in 94521.

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
    412
  • 5 to 9 minutes
    1,052
  • 10 to 14 minutes
    1,646
  • 15 to 19 minutes
    2,061
  • 20 to 24 minutes
    2,163
  • 25 to 29 minutes
    945
  • 30 to 34 minutes
    3,019
  • 35 to 39 minutes
    344
  • 40 to 44 minutes
    975
  • 45 to 59 minutes
    1,688
  • 60 to 89 minutes
    2,824
  • 90 or more minutes
    952

Summary

We've covered a LOT of demographic and population data for 94521 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 94521

If you want to see how the population and demographics of 94521 compare to other zip codes in California, check out the list of all California zip codes below: