02139 Zip Code Population and Demographics

In this article, we'll explore the population statistics for the zip code 02139, including popular demographics data like median age, number of households, household income, gender, employment and unemployment rates, occupations, religion, and more.

02139 is a zip code in Middlesex County, Massachusetts, which covers Cambridge, with a total population of 39,707 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 02139 zip code. The most basic data is the total population, which is the total number of people living in 02139.

The estimated population of people living in 02139 is 39,707, with a median age of 29.9.

We can look back at data from previous years to see how the population in the 02139 area has changed over the last 5 years.

Year Population Change 5-Year Change
2021
39,707
+0.01%
+7.38%
2020
39,702
+2.55%
-
2019
38,715
+1.16%
-
2018
38,272
+3.5%
-
2017
36,979
 - -

Population of 02139 by Race and Ethnicity

How much has the race and ethnicity of the population in the 02139 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
54.1%
61.1%
 -11.46%
Black/African American
13.1%
10.5%
 +24.76%
Native
0%
0.3%
 -100.00%
Hispanic
8.9%
8.6%
 +3.49%
Asian
17.8%
15.2%
 +17.11%
Hawaiian/Pacific Islander
0.3%
0%
 0.00%
Two Or More Races
4.9%
3.9%
 +25.64%
Other
1%
0.5%
 +100.00%

This data can be very important for anybody studying the 02139 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 02139 by Age and Gender

We can also monitor the change of the age and gender in the 02139 zip code to track track trends in the population over time.

We can see how the population in 02139 has changed over the last 5 years by median age as a total, and also by male and female.

Year Total Male Female
2021 29.9 0% 29.7 +0.34% 30.1 -0.99%
2020 29.9 +0.67% 29.6 +0.68% 30.4 +1.33%
2019 29.7 0% 29.4 +0.34% 30 0%
2018 29.7 0% 29.3 -0.34% 30 0%
2017 29.7 - 29.4 - 30 -

The median age of the 02139 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 02139 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 1,468 +14.64% 1,210 +11.17% 1,679 1,348
10 to 19 1,793 +18.98% 2,020 +1.36% 2,146 2,037
20 to 29 6,517 +0.65% 5,915 +5.46% 6,550 6,233
30 to 39 3,846 +8.55% 3,418 +8.74% 4,172 3,714
40 to 49 1,589 +19.41% 1,638 -3.23% 1,920 1,566
50 to 59 1,248 +18.7% 1,550 -15.42% 1,490 1,311
60 to 69 1,071 +22.95% 1,336 +20.38% 1,327 1,621
70+ 1,185 -6.47% 1,175 +25.88% 1,093 1,500

Median Household Income

The latest median household income for the 02139 zip code is $113,374.00.

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 02139.

  • Under 25
    $87,679.00
  • 25 to 44
    $129,259.00
  • 45 to 64
    $119,750.00
  • 65 and over
    $63,947.00

Average Household Income

Whenever we ask what is the average household income in the 02139 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 02139, 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 02139 is currently $152,692.00.

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.

24.14% of households in 02139 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 02139 against other zip codes.

  • Less than $24,999
    13.94%
  • $25,000 to $49,999
    10.42%
  • $50,000 to $74,999
    10.45%
  • $75,000 to $99,999
    10.13%
  • $100,000 to $149,999
    18.21%
  • $150,000 to $199,999
    12.71%
  • $200,000 or more
    24.14%

Per Capita Income

The per capita income in 02139 is $61,811.00.

Per capita income is the average income of a person in a given area. It is calculated by dividing the total income of 02139 by the total population of 02139.

This is different from the average or mean income because it includes and accounts for all people living in the 02139 area, including people like children, the elderly, unemployed people, retired people, and more.

Education Levels

We can also look at the education levels in 02139 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
    39.16%
  • Bachelor's degree
    47.23%
  • Some college or associate's degree
    3.04%
  • High school diploma or equivalent
    9.31%
  • Less than high school diploma
    1.26%

Employment

Employment rates are all based around the total population in 02139 that are over the age of 16.

Currently, the total population of the 02139 zip over the age of 16 is 35,350.

Of those people, a total of 71.90% 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 02139 is 68.70%.

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 02139 zip code.

Age Population Participation Unemployment Rate
16 to 19 years 2,853 36.00% 18.60%
20 to 24 years 5,582 69.20% 4.80%
25 to 29 years 7,201 82.80% 2.50%
30 to 34 years 4,749 89.70% 1.40%
35 to 44 years 5,041 91.20% 4.90%
45 to 54 years 3,103 88.30% 4.40%
55 to 59 years 1,280 62.90% 9.30%
60 to 64 years 1,568 52.80% 5.90%
65 to 74 years 2,233 48.70% 4.00%
75 years and over 1,740 14.00% 0.00%

Employment by Race

Another very interesting employment statistic we can look at is the employment and unemployment rates by race in 02139. 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 21,294 73.80% 2.80%
Black or African American 4,379 62.80% 14.10%
American Indian and Alaska Native 24 70.80% 0.00%
Asian 6,494 75.60% 2.70%
Native Hawaiian and Other Pacific Islander 90 74.40% 20.90%
Other 595 55.50% 18.50%
Two or more races 2,474 65.70% 4.10%
Hispanic or Latino 3,048 66.30% 7.40%
Not Hispanic or Latino 19,845 73.70% 2.50%

Occupations

In this section we can look at the most common occupations for people living in the 02139 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 02139 is 24,294, with median earnings of $59,749.00.

Women in 02139 are earning approximately 86.60% of the men's earnings.

Population Earnings
Total 24,294 $59,749.00
Male 12,574 $64,663.00
Female 11,720 $55,976.00

Occupations by Category

In the table below, we can break down the population and earnings for 02139 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 2,837 $97,773.00
Business and Financial 1,971 $84,761.00
Computer and Mathematical 2,534 $103,375.00
Architecture and Engineering 788 $79,528.00
Life, Physical, and Social Science 3,246 $64,216.00
Community and Social Service 463 $40,509.00
Legal 698 $129,444.00
Educational and Library 4,425 $40,671.00
Arts, Design, Entertainment, Sports, and Media 852 $38,906.00
Healthcare Practitioners 1,510 $76,389.00
Healthcare Support 320 $29,830.00
Firefighters and Protective Service 92 $17,143.00
Law Enforcement 11 $0.00
Food Preparation and Serving 530 $13,056.00
Building and Grounds Cleaning 200 $29,091.00
Personal Care and Service 456 $11,279.00
Sales 964 $33,735.00
Office and Administrative Support 1,423 $28,884.00
Farming, Fishing, and Forestry 18 $0.00
Construction and Extraction 145 $33,413.00
Installation, Maintenance, and Repair 191 $12,132.00
Production 204 $61,042.00
Transportation and Material Moving 318 $35,341.00

Occupations by Gender

Now we can also look at the occupations by category for 02139 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 02139.

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 1,426 $105,372.00 1,411 $85,708.00
Business and Financial 856 $98,352.00 1,115 $72,649.00
Computer and Mathematical 1,855 $111,696.00 679 $82,772.00
Architecture and Engineering 577 $91,908.00 211 $73,594.00
Life, Physical, and Social Science 1,943 $60,991.00 1,303 $72,198.00
Community and Social Service 124 $22,000.00 339 $44,205.00
Legal 349 $207,865.00 349 $83,750.00
Educational and Library 2,253 $41,402.00 2,172 $40,087.00
Arts, Design, Entertainment, Sports, and Media 332 $50,197.00 520 $35,455.00
Healthcare Practitioners 462 $74,821.00 1,048 $76,944.00
Healthcare Support 36 $0.00 284 $29,275.00
Firefighters and Protective Service 85 $21,042.00 7 $0.00
Law Enforcement 11 $0.00 0 $0.00
Food Preparation and Serving 196 $13,750.00 334 $13,056.00
Building and Grounds Cleaning 122 $22,381.00 78 $31,739.00
Personal Care and Service 234 $9,205.00 222 $16,250.00
Sales 425 $40,288.00 539 $30,231.00
Office and Administrative Support 481 $16,976.00 942 $34,221.00
Farming, Fishing, and Forestry 11 $0.00 7 $0.00
Construction and Extraction 145 $33,413.00 0 $0.00
Installation, Maintenance, and Repair 179 $11,956.00 12 $0.00
Production 111 $61,563.00 93 $59,375.00
Transportation and Material Moving 278 $35,795.00 40 $17,143.00

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 15,263 households in 02139, with an average household size of 2.19 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 6,446 families living in the 02139 zip code with an average family size of 2.86 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 02139:

Married Male Female Nonfamily
Total Households 4,789 380 1,277 8,817
Average Household Size 3 2.79 2.69 1.66
Total Families 4,789 380 1,277 0
Average Household Size 2.95 2.55 2.62 0

Poverty

Of the 6,446 families living in 02139, 6.80% are considered to be below the poverty threshold.

The table below shows the latest poverty thresholds in 02139:

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 16,145 housing units in 02139.

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

Total Percentage
Occupied 15,263 94.54%
Vacant 882 5.46%

61.07% of the total 16,145 housing units in 02139 are rental units. This is approximately 9,859 properties.

For owner-occupied housing units, a total of 5,235 are occupied by the owner - or 32.42% of the total.

Rental Rates

The median rent for a property in 02139 is $2,314.00.

In the chart below, we can look at the number of rental properties in 02139 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
    169
  • Less than $500
    1,014
  • $500 to $999
    768
  • $1,000 to $1,499
    737
  • $1,500 to $1,999
    1,122
  • $2,000 to $2,499
    2,049
  • $2,500 to $2,999
    1,565
  • $3,000 or more
    2,604

Property Value

The median value of a property in 02139 is $902,900.00.

Just like with rental rates, we can look at the number of properties in 02139 that fall into a particular value range.

  • Less than $50,000
    51
  • $50,000 to $99,999
    24
  • $100,000 to $149,999
    54
  • $150,000 to $199,999
    68
  • $200,000 to $299,999
    176
  • $300,000 to $499,999
    286
  • $500,000 to $999,999
    2,359
  • $1,000,000 or more
    2,217

Property Age

We can also look at the age of properties in 02139. The chart below shows the number of properties in 02139 that fall into a particular age range.

  • 1939 or earlier
    8,285
  • 1940 to 1949
    601
  • 1950 to 1959
    1,021
  • 1960 to 1969
    992
  • 1970 to 1979
    1,468
  • 1980 to 1989
    1,378
  • 1990 to 1999
    635
  • 2000 to 2009
    1,315
  • 2010 to 2013
    450
  • 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 02139 that have a particular number of vehicles available.

  • No vehicles available
    5,636
  • 1 vehicle available
    7,037
  • 2 vehicles available
    2,159
  • 3 or more vehicles available
    431

Commuting to Work

In this section, we can also look at how people in 02139 get to work. The chart below shows the number of people in 02139 that commute to work in a particular way.

24.9 minutes is the average travel time to work for people in 02139.

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
    314
  • 5 to 9 minutes
    1,339
  • 10 to 14 minutes
    2,570
  • 15 to 19 minutes
    3,402
  • 20 to 24 minutes
    3,255
  • 25 to 29 minutes
    1,423
  • 30 to 34 minutes
    2,739
  • 35 to 39 minutes
    777
  • 40 to 44 minutes
    1,333
  • 45 to 59 minutes
    1,457
  • 60 to 89 minutes
    557
  • 90 or more minutes
    280

Summary

We've covered a LOT of demographic and population data for 02139 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 02139

If you want to see how the population and demographics of 02139 compare to other zip codes in Massachusetts, check out the list of all Massachusetts zip codes below: