91770 Zip Code Population and Demographics

In this article, we'll explore the population statistics for the zip code 91770, including popular demographics data like median age, number of households, household income, gender, employment and unemployment rates, occupations, religion, and more.

91770 is a zip code in Los Angeles County, California, which covers Southwest San Gabriel Valley CCD and Upper San Gabriel Valley, with a total population of 59,685 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 91770 zip code. The most basic data is the total population, which is the total number of people living in 91770.

The estimated population of people living in 91770 is 59,685, with a median age of 42.1.

We can look back at data from previous years to see how the population in the 91770 area has changed over the last 5 years.

Year Population Change 5-Year Change
2021
59,685
 -5.53% -6.71%
2020
63,177
+0.76%
-
2019
62,703
 -1.14% -
2018
63,425
 -0.87% -
2017
63,981
 - -

Population of 91770 by Race and Ethnicity

How much has the race and ethnicity of the population in the 91770 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
3.8%
4.2%
 -9.52%
Black/African American
0.4%
0.2%
 +100.00%
Native
0.3%
0.3%
 0.00%
Hispanic
30%
34.4%
 -12.79%
Asian
64.2%
60.3%
 +6.47%
Hawaiian/Pacific Islander
0%
0.1%
 -100.00%
Two Or More Races
1.2%
0.7%
 +71.43%
Other
0.1%
0%
 0.00%

This data can be very important for anybody studying the 91770 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 91770 by Age and Gender

We can also monitor the change of the age and gender in the 91770 zip code to track track trends in the population over time.

We can see how the population in 91770 has changed over the last 5 years by median age as a total, and also by male and female.

Year Total Male Female
2021 42.1 +0.72% 40 0% 44.9 +1.81%
2020 41.8 -0.48% 40 -2.2% 44.1 +3.04%
2019 42 +0.48% 40.9 0% 42.8 +0.71%
2018 41.8 -0.48% 40.9 +0.25% 42.5 -1.39%
2017 42 - 40.8 - 43.1 -

The median age of the 91770 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 91770 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 3,364 -7.9% 3,001 -9.54% 3,055 2,684
10 to 19 4,066 -7.36% 3,600 -7.44% 3,752 3,326
20 to 29 4,847 -17.59% 4,063 -9.63% 4,036 3,658
30 to 39 3,278 +22.51% 3,974 -7.62% 4,076 3,674
40 to 49 4,635 -13.38% 4,697 -26.13% 4,040 3,571
50 to 59 4,732 -12.56% 4,636 +0.83% 4,162 4,655
60 to 69 3,696 -3.03% 3,927 +8.29% 3,576 4,236
70+ 3,163 -0.17% 4,302 -6.45% 3,154 4,030

Median Household Income

The latest median household income for the 91770 zip code is $65,042.00.

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 91770.

  • Under 25
    $42,266.00
  • 25 to 44
    $72,919.00
  • 45 to 64
    $67,847.00
  • 65 and over
    $51,025.00

Average Household Income

Whenever we ask what is the average household income in the 91770 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 91770, 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 91770 is currently $82,017.00.

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.

5.22% of households in 91770 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 91770 against other zip codes.

  • Less than $24,999
    15.23%
  • $25,000 to $49,999
    24.07%
  • $50,000 to $74,999
    18.55%
  • $75,000 to $99,999
    13.11%
  • $100,000 to $149,999
    17.06%
  • $150,000 to $199,999
    6.76%
  • $200,000 or more
    5.22%

Per Capita Income

The per capita income in 91770 is $23,748.00.

Per capita income is the average income of a person in a given area. It is calculated by dividing the total income of 91770 by the total population of 91770.

This is different from the average or mean income because it includes and accounts for all people living in the 91770 area, including people like children, the elderly, unemployed people, retired people, and more.

Education Levels

We can also look at the education levels in 91770 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
    5.94%
  • Bachelor's degree
    34.24%
  • Some college or associate's degree
    6.88%
  • High school diploma or equivalent
    44.32%
  • Less than high school diploma
    8.62%

Employment

Employment rates are all based around the total population in 91770 that are over the age of 16.

Currently, the total population of the 91770 zip over the age of 16 is 49,785.

Of those people, a total of 58.80% 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 91770 is 55.50%.

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 91770 zip code.

Age Population Participation Unemployment Rate
16 to 19 years 2,917 10.80% 8.30%
20 to 24 years 3,649 66.30% 11.00%
25 to 29 years 4,045 80.80% 8.90%
30 to 34 years 3,889 85.60% 4.60%
35 to 44 years 7,319 81.40% 5.20%
45 to 54 years 8,290 78.40% 2.60%
55 to 59 years 4,680 78.00% 6.00%
60 to 64 years 4,190 52.80% 5.20%
65 to 74 years 6,195 21.10% 4.90%
75 years and over 4,611 7.00% 0.00%

Employment by Race

Another very interesting employment statistic we can look at is the employment and unemployment rates by race in 91770. 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 5,217 54.90% 5.30%
Black or African American 314 31.80% 0.00%
American Indian and Alaska Native 330 57.00% 0.00%
Asian 32,802 58.40% 5.80%
Native Hawaiian and Other Pacific Islander 7 0.00% 0.00%
Other 9,233 61.70% 4.10%
Two or more races 1,882 67.50% 9.00%
Hispanic or Latino 14,003 61.80% 4.70%
Not Hispanic or Latino 2,060 45.00% 7.10%

Occupations

In this section we can look at the most common occupations for people living in the 91770 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 91770 is 27,655, with median earnings of $32,037.00.

Women in 91770 are earning approximately 90.60% of the men's earnings.

Population Earnings
Total 27,655 $32,037.00
Male 15,068 $33,816.00
Female 12,587 $30,629.00

Occupations by Category

In the table below, we can break down the population and earnings for 91770 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 2,317 $49,510.00
Business and Financial 1,436 $64,147.00
Computer and Mathematical 712 $64,012.00
Architecture and Engineering 473 $84,688.00
Life, Physical, and Social Science 168 $54,329.00
Community and Social Service 274 $53,500.00
Legal 225 $63,789.00
Educational and Library 789 $35,781.00
Arts, Design, Entertainment, Sports, and Media 408 $46,500.00
Healthcare Practitioners 1,128 $52,315.00
Healthcare Support 1,689 $23,208.00
Firefighters and Protective Service 218 $27,292.00
Law Enforcement 122 $55,549.00
Food Preparation and Serving 2,197 $20,967.00
Building and Grounds Cleaning 721 $26,098.00
Personal Care and Service 1,269 $18,082.00
Sales 2,601 $22,648.00
Office and Administrative Support 4,236 $37,220.00
Farming, Fishing, and Forestry 57 $11,793.00
Construction and Extraction 1,425 $25,908.00
Installation, Maintenance, and Repair 693 $39,266.00
Production 2,121 $33,100.00
Transportation and Material Moving 1,344 $26,439.00

Occupations by Gender

Now we can also look at the occupations by category for 91770 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 91770.

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 1,374 $47,422.00 943 $53,207.00
Business and Financial 589 $63,170.00 847 $64,627.00
Computer and Mathematical 574 $63,459.00 138 $75,610.00
Architecture and Engineering 398 $80,000.00 75 $89,750.00
Life, Physical, and Social Science 127 $53,506.00 41 $79,107.00
Community and Social Service 122 $63,906.00 152 $48,056.00
Legal 51 $112,277.00 174 $44,747.00
Educational and Library 231 $40,859.00 558 $33,375.00
Arts, Design, Entertainment, Sports, and Media 292 $49,231.00 116 $36,250.00
Healthcare Practitioners 367 $50,707.00 761 $54,904.00
Healthcare Support 441 $24,241.00 1,248 $22,957.00
Firefighters and Protective Service 168 $23,500.00 50 $44,342.00
Law Enforcement 68 $28,704.00 54 $56,646.00
Food Preparation and Serving 1,419 $25,097.00 778 $12,912.00
Building and Grounds Cleaning 390 $27,100.00 331 $21,198.00
Personal Care and Service 348 $24,100.00 921 $15,243.00
Sales 1,188 $26,033.00 1,413 $19,548.00
Office and Administrative Support 1,508 $40,095.00 2,728 $36,655.00
Farming, Fishing, and Forestry 38 $10,761.00 19 $45,341.00
Construction and Extraction 1,366 $26,096.00 59 $24,427.00
Installation, Maintenance, and Repair 681 $39,592.00 12 $0.00
Production 1,300 $41,364.00 821 $28,004.00
Transportation and Material Moving 1,261 $26,774.00 83 $25,174.00

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 16,192 households in 91770, with an average household size of 3.64 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 13,395 families living in the 91770 zip code with an average family size of 3.97 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 91770:

Married Male Female Nonfamily
Total Households 9,308 1,461 2,626 2,797
Average Household Size 4.15 4.13 3.83 1.5
Total Families 9,308 1,461 2,626 0
Average Household Size 4.08 3.85 3.63 0

Poverty

Of the 13,395 families living in 91770, 9.70% are considered to be below the poverty threshold.

The table below shows the latest poverty thresholds in 91770:

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 17,101 housing units in 91770.

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

Total Percentage
Occupied 16,192 94.68%
Vacant 909 5.32%

43.02% of the total 17,101 housing units in 91770 are rental units. This is approximately 7,356 properties.

For owner-occupied housing units, a total of 8,311 are occupied by the owner - or 48.60% of the total.

Rental Rates

The median rent for a property in 91770 is $1,565.00.

In the chart below, we can look at the number of rental properties in 91770 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
    525
  • Less than $500
    286
  • $500 to $999
    734
  • $1,000 to $1,499
    2,334
  • $1,500 to $1,999
    2,495
  • $2,000 to $2,499
    921
  • $2,500 to $2,999
    497
  • $3,000 or more
    89

Property Value

The median value of a property in 91770 is $601,300.00.

Just like with rental rates, we can look at the number of properties in 91770 that fall into a particular value range.

  • Less than $50,000
    196
  • $50,000 to $99,999
    111
  • $100,000 to $149,999
    30
  • $150,000 to $199,999
    119
  • $200,000 to $299,999
    127
  • $300,000 to $499,999
    1,883
  • $500,000 to $999,999
    5,478
  • $1,000,000 or more
    367

Property Age

We can also look at the age of properties in 91770. The chart below shows the number of properties in 91770 that fall into a particular age range.

  • 1939 or earlier
    2,066
  • 1940 to 1949
    2,592
  • 1950 to 1959
    3,752
  • 1960 to 1969
    2,286
  • 1970 to 1979
    1,971
  • 1980 to 1989
    2,195
  • 1990 to 1999
    1,040
  • 2000 to 2009
    894
  • 2010 to 2013
    305
  • 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 91770 that have a particular number of vehicles available.

  • No vehicles available
    932
  • 1 vehicle available
    3,995
  • 2 vehicles available
    5,808
  • 3 or more vehicles available
    5,457

Commuting to Work

In this section, we can also look at how people in 91770 get to work. The chart below shows the number of people in 91770 that commute to work in a particular way.

29.5 minutes is the average travel time to work for people in 91770.

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
    177
  • 5 to 9 minutes
    1,443
  • 10 to 14 minutes
    3,155
  • 15 to 19 minutes
    3,533
  • 20 to 24 minutes
    4,215
  • 25 to 29 minutes
    1,672
  • 30 to 34 minutes
    4,363
  • 35 to 39 minutes
    687
  • 40 to 44 minutes
    1,136
  • 45 to 59 minutes
    1,772
  • 60 to 89 minutes
    2,300
  • 90 or more minutes
    892

Summary

We've covered a LOT of demographic and population data for 91770 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 91770

If you want to see how the population and demographics of 91770 compare to other zip codes in California, check out the list of all California zip codes below: