ZIP Code Tabulation Area

91789

Walnut, CA · ACS 2020–2024

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Latest estimates

At a glance

U.S. Census Bureau American Community Survey 5-year estimates.

Total population
40,298
Median household income
$125,720
People below poverty
9.2%
Median home value
$975,000

Income

The median income of households in 91789 was $125,720. An estimated 4.9% of households had income below $10,000 a year and 25.5% had income of $200,000 or more.

Household Income in 91789 in 2020-2024

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Percent
Less than $10,000 4.9
$10,000 to $14,999 1.3
$15,000 to $24,999 2.4
$25,000 to $34,999 4.7
$35,000 to $49,999 6
$50,000 to $74,999 10
$75,000 to $99,999 9.7
$100,000 to $149,999 20.7
$150,000 to $199,999 14.8
$200,000 or more 25.5

Median Earnings for Full-Time Year-Round Workers by Sex in 91789 in 2020-2024

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Dollars
Male 83914
Female 69590

An estimated 79.2% of households received earnings. An estimated 38.1% of households received Social Security and an estimated 26.6 % of households received retirement income other than Social Security. The average income from Social Security was $25,900. These income sources are not mutually exclusive; that is, some households received income from more than one source.

Proportion of Households with Various Income Sources in 91789 in 2020-2024

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Percent
Earnings 79.2
Social Security 38.1
Retirement income 26.6
Supplemental Security Income (SSI) 5.3
Cash public assistance income 3.4

Poverty and Participation in Government Programs

In 2020-2024, 9.2 % of people were in poverty. An estimated 12.8% of children under 18 were below the poverty level, compared with 10% of people 65 years old and over. An estimated 7.8% of people 18 to 64 years were below the poverty level.

Poverty Rates in 91789 in 2020-2024

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Percent
People in poverty 9.2
Children under 18 years below poverty 12.8
People 65 years old and over below poverty 10
People 18 to 64 years below poverty 7.8

In 2020-2024, 7.1 % of households received SNAP (the Supplemental Nutrition Assistance Program). An estimated 45.1% of households that received SNAP had children under 18, and 65.8% of households that received SNAP had one or more people 60 years and over. An estimated 18.6% of all households receiving SNAP were families with a female householder and no spouse present.


Among the civilian noninstitutionalized population in 91789 in 2020-2024, 95.9% had health insurance coverage and 4.1% did not have health insurance coverage. Private coverage was 69.3% and public coverage was 36.8%, respectively. The percentage of children under the age of 19 with no health insurance coverage was 3.1%.


In 2020-2024, 91789 had a total population of 40,298 - 20,682 (51.3%) females and 19,616 (48.7%) males. The median age was 46.3 years. An estimated 19.8% of the population was under 18 years, 26.8% was 19 to 44 years, 29.2% was 45 to 64 years, and 22.3 % was 65 years and older.

Population by Age and Sex for 91789 in 2020-2024

Male Female
Under 5 734 890
5 to 9 1081 1240
10 to 14 1449 1357
15 to 19 966 1009
20 to 24 1123 815
25 to 29 1253 1048
30 to 34 1125 1079
35 to 39 1070 949
40 to 44 1046 1282
45 to 49 1179 1337
50 to 54 1319 1254
55 to 59 1407 1811
60 to 64 1505 1967
65 to 69 1541 1924
70 to 74 1224 1308
75 to 79 826 749
80 to 84 451 370
85 and over 317 293

Hispanic Origin and Race

For people reporting one race alone, 12.6% were White; 1.7% were Black or African American; 1.1% were American Indian and Alaska Native; 67.8% were Asian; 0.8% were Native Hawaiian and Other Pacific Islander, and 0% were Some Other Race. An estimated 8.7% reported Two or More Races. An estimated 18.1% of the people in 91789 were Hispanic or Latino. An estimated 9.6% of the people in 91789 were White alone, non-Hispanic. People of Hispanic origin may be of any race.


Households and Families

In 2020-2024, there were 12,681 households in 91789. The average household size was 3.17 people.

Married-couple households made up 68.6% of the households in 91789 while cohabiting couple households made up 2.3% of households. Female householders with no spouse or partner present were 18.6% of all households, while 10.4% of households had male householders with no spouse or partner present. Some households had one person, as 3.2% of households were male householders living alone, and 8.5% were female householders living alone, for a total of 11.7% of all households.

In 91789, 31.8% of all households had one or more people under the age of 18; 45% of all households had one or more people 65 years and over.

Types of Households in 91789 in 2020-2024

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Percent
Married-couple households 68.6
Cohabiting Couples 2.3
Male Householder
No spouse/partner present
10.4
Female Householder
No spouse/partner present
18.6

Marital Status

Among persons 15 and older, 63.3% of males and 61% of females were currently married.

Population 15 years and over Percent
Males
Percent
Females
Never married 30.9 24.7
Now married, except separated 63.3 61
Separated 0.8 1.8
Widowed 2 5.9
Divorced 3.1 6.6

Grandparents and Grandchildren

In 91789, 1,603 grandparents lived with their grandchildren under 18 years old. Of those grandparents, 17.7% were responsible for the basic needs of their grandchildren.


Nativity and Foreign-Born

In 2020-2024, an estimated 49.5% of the people living in 91789 were U.S. natives. 40.7% of the 91789 population were living in the state where they were born.

Approximately 50.5% of 91789 residents in 2020-2024 were foreign-born. 69.1% of foreign-born were naturalized U.S. citizens and an estimated 74.9 % entered the country before the year 2010.

Foreign-born residents of 91789 come from different parts of the world. The bar graph below displays the percentage of foreign-born from each world region of birth in 2020-2024 for 91789.

Region of Birth for the Foreign-Born Population in 91789 in 2020-2024

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Percent
Latin America 5.7
Asia 91
Europe 1.7
Africa 0.8
Northern America 0.3
Oceania 0.5

Language

Among people at least five years old living in 91789 in 2020-2024, 67.8 % spoke a language other than English at home. Spanish was spoken by 9% of people at least five years old; 32.8% reported that they did not speak English "very well."

Percentage of the Population 5 years and over who Speak a Language other than English in 91789 in 2020-2024

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Percent
Spanish 9
Other Indo-European languages 5.2
Asian and Pacific Islander languages 52.9
Other languages 0.7

Geographic Mobility

In 2020-2024, 91.3 % of the people at least one year old living in 91789 were living in the same house one year earlier.

Geographic Mobility of Residents of 91789 in 2020-2024

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Percent
Same house 91.3
Different house, same county 4.7
Different county, same state 2
Different state 0.5
Abroad 1.5

Education

In 2020-2024, 93.8 % of people 25 years and over had at least graduated from high school and 54.4% had a bachelor's degree or higher. An estimated 6.2% did not complete high school.

The total school enrollment in 91789 was 9,793 in 2020-2024. Nursery school enrollment was 466 and kindergarten through 12th grade enrollment was 6,018. College or graduate school enrollment was 3,309.

Educational Attainment of People in 91789 in 2020-2024

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Percent
Less than high school diploma 6.2
High school diploma or equivalency 15
Some college, no degree 14.8
Associate's degree 9.6
Bachelor's degree 35.1
Graduate or professional degree 19.3

Disability

In 91789, among the civilian noninstitutionalized population in 2020-2024, 7.5 % reported a disability. The likelihood of having a disability varied by age - from 1.3% of people under 18 years old, to 4.6% of people 18 to 64 years old, and to 20.5% of those 65 and over.


Employment Status and Type of Employer

In 91789, 56.3 % of the population 16 and over were employed; 41.1% were not currently in the labor force.

An estimated 78.2% of the people employed were private wage and salary workers; 15.4% were federal, state, or local government workers; and 6 % were self-employed in their own (not incorporated) business.

Class of worker Number Percent
Private wage and salary workers 14,595 78.2
Federal, state, or local government workers 2,872 15.4
Self-employed workers in own not incorporated business 1,120 6

Industries

In 2020-2024, the civilian employed population 16 years and older in 91789 worked in the following industries:

Percent by Industry in 91789 in 2020-2024

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Percent
Agriculture, forestry, fishing and hunting, and mining 0.3
Construction 3.4
Manufacturing 8.7
Wholesale trade 6.7
Retail trade 10
Transportation and warehousing, and utilities 6.9
Information 1.5
Finance and insurance, and real estate and rental and leasing 8
Professional, scientific, and management, and administrative and waste management services 12.6
Educational services, and health care and social assistance 24.7
Arts, entertainment, and recreation, and accommodation, and food services 7.9
Other Services, except public administration 4
Public administration 5.2

Occupations

Occupations for the Civilian Employed Population 16 Years and over in 91789 in 2020-2024

Civilian employed population 16 years and over Number Percent
Management, business, sciences, and arts occupations 10,027 53.7
Service occupations 2,288 12.3
Sales and office occupations 4,221 22.6
Natural resources, construction, and maintenance occupations 636 3.4
Production, transportation, and material moving occupations 1,490 8

Commuting to Work

An estimated 65.4% of 91789 workers drove to work alone in 2020-2024, and 10.1% carpooled. Among those who commuted to work, it took them on average 33.5 minutes to get to work.

Percent of Workers 16 and over Commuting by Mode in 91789 in 2020-2024

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Percent
Car, truck, van -- drove alone 65.4
Car, truck, van -- carpooled 10.1
Public transportation (excluding taxicab) 1.3
Walked 0.9
Other means 1.6
Worked from home 20.6

In 2020-2024, 91789 had a total of 13,503 housing units. Of these housing units, 91.6% were single-family houses either not attached to any other structure or attached to one or more structures (commonly referred to as "townhouses" or "row houses"). 4.6% of the housing units were located in multi-unit structures, or those buildings that contained two or more apartments. 3.8% were mobile homes, while any remaining housing units were classified as "other," which included boats, recreational vehicles, vans, etc.

Types of Housing Units in 91789 in 2020-2024

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Percent
Single-family houses 91.6
Apartments in multi-unit structures 4.6
Mobile homes 3.8
Boat, RV, van, etc 0.1

3.1% of the housing inventory was comprised of houses built since 2010, while 0.7% of the houses were first built in 1939 or earlier. The median number of rooms in all housing units in 91789 was 6.4 rooms, and of these housing units 89.3% had three or more bedrooms.


In 2020-2024, 91789 had 12,681 housing units that were occupied or had people living in them, while the remaining 822 were vacant. Of the occupied housing units, the percentage of these houses occupied by owners (also known as the homeownership rate) was 82.1% while renters occupied 17.9%. The average household size of owner-occupied houses was 3.06 and in renter-occupied houses it was 3.69.

2.6% of householders of these occupied houses had moved into their house since 2021, while 18.6% moved into their house in 1989 or earlier. Households without a vehicle available for personal use comprised 2.4% and another 40% had three or more vehicles available for use.

The following chart provides the primary fuel used to heat houses in 91789:

House Heating Fuel Used in 91789 in 2020-2024

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Percent
Gas 83.4
Electricity 14.7
Fuel oil, kerosene, etc 0.1
All other fuels 1.3
No fuel used 0.6

In 2020-2024, the median property value for owner-occupied houses in 91789 was $975,000.

Of the owner-occupied households, 59.3 % had a mortgage. 40.7% owned their houses "free and clear," that is without a primary mortgage or loan on the house. The median monthly housing costs for owners with a mortgage was $3,313 and for owners without a mortgage it was $1,015.

For renter-occupied houses, the median gross rent for 91789 was $2,865. Gross rent includes the monthly contract rent and any monthly payments made for electricity, gas, water and sewer, and any other fuels to heat the house.