Walnut, California Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates
The population of Walnut, California is 27,857 as of the 2023 American Community Survey, making it the 281st-largest city in California. The median household income is $133,762, the median home value is $972,500, and the median age is 46.4.
The population has declined 6.7% since 2010 (29,203 → 27,250).
27,857
Population
3099
People / sq mi
$133,762
Median Income
$972,500
Median Home Value
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Walnut covers 9.0 sq mi of land at 3099 people per square mile.
About Walnut, CA
In Walnut, home values do the distinguishing — a median of $972,500. Walnut is a city in California with a population of 27,857.
The typical household earns $133,762 a year, above the US median of $78,538. The poverty rate is 7.1%, below the national 12.4%. Real estate commands a premium here — a median home value of $972,500, with typical rent around $3,120.
Educational attainment is on the higher side for US cities — 55.3% of adults hold a four-year degree, above the national 35.0%. Remote work is on the higher side at 18.5%, above the national 14.0%, and the average commute runs about 35 minutes each way.
High housing values reframe the income picture in Walnut — even solid earnings stretch less against home prices and rents at this level.
Walnut city Population History (2010-2024)
The city of Walnut city had a population of 29,203 in 2010 and 27,250 in 2024, a -6.7% growth over 14 years. The peak was 30,015 in 2017. Average annual growth rate: -0.48%.
27,250
Population (2024)
29,203
Population (2010)
30,015
Peak (2017)
-0.48%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 29,203 |
| 2011 | 29,471 |
| 2012 | 29,842 |
| 2013 | 29,919 |
| 2014 | 29,940 |
| 2015 | 29,990 |
| 2016 | 29,925 |
| 2017 | 30,015 |
| 2018 | 29,910 |
| 2019 | 29,685 |
| 2020 | 28,350 |
| 2021 | 27,775 |
| 2022 | 27,445 |
| 2023 | 27,284 |
| 2024 | 27,250 |
Race & Ethnicity
| White | 12.7% |
| Black or African American | 2.5% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 0.5% |
| Two or More Races | 0.4% |
Economy & Income
$133,762
Median Household Income
$51,555
Per Capita Income
7.1%
Poverty Rate
2.1%
Unemployment Rate
Housing
$972,500
Median Home Value
$3,120
Median Rent
82.7%
Owner-Occupied
Education
93.9%
High School+
55.3%
Bachelor's+
Commute
2.4%
Drive Alone
68.0%
Public Transit
18.5%
Work From Home
34.5 min
Avg Commute
Community Profile
6.7%
Foreign Born
33.3%
Non-English at Home
2.7%
Veterans
7.5%
With Disability
95.2%
Health Insurance
97.6%
Internet Access
Employment by Industry
| Professional, Scientific & Management | 25.0% |
| Finance, Insurance & Real Estate | 13.7% |
| Information | 10.0% |
| Manufacturing | 7.6% |
| Education, Health Care & Social Services | 6.7% |
| Retail Trade | 6.0% |
| Public Administration | 4.7% |
| Arts, Entertainment & Food Services | 3.9% |
| Construction | 3.2% |
| Transportation & Warehousing | 1.5% |
| Agriculture & Mining | 0.5% |
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Frequently Asked Questions
Walnut, California has a population of 27,857 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 281st-largest city in California.
The median household income in Walnut, California is $133,762, with 7.1% of residents living below the federal poverty level.
The median home value in Walnut, California is $972,500, with median monthly rent at $3,120 and a homeownership rate of 82.7%.
The median age in Walnut, California is 46.4 years. The population is 49.6% male and 50.4% female.
The population has declined 6.7% since 2010 (29,203 → 27,250).
Where to stay in Walnut
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.