Demographics of Walnut city, California

Walnut city, California had 27,316 people on July 1, 2025, by the Census Bureau’s estimate: −1,031 since July 2020. Age, income, poverty, housing and origin below come from the survey, averaged over 2020–2024, each with its margin of error.

Walnut city, in four figures

27,316
Population: July 1, 2025, Vintage 2025 estimate. The survey’s 2020–⁠2024 figure is 27,611 ±45.; −3.6%
Change since July 2020: −1,031 people.; 46.8 ±1.7
Median age: ACS 2020–⁠2024.; $129,449 ±$13,739
Median household income: ACS 2020–⁠2024, in 2024 dollars.

Population, year by year

July 1 estimates from the Census Bureau’s Vintage 2025. The Bureau publishes no births, deaths or migration for a place, so the change is the difference between one July estimate and the next.

Walnut city, California's population shrank 3.6% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Walnut city, California's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).

U.S. Census Bureau — Census Bureau population estimates — incorporated places and New England towns

About this chart

The figures

Walnut city, California's population shrank 3.6% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Walnut city, California's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).
July 1	Population	Index	United States
2020	28,347	100.0	100.0
2021	27,779	98.0	100.2
2022	27,444	96.8	100.7
2023	27,287	96.3	101.6
2024	27,310	96.3	102.5
2025	27,316	96.4	103.1

Population of Walnut city, California on July 1 of each year, Vintage 2025
July 1	Population	Change
2020	28,347	—
2021	27,779	−568
2022	27,444	−335
2023	27,287	−157
2024	27,310	+23
2025	27,316	+6

Age, 2020–2024

The median age is 46.8 ±1.7: for men 44.5 ±2.0 and for women 49.1 ±2.0. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Walnut city by age, ACS 2020–2024
Age	People	Share	California	United States
Under 5	1,098 ±242	4.0% ±0.9	5.5% ±<0.1	5.6% ±<0.1
5 to 17	4,358 ±464	15.8% ±1.7	16.5% ±<0.1	16.3% ±<0.1
18 to 24	1,752 ±275	6.3% ±1.0	9.1% ±<0.1	9.1% ±<0.1
25 to 44	5,977 ±474	21.6% ±1.7	28.7% ±<0.1	26.9% ±<0.1
45 to 64	7,796 ±571	28.2% ±2.1	24.6% ±<0.1	24.8% ±<0.1
65 and over	6,630 ±514	24.0% ±1.9	15.7% ±<0.1	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $129,449 ±$13,739, and income per person $52,304 ±$3,378, in 2024 dollars. The median is $99,122 ±$310 in California and $80,734 ±$166 in the United States.

Households by income

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Households in Walnut city by income, ACS 2020–2024
Household income	Households	Share	California	United States
Under $25,000	795 ±216	9.2% ±2.5	12.5% ±0.1	14.6% ±<0.1
$25,000 to $49,999	747 ±172	8.6% ±2.0	13.3% ±0.1	16.7% ±<0.1
$50,000 to $74,999	862 ±240	9.9% ±2.7	13.0% ±0.1	15.5% ±<0.1
$75,000 to $99,999	940 ±216	10.8% ±2.5	11.6% ±0.1	12.6% ±<0.1
$100,000 to $149,999	1,652 ±291	19.1% ±3.3	17.8% ±0.1	17.5% ±<0.1
$150,000 to $199,999	1,277 ±201	14.7% ±2.3	11.3% ±0.1	9.6% ±<0.1
$200,000 or more	2,392 ±242	27.6% ±2.6	20.5% ±0.1	13.4% ±0.1

Poverty by age

The poverty rate is the share of people whose family income is below the federal threshold for their family’s size, of everyone for whom the Bureau determines it (B17020).

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Poverty rate in Walnut city by age, ACS 2020–2024
Age	Below poverty	Rate	California	United States
All ages	2,778 ±685	10.1% ±2.5	12.0% ±0.1	12.5% ±0.1
Under 18	751 ±228	14.0% ±4.0	15.0% ±0.1	16.1% ±0.1
18 to 59	1,184 ±338	9.0% ±2.5	11.0% ±0.1	11.6% ±0.1
60 and over	843 ±321	9.4% ±3.5	11.5% ±0.1	11.0% ±<0.1

Housing, 2020–2024

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Housing in Walnut city, ACS 2020–2024
Measure	Walnut city	California	United States
Housing units	9,230 ±312	14,644,735 ±1,665	143,775,355 ±10,234
Occupied	93.9% ±0.5	92.5% ±0.1	89.9% ±0.1
Vacant	6.1% ±2.0	7.5% ±0.1	10.1% ±0.1
Owner occupied	83.8% ±3.5	55.9% ±0.3	65.2% ±0.3
Renter occupied	16.2% ±2.7	44.1% ±0.2	34.8% ±0.1
Median home value	$1,014,000 ±$37,527	$734,700 ±$1,307	$332,700 ±$236
Median gross rent	$3,202 ±$442	$2,036 ±$5	$1,413 ±$2
Median year built	1982 ±2	1976 ±1	1980 ±1

Occupied and vacant are shares of all housing units; owner and renter occupied are shares of occupied units. Value and rent are medians in 2024 dollars.

Origin and place of birth, 2020–2024

Hispanic or Latino origin is not a race in the Census Bureau’s tables. Here the people of Hispanic origin, of any race, are one row, and everyone else is counted by race alone (B03002), so the rows add to the whole.

Hispanic origin and race

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People in Walnut city by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	California	United States
Hispanic or Latino	4,762 ±800	17.2% ±2.9	40.2% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	2,518 ±465	9.1% ±1.7	33.8% ±<0.1	57.4% ±<0.1
Black alone, not Hispanic	527 ±213	1.9% ±0.8	5.2% ±<0.1	11.9% ±<0.1
Asian alone, not Hispanic	18,982 ±943	68.7% ±3.4	15.3% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	0 to 80	0% to 0.3%	0.3% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	22 to 250	0.1% to 0.9%	0.3% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	20 to 244	0.1% to 0.9%	0.6% ±<0.1	0.6% ±<0.1
Two or more races, not Hispanic	523 ±206	1.9% ±0.7	4.4% ±<0.1	4.3% ±<0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Place of birth and citizenship

“Born a citizen outside the states” counts people born in Puerto Rico, the island areas, or abroad to American parents. Naturalized citizens and those who are not citizens together make up the people born abroad (B05002).

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People in Walnut city by place of birth and citizenship, ACS 2020–2024
Born	People	Share	California	United States
Born in the state	10,961 ±679	39.7% ±2.5	56.5% ±0.1	57.3% ±<0.1
Born in another state	1,858 ±295	6.7% ±1.1	15.0% ±0.1	26.9% ±<0.1
Born a citizen outside the states	461 ±159	1.7% ±0.6	1.5% ±<0.1	1.7% ±<0.1
Born abroad	14,331 ±707	51.9% ±2.6	27.0% ±0.1	14.1% ±<0.1
Naturalized citizens	9,982 ±730	36.2% ±2.6	14.7% ±0.1	7.4% ±<0.1
Not citizens	4,349 ±685	15.8% ±2.5	12.3% ±0.1	6.8% ±<0.1

Walnut city among the places of California

280th of 661 places of 5,000 or more by the survey’s 2020–2024 count. Every one is listed on the California page.

Places of California near Walnut city in population, ACS 2020–2024
Place	ACS 2020–⁠2024
East Palo Alto city	29,069 ±37
East Niles CDP	28,532 ±2,476
Eastern Goleta Valley CDP	28,295 ±1,514
Ridgecrest city	28,225 ±62
Lemon Grove city	27,686 ±39
Walnut city	27,611 ±45
Twentynine Palms city	27,355 ±56
Belmont city	27,337 ±45
Brawley city	27,283 ±33
Lemoore city	27,102 ±48
Benicia city	26,749 ±59

Elsewhere on the site

Reported crime in Walnut city, California

Sources

Census Bureau population estimates — incorporated places and New England towns — U.S. Census Bureau · U.S. Government work · retrieved September 25, 2026
American Community Survey 5-year estimates — table-based Summary File · U.S. Government work

Data retrieved September 25, 2026