Walnut is home to 27,611 people in California. The typical home is worth $1,014,000, having more than tripled since 2000. 52% of people here were born outside the United States. Renters pay $3,202 a month at the median. This is an unusually credentialed place: 57% of adults have a four-year degree. The median age is 46.8, about 8 years above the US median.
At a glance
Wealthier
median household income $129,449, above the US median
US median: $82,259
Older
median age 46.8
US median: 38.9
More educated
57% hold a bachelor's degree
US average: 36%
Less affordable
home values up 99%, inflation adjusted
US median home: $376,019
Unique to this place
What stands out about Walnut
What changed most since 1990
Asian share36.5% → 68.7%(+32.2 pts)US over the same years: +3.1 pts
Hispanic share23.0% → 17.2%(−5.8 pts)US over the same years: +9.9 pts
Median age31.4 → 46.8(+15.4 years)US over the same years: +6.0 years
Shares are "alone or in combination": a person with both Medicare and Medicaid counts in each, so categories overlap and do not sum to 100%.
Section 09 · Service history
Veterans
Veterans by period of service, 2024
Gulf War (2001 or later)7.6%(39)
US avg: 26.4%
Gulf War (1990s)7.8%(40)
US avg: 24.3%
Vietnam era55.7%(284)
US avg: 33.1%
Korean War1%(5)
US avg: 4.5%
World War II0%(0)
US avg: 1%
Share of the 510 veterans here. A veteran who served across eras counts in each, so shares can total more than 100%. Peacetime-only service is included in the total but not shown as an era.
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Over time
Walnut, decade by decade
Walnut population, inflation-adjusted income and home value, education, and diversity by year
Year
Population
Median household income
Median home value
Bachelor's degree+
Diversity score
1990
29,105
$154,404
$768,262
35.1%
87.0
2000
30,004
$147,581
$510,610
41.9%
77.3
2010
29,172
$144,119
$936,366
47.4%
68.3
2020
28,430
$131,220
$977,994
54.9%
63.2
2024
27,611
$129,449
$1,014,000
57.3%
61.0
Census years come from the decennial census and the latest year from the American Community Survey, so part of any change between those two rows can reflect the different surveys. Dollar figures are adjusted for inflation to 2024 dollars; a figure ending in "+" was at the Census Bureau's reporting cap that year. The diversity score runs from 0 to 100; see how it's calculated.
