Walnut, California Demographics
Population trends, housing costs, income, commuting, and health, all on one page.
Walnut, CA Population Density Map and Area Scores
Area Score
Health, income and education, each graded from F to A+. Explore interactive maps for deeper analysis.
-
A+
Health Top grade
-
B
Income Around average
-
A+
Education Top grade
Source: Map AI Methodology
Population
| Metric | Walnut | California Avg | U.S. Average |
|---|---|---|---|
| Population | 27,757 | 39,245,658 | 337,468,954 |
| Population density (per sq mi) | 3086.6 | 239.4 | 86.4 |
| Population growth (%/yr) | -1.04% | 0.19% | 0.59% |
| Median age | 47.8 | 35.5 | 37.3 |
| Households | 8,705 | 13,531,619 | 130,235,071 |
Population in Walnut declined by 10.6% from 2009 to 2024, reaching 27,757 in 2024.
Population Growth 2009–2024
Race & Ethnicity
Age & Sex
The largest generation in Walnut is Gen X, aged 45–60, at 23.7% of residents. That is 3.9 points above California as a whole.
- Gen Z 13–28 5,753 20.7% -1.0 pts
- Millennials 29–44 4,694 16.9% -6.8 pts
- Gen X 45–60 6,590 23.7% +3.9 pts
- Boomers 61–79 6,069 21.9% +6.6 pts
Residents by birth cohort, from the 2025 age distribution. The right-hand figure is how far each cohort's share sits above or below California, in percentage points. Children younger than Gen Z and the generations before the Boomers are counted in the population but not shown here, so these shares do not add up to 100%.
Male and female share
Women are 49.9% of the people living in Walnut and men 50.1%.
- Women 49.9% California 49.9%
- Men 50.1% California 50.1%
How many residents match a customer profile?
Residents matching this profile
100% of everyone living in Walnut
Pick an age range and a women/men split and the figure above answers with how many residents that profile reaches.
Economy
Walnut has a the economy index of B, which means it is quite prosperous.
| Metric | Walnut | California Avg | U.S. Average |
|---|---|---|---|
| Median household income | $130,123 | $99,161 | $80,455 |
| Income growth (%/yr) | 3.79% | 5.57% | 4.80% |
| Unemployment rate | 3.5% | 6.6% | 5.2% |
The median household income in Walnut is about 31% higher than in California.
Housing
| Metric | Walnut | California Avg | U.S. Average |
|---|---|---|---|
| Median home price | $1,112,146 | $650,794 | $248,835 |
| Median rent | $3,186 | $2,036 | $1,407 |
| Homeownership rate | 83.7% | 55.9% | 65.2% |
The median home price in Walnut is about 29.1 years' worth of rent — buying at the median price costs roughly as much as paying the median rent of $3,186 per month for that long.
Commute Time & Mobility
Commuters in Walnut spend about 62 minutes on the road round trip each working day. Over a typical 250-day work year, that adds up to roughly 257 hours, about 10.7 full days, spent commuting.
| Metric | Walnut | California Avg | U.S. Average |
|---|---|---|---|
| One-way commute (min) | 30.8 | 23.5 | 22.4 |
| Round-trip commute (min) | 61.6 | 47.0 | 44.8 |
| Yearly time spent (hours) | 257 | 196 | 187 |
| Estimated yearly cost | $7,957 | $6,065 | $5,790 |
| Work from home | 19.6% | 17.2% | 15.0% |
| Highway traffic (vehicles/day) | 53,737 | 16,509 | 8,813 |
| Local road traffic (vehicles/day) | 3,849 | 2,449 | 1,355 |
The average commute time in Walnut is 31 minutes, longer than the 23 minutes in California.
Estimated yearly cost applies a single national wage rule of thumb (U.S. Bureau of Labor Statistics average hourly earnings), not a measurement of wages in this area. Traffic volume figures come from proprietary Ticon and TrafficZoom data.
Education & Households
Walnut has a education index of A+, which means it is exceptionally educated.
| Metric | Walnut | California Avg | U.S. Average |
|---|---|---|---|
| Bachelor's degree or higher | 51.9% | 33.0% | 31.6% |
| Average household size | 3.18 | 2.84 | 2.53 |
Health
Walnut has a health index of A+, which means it is exceptionally healthy.
| Metric | Walnut | California Avg | U.S. Average |
|---|---|---|---|
| Life expectancy (years) | 83.8 | 79.6 | 78.3 |
| Self-rated poor health | 10.0% | 16.4% | 16.3% |
| Smokers | 6.7% | 13.9% | 19.0% |
Walnut, CA Compared With Nearby Cities
Walnut, CA is the smallest of the 4 cities compared here, 27,757 residents against a local median of 51,499. The measure that sets Walnut, CA apart most is median home price: $1,112,146, 53% above the local median of $728,317.
Median household income tells the same story from another angle: $130,123 against a local median of $101,024, 29% above it. The one measure here that carries a verdict is median household income, and at 29% above the local median it puts Walnut, CA at the better end of the local range. The cities themselves spread $674,583 on median home price, so Walnut, CA sits at one end of an already wide local range rather than apart from it. Walnut, CA has the 2nd highest median home price of the 4 areas compared here.
| Area | Population | Median household income | Median home price | Commute |
|---|---|---|---|---|
| Walnut, CA | 27,757 | $130,123 #1/4 | $1,112,146 #2/4 | 30.8 min #3/4 |
| Diamond Bar, CA | 46,382 | $107,781 | $1,293,304 | 31.4 min |
| West Covina, CA | 107,398 | $101,024 | $728,317 | 30.8 min |
| Covina, CA | 51,499 | $98,863 | $618,720 | 27.2 min |
Frequently Asked Questions
Common questions about Walnut, California.
What is the population of Walnut, California?
About 27,757 people live in Walnut, California, in 8,705 households of 3.2 people on average. The median age is 47.8, so residents are older than the U.S. median of 37.3 by about 11 years.
How densely populated is Walnut, California?
Averaged over its land area, Walnut, California has 3,087 people per square mile, a density typical of a city. That is about 36 times the U.S. average of 86.
How affordable is housing in Walnut, California?
The median home costs 8.5 times the median household income ($1,112,146 against $130,123), compared with 3.1 times nationally. A ratio of about 3 is traditionally considered affordable. Median rent of $3,186 a month takes about 29% of the median household's income, below the 30% level at which HUD considers renters cost-burdened.
Is it hard to find a job in Walnut, California?
Unemployment in Walnut, California is only 3.5%, well below the U.S. rate of 5.2%, a sign of a tight labor market where employers compete for workers.
How common is a college degree in Walnut, California?
51.9% of adults in Walnut, California hold a bachelor's degree or higher (about 5 in 10), well above the U.S. share of 31.6%.
Analyze any area in the US
Get local demographics for any address, aggregated by drive time or radius, on the interactive map.
Explore the map →