Population
27,857 residents
Census ACS 2023 - California
City profile · California · Census ACS 2023
Population, income, housing, safety, climate and schools for Walnut - drawn straight from Census ACS, FBI UCR, NOAA, NCES, HUD and FEMA, refreshed on the 2024–2025 release cycle.
Walnut - the verdict
Out of every US city with 1,000+ residents, Walnut places in the 91st percentile for household income and the 31st percentile for safety. Source: Census ACS + FBI UCR.
Population, income, and housing-cost figures come from the U.S. Census Bureau American Community Survey 5-year estimates (B-series tables). Crime data uses FBI UCR; climate uses NOAA Climate Normals; school counts come from NCES Common Core of Data; permits use the Census Building Permits Survey (BPS). See our methodology page for the full ETL pipeline and OMB / FIPS join keys.
27,857 people live in Walnut, California - a small city by U.S. Census Bureau ACS 2023 estimates. The typical household in Walnut brings in $133,762 a year, placing it in the top quartile of U.S. cities for household income, with a poverty rate of 7.1%. Home values in Walnut run a median of $972,500, and the median resident age is 46.4 years. About 55.3% of adults hold a bachelor's degree or higher, while 55.9% of working-age residents are in the labor force.
In 2024, 181 residential building permits were authorized in Walnut (Building Boom), up 1193% from five years earlier, per Census BPS data. Crime here tracks close to the national norm: the FBI's Uniform Crime Reporting program logs 2018.5 total incidents per 100,000 residents here, near the national average (agency reporting is voluntary, so this measures reporting activity, not a definitive danger score).
California carries a cost-of-living premium: on BEA's 100-equals-national-average cost index, California scores 110.7 (Well Above Average), per the 2024 Regional Price Parities release. Statewide, HUD pegs Fair Market Rent for a two-bedroom unit at $3,236 monthly. EIA 2023 residential energy data puts California's average monthly utility costs around $275 (state average). Workers in Walnut report an average commute of 28.1 minutes, with 68.0% driving alone and 18.5% working from home. On FEMA's National Risk Index, this area rates 99.8 out of 100 for natural-hazard exposure (Very High).
Population
27,857 residents
Census ACS 2023 - California
Median Household Income
$133,762 /yr
Poverty 7.1%
Cost of Living Index (state)
110.7 (US=100)
Well Above Average - BEA RPP 2024, California average
Here's how Walnut stacks up against the full field of US cities (population 1,000+), computed live from Census and FBI data.
"Safer than" reflects total crime rate from FBI UCR; the others use Census ACS estimates.
National percentiles can mask local variation. Looking only at California, Walnut ranks #242 of 441 California cities by lowest crime rate - a narrower, more locally useful cut than the national comparison above.
For each metric we count every US city with population 1,000+ and a non-null value, then compute what share of them fall below Walnut's value: round(cities-below ÷ total × 100). Safety is inverted (percentile = share of cities with a higher crime rate) so a higher number always means safer. The in-state rank narrows that same crime-rate comparison to only the cities PlainCities tracks in California, breaking ties alphabetically. See the methodology page for the full source-to-figure lineage.
91st percentile nationally for median household income · 31st percentile for safety (lower crime rate). Source: Census ACS 2023 / FBI UCR 2023.
Income, affordability, and safety percentile
How Walnut's home value compares nationally
Median home value vs. every US city (population 1,000+)
$972,500 3rd percentile more affordable than 3% of 15,600 US cities
Each bar is a $25K-wide band; taller bars hold more US cities. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source U.S. Census Bureau ACS 5-Year Estimates · 2023
Census ACS S1501, educational attainment
Census ACS S1701, poverty status
Census ACS S2301, share of working-age residents in the labor force
Reflects incidents reported to the FBI's Uniform Crime Reporting program — agency participation is voluntary and reporting completeness varies by jurisdiction and year, so this reflects reporting activity, not a definitive danger score. Not adjusted for tourism, commuter, or daytime population.
Annual U.S. Census Bureau Population Estimates Program (PEP) estimates, 2020–2025
Census Bureau Building Permits Survey (BPS) - annual residential permits authorized
| Year | Total |
|---|---|
| 2019 | 14 |
| 2020 | 8 |
| 2021 | 27 |
| 2022 | 94 |
| 2023 | 45 |
| 2024 | 181 |
Permit volume increased 1193% from 2019 to 2024.
How workers travel to work, Census ACS 2023
Based on 12,433 workers 16 and over.
State-average estimates for California - EIA 2023 residential energy data
Estimates reflect California state averages. Actual costs vary by home size, usage, and local rates. Source: U.S. Energy Information Administration (EIA) 2023.
Cost of living is a California state average from BEA; rent and hazard risk are county-level figures from HUD and FEMA for the county Walnut sits in
Population-matched peers from other states, closest to Walnut's 27,857 residents (Census ACS 5-Year 2023).
Median-household-income-matched peers from other states, closest to Walnut's $133,762 (Census ACS 5-Year 2023, table B19013).
City-level race and ethnicity, Census ACS 5-year 2023 (tables B02001, B03001), OMB Directive 15 categories.
Population + median household income, sourced from Census Bureau ACS 5-year B01001 (population) and B19013 (median household income).
| City | Population | Median Household Income |
|---|---|---|
| Walnut (this city) | 27,857 | $133,762 |
| Ridgecrest | 28,138 | $88,107 |
| Belmont | 27,505 | $207,609 |
| Lemon Grove | 27,489 | $79,278 |
Walnut, CA has a population of 27,857 according to U.S. Census Bureau ACS 2023 estimates.
In Walnut, the typical household earns $133,762 per year, based on Census ACS 2023 data.
BEA does not publish a city-level cost-of-living figure for Walnut; the closest available measure is the California state average, a cost of living index of 110.7 (U.S. average = 100), rated "Well Above Average" based on BEA Regional Price Parities 2024 data. Costs within California vary by metro area.
Walnut has a total crime rate of 2018.5 per 100,000 residents, which is near the national average. This reflects incidents reported to the FBI UCR program, not a definitive safety score -- agency reporting is voluntary and completeness varies by jurisdiction.
Walnut's median home value sits at $972,500, according to Census ACS 2023 estimates.
Source: U.S. Census Bureau ACS 5-Year 2023, FBI UCR, NCES CCD, Census BPS 2024, Census ACS B08301/B08136, U.S. Energy Information Administration (EIA) 2023, BEA Regional Price Parities 2024, HUD Fair Market Rents 2026, FEMA National Risk Index.
Read our methodology - how this data is sourced, computed, and verified.
Primary sources: Census ACS, FBI UCR, NOAA Climate Normals, NCES.
Every figure on PlainCities is rendered directly from Census ACS source data, no number is typed in by an editor. This page draws directly on Census ACS source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.