San Dimas, California Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates
The population of San Dimas, California is 34,099 as of the 2023 American Community Survey, making it the 244th-largest city in California. The median household income is $105,833, the median home value is $756,200, and the median age is 42.8.
The population has declined 0.5% since 2010 (33,377 → 33,226).
34,099
Population
2268
People / sq mi
$105,833
Median Income
$756,200
Median Home Value
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San Dimas covers 15.0 sq mi of land at 2268 people per square mile.
About San Dimas, CA
In San Dimas, home values do the distinguishing — a median of $756,200. San Dimas is a city in California with a population of 34,099.
The typical household earns $105,833 a year, above the US median of $78,538. About 6.2% of residents live below the federal poverty level, below the national 12.4%. Home prices are steep, with the typical property valued at $756,200, with typical rent around $2,232.
Roughly 40.3% of adults have a bachelor’s, above the national 35.0%. About 15.3% of the workforce is home-based, above the national 14.0%, and the average commute runs about 32 minutes each way.
High housing values reframe the income picture in San Dimas — even solid earnings stretch less against home prices and rents at this level.
San Dimas city Population History (2010-2024)
The city of San Dimas city had a population of 33,377 in 2010 and 33,226 in 2024, a -0.5% growth over 14 years. The peak was 34,795 in 2020. Average annual growth rate: -0.02%.
33,226
Population (2024)
33,377
Population (2010)
34,795
Peak (2020)
-0.02%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 33,377 |
| 2011 | 33,509 |
| 2012 | 33,637 |
| 2013 | 33,745 |
| 2014 | 34,319 |
| 2015 | 34,344 |
| 2016 | 34,236 |
| 2017 | 34,128 |
| 2018 | 33,881 |
| 2019 | 33,621 |
| 2020 | 34,795 |
| 2021 | 34,077 |
| 2022 | 33,612 |
| 2023 | 33,337 |
| 2024 | 33,226 |
Race & Ethnicity
| White | 46.2% |
| Black or African American | 3.4% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 3.2% |
| Two or More Races | 0.2% |
Economy & Income
$105,833
Median Household Income
$49,568
Per Capita Income
6.2%
Poverty Rate
3.1%
Unemployment Rate
Housing
$756,200
Median Home Value
$2,232
Median Rent
71.4%
Owner-Occupied
Education
92.8%
High School+
40.3%
Bachelor's+
Commute
0.8%
Drive Alone
71.6%
Public Transit
15.3%
Work From Home
31.9 min
Avg Commute
Community Profile
12.4%
Foreign Born
63.7%
Non-English at Home
4.8%
Veterans
14.5%
With Disability
93.8%
Health Insurance
94.9%
Internet Access
Employment by Industry
| Professional, Scientific & Management | 25.7% |
| Manufacturing | 10.2% |
| Finance, Insurance & Real Estate | 9.8% |
| Construction | 8.0% |
| Information | 6.8% |
| Education, Health Care & Social Services | 6.7% |
| Public Administration | 6.4% |
| Arts, Entertainment & Food Services | 5.5% |
| Retail Trade | 4.4% |
| Transportation & Warehousing | 2.7% |
| Agriculture & Mining | 0.3% |
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Frequently Asked Questions
San Dimas, California has a population of 34,099 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 244th-largest city in California.
The median household income in San Dimas, California is $105,833, with 6.2% of residents living below the federal poverty level.
The median home value in San Dimas, California is $756,200, with median monthly rent at $2,232 and a homeownership rate of 71.4%.
The median age in San Dimas, California is 42.8 years. The population is 47.9% male and 52.1% female.
The population has declined 0.5% since 2010 (33,377 → 33,226).
San Dimas city, CA Climate
San Dimas city, CA has an average annual temperature of 17.4°C (63°F) and receives about 419 mm of precipitation per year. The warmest month is August and the coldest is December. Figures are 1970–2000 climate normals.
17.4°C
Avg Temp
419
Precip (mm/yr)
Aug
Hottest Month
Dec
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | 12° / 53° | 85 mm |
| February | 13° / 55° | 88 mm |
| March | 13° / 56° | 77 mm |
| April | 16° / 60° | 30 mm |
| May | 18° / 64° | 7 mm |
| June | 21° / 69° | 1 mm |
| July | 24° / 75° | 1 mm |
| August | 24° / 76° | 4 mm |
| September | 23° / 73° | 9 mm |
| October | 19° / 66° | 11 mm |
| November | 15° / 59° | 48 mm |
| December | 12° / 53° | 58 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit San Dimas city, CA
The most comfortable months to visit San Dimas city, CA are typically June, September and October, when temperatures are mildest and rainfall is relatively low. The hottest month is August (around 32°C high). The coldest is December (near 5°C low). February is usually the wettest month.
Where to stay near San Dimas
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.