San Joaquin County, California Demographics
Population trends, housing costs, income, commuting, and health, all on one page.
San Joaquin County, 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.
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B
Health Around averageLess healthy than 70% of counties in California
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C
Income Below average
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D
Education Well below averageLess educated than 77% of counties in California
Source: Map AI Methodology
Population: density and quick facts
| Metric | San Joaquin County | California Avg | U.S. Average |
|---|---|---|---|
| Population | 797,313 | 39,245,658 | 337,468,954 |
| Population density (per sq mi) | 559.0 | 239.4 | 86.4 |
| Population growth (%/yr) | 1.37% | 0.19% | 0.59% |
| Median age | 35.7 | 35.5 | 37.3 |
| Households | 245,243 | 13,531,619 | 130,235,071 |
Population in San Joaquin County grew by 20.0% from 2009 to 2024, reaching 797,313 in 2024.
Population Growth 2009–2024
Race & Ethnicity
Age & Sex
The largest generation in San Joaquin County is Gen Z, aged 13–28, at 23.6% of residents. That is 1.8 points above California as a whole.
- Gen Z 13–28 187,882 23.6% +1.8 pts
- Millennials 29–44 176,665 22.2% -1.5 pts
- Gen X 45–60 152,378 19.1% -0.7 pts
- Boomers 61–79 104,730 13.1% -2.1 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 San Joaquin County 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 San Joaquin County
Pick an age range and a women/men split and the figure above answers with how many residents that profile reaches.
Economy
San Joaquin County has a the economy index of C, which means it is somewhat prosperous.
| Metric | San Joaquin County | California Avg | U.S. Average |
|---|---|---|---|
| Median household income | $93,025 | $99,161 | $80,455 |
| Income growth (%/yr) | 6.66% | 5.57% | 4.80% |
| Unemployment rate | 7.6% | 6.6% | 5.2% |
The median household income in San Joaquin County is about 6% lower than in California.
Housing
| Metric | San Joaquin County | California Avg | U.S. Average |
|---|---|---|---|
| Median home price | $526,211 | $650,794 | $248,835 |
| Median rent | $1,733 | $2,036 | $1,407 |
| Homeownership rate | 62.0% | 55.9% | 65.2% |
The median home price in San Joaquin County is about 25.3 years' worth of rent — buying at the median price costs roughly as much as paying the median rent of $1,733 per month for that long.
Commute Time & Mobility
Commuters in San Joaquin County spend about 46 minutes on the road round trip each working day. Over a typical 250-day work year, that adds up to roughly 193 hours, about 8.1 full days, spent commuting.
| Metric | San Joaquin County | California Avg | U.S. Average |
|---|---|---|---|
| One-way commute (min) | 23.2 | 23.5 | 22.4 |
| Round-trip commute (min) | 46.4 | 47.0 | 44.8 |
| Yearly time spent (hours) | 193 | 196 | 187 |
| Estimated yearly cost | $5,991 | $6,065 | $5,790 |
| Work from home | 10.6% | 17.2% | 15.0% |
| Highway traffic (vehicles/day) | 16,298 | 16,509 | 8,813 |
| Local road traffic (vehicles/day) | 2,414 | 2,449 | 1,355 |
Fastest commutes among counties in
California:
Inyo County (11.1 min), Mono County (12.0 min), Del Norte County (12.1 min).
Slowest:
Alpine County (31.3 min), San Benito County (31.2 min), Contra Costa County (31.0 min).
The average commute time in San Joaquin County is about the same as 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
San Joaquin County has a education index of D, which means it is barely educated.
| Metric | San Joaquin County | California Avg | U.S. Average |
|---|---|---|---|
| Bachelor's degree or higher | 18.7% | 33.0% | 31.6% |
| Average household size | 3.19 | 2.84 | 2.53 |
Highest education index among counties in
California:
Marin County (0.5), San Francisco County (0.4), Santa Clara County (0.4).
Lowest:
Colusa County (0.2), Merced County (0.2), Glenn County (0.2).
Health
San Joaquin County has a health index of B, which means it is quite healthy.
| Metric | San Joaquin County | California Avg | U.S. Average |
|---|---|---|---|
| Life expectancy (years) | 77.4 | 79.6 | 78.3 |
| Self-rated poor health | 19.4% | 16.4% | 16.3% |
| Smokers | 15.7% | 13.9% | 19.0% |
Highest health index among counties in
California:
San Francisco County (0.8), San Mateo County (0.8), Santa Clara County (0.8).
Lowest:
Lake County (0.8), Imperial County (0.8), Tulare County (0.8).
San Joaquin County, CA Compared With Nearby Counties
San Joaquin County, CA is the 4th largest of the 6 counties compared here, 797,313 residents against a local median of 1,163,035. Nothing separates San Joaquin County, CA sharply from the counties around it. Each measure below lands within 15% of the local median, close enough that the differences are within what survey sampling alone would produce.
The largest of those small differences is median home price, 9% above the local median at $526,211 against $483,427. San Joaquin County, CA has the 3rd highest median home price of the 6 areas compared here.
| Area | Population | Median household income | Median home price | Commute |
|---|---|---|---|---|
| San Joaquin County, CA | 797,313 | $93,025 #4/6 | $526,211 #3/6 | 23.2 min #3/6 |
| Stanislaus County, CA | 553,305 | $82,225 | $451,701 | 22.2 min |
| Sacramento County, CA | 1,591,938 | $92,291 | $467,586 | 23.1 min |
| Contra Costa County, CA | 1,163,035 | $127,405 | $663,272 | 31.0 min |
| Alameda County, CA | 1,648,382 | $129,593 | $833,751 | 28.3 min |
| Solano County, CA | 451,581 | $100,378 | $483,427 | 23.7 min |
Frequently Asked Questions
Common questions about San Joaquin County, California.
What is the population of San Joaquin County, California?
About 797,313 people live in San Joaquin County, California, in 245,243 households of 3.2 people on average. The median age is 35.7, so residents are younger than the U.S. median of 37.3 by about 2 years.
How densely populated is San Joaquin County, California?
Averaged over its land area, San Joaquin County, California has 559 people per square mile, a density typical of a mix of suburbs, small towns and farmland. That is about 6.5 times the U.S. average of 86.
Is San Joaquin County, California an affordable place to live?
The median home costs 5.7 times the median household income ($526,211 against $93,025), compared with 3.1 times nationally. A ratio of about 3 is traditionally considered affordable. Median rent of $1,733 a month takes about 22% of the median household's income, below the 30% level at which HUD considers renters cost-burdened.
Is unemployment high in San Joaquin County, California?
Unemployment in San Joaquin County, California is 7.6%, well above the U.S. rate of 5.2%, so job seekers may face more competition than elsewhere.
What share of adults in San Joaquin County, California have a college degree?
18.7% of adults in San Joaquin County, California hold a bachelor's degree or higher (about 1 in 5), well below the U.S. share of 31.6%.
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