San Joaquin County vs San Mateo County

A side-by-side comparison of San Joaquin County and San Mateo County: population, income, housing, and more.

San Joaquin County and San Mateo County are counties in California. This page compares them across population, income, housing, education, commuting, and how each has changed since 2019.

San Joaquin County has the higher population (787,416 vs 745,100 in San Mateo County). San Mateo County has the higher median household income ($156,000 vs $88,531 in San Joaquin County). San Mateo County has the higher median home value ($1,494,500 vs $494,500 in San Joaquin County).

Population, income & housing

	San Joaquin County	San Mateo County
Population	787,416	745,100
Median age	35.2 yrs	40.6 yrs
Median household income	$88,531	$156,000
Median home value	$494,500	$1,494,500
Median gross rent	$1,633	$2,893
Housing units	256,826	285,558
Homeownership rate	61.5%	59.1%
Bachelor's degree or higher	21.6%	53.1%
Unemployment rate	7.4%	4.5%

Trends (ACS 5-year, 2019–2023)

	San Joaquin County	San Mateo County
Population	742,603 → 787,416 (+6.0%)	767,423 → 745,100 (-2.9%)
Median household income	$64,432 → $88,531 (+37.4%)	$122,641 → $156,000 (+27.2%)
Median home value	$342,100 → $494,500 (+44.5%)	$1,089,400 → $1,494,500 (+37.2%)
Median gross rent	$1,208 → $1,633 (+35.2%)	$2,316 → $2,893 (+24.9%)

San Joaquin County

Population

742,603787,416

Median household income

$64,432$88,531

Median home value

$342,100$494,500

Median gross rent

$1,208$1,633

San Mateo County

Population

767,423745,100

Median household income

$122,641$156,000

Median home value

$1,089,400$1,494,500

Median gross rent

$2,316$2,893

Age & race/ethnicity

Age distribution (share)

	San Joaquin County	San Mateo County
Under 5	6.6%	5.2%
5 to 17	19.9%	14.7%
18 to 24	9.4%	7.2%
25 to 34	13.8%	14.4%
35 to 44	13.8%	14.6%
45 to 54	12.0%	13.6%
55 to 64	11.2%	13.1%
65 to 74	8.0%	9.8%
75 and over	5.3%	7.5%

Race & ethnicity (share)

	San Joaquin County	San Mateo County
White (non-Hispanic)	27.9%	35.8%
Black or African American	6.7%	2.1%
American Indian & Alaska Native	0.3%	0.1%
Asian	17.5%	30.5%
Native Hawaiian & Pacific Islander	0.6%	1.1%
Some other race	0.4%	0.8%
Two or more races	4.4%	4.8%
Hispanic or Latino	42.2%	24.9%

Educational attainment (age 25+)

Share of adults 25+

	San Joaquin County	San Mateo County
No high school diploma	19.6%	9.7%
High school graduate	27.8%	14.8%
Some college or associate's	31.1%	22.4%
Bachelor's degree	14.6%	29.2%
Graduate or professional degree	7.0%	23.9%

Commute to work

How workers get to work (share)

	San Joaquin County	San Mateo County
Drove alone	74.8%	57.6%
Carpooled	12.4%	8.8%
Public transit	1.1%	6.4%
Walked	1.1%	2.3%
Bicycle	0.3%	1.2%
Worked from home	9.3%	21.9%
Other means	1.0%	1.9%

Housing

Units in structure (share)

	San Joaquin County	San Mateo County
1-unit, detached	74.7%	55.3%
1-unit, attached	5.0%	8.7%
2 to 4 units	5.1%	6.5%
5 to 19 units	5.7%	11.9%
20 or more units	6.3%	16.4%
Mobile home & other	3.2%	1.2%

Poverty & households

	San Joaquin County	San Mateo County
Poverty rate	12.6%	6.5%
Average household size	3.19	2.77
Mean commute (minutes)	35	27
Median year structure built	1983	1966