Alum Rock vs San Martin

A side-by-side comparison of Alum Rock and San Martin: population, income, housing, and more.

Alum Rock and San Martin are places in California. This page compares them across population, income, housing, education, commuting, and how each has changed since 2019.

Alum Rock has the higher population (11,619 vs 7,199 in San Martin). San Martin has the higher median household income ($156,292 vs $111,976 in Alum Rock). San Martin has the higher median home value ($1,315,900 vs $880,000 in Alum Rock).

Population, income & housing

	Alum Rock	San Martin
Population	11,619	7,199
Median age	40.3 yrs	49.6 yrs
Median household income	$111,976	$156,292
Median home value	$880,000	$1,315,900
Median gross rent	$2,412	$2,332
Housing units	3,145	2,224
Homeownership rate	70.4%	74.7%
Bachelor's degree or higher	19.8%	34.2%
Unemployment rate	4.7%	4.0%

Trends (ACS 5-year, 2019–2023)

	Alum Rock	San Martin
Population	11,551 → 11,619 (+0.6%)	6,803 → 7,199 (+5.8%)
Median household income	$90,405 → $111,976 (+23.9%)	$116,172 → $156,292 (+34.5%)
Median home value	$633,800 → $880,000 (+38.8%)	$1,007,000 → $1,315,900 (+30.7%)
Median gross rent	$1,832 → $2,412 (+31.7%)	$1,482 → $2,332 (+57.4%)

Alum Rock

Population

11,55111,619

Median household income

$90,405$111,976

Median home value

$633,800$880,000

Median gross rent

$1,832$2,412

San Martin

Population

6,8037,199

Median household income

$116,172$156,292

Median home value

$1,007,000$1,315,900

Median gross rent

$1,482$2,332

Age & race/ethnicity

Age distribution (share)

	Alum Rock	San Martin
Under 5	4.5%	5.2%
5 to 17	13.3%	12.4%
18 to 24	11.7%	6.3%
25 to 34	12.3%	9.9%
35 to 44	14.7%	12.0%
45 to 54	15.3%	14.2%
55 to 64	11.6%	19.5%
65 to 74	10.7%	14.2%
75 and over	5.9%	6.2%

Race & ethnicity (share)

	Alum Rock	San Martin
White (non-Hispanic)	10.2%	44.7%
Black or African American	0.3%	1.8%
American Indian & Alaska Native	0.1%	0.1%
Asian	20.6%	6.3%
Native Hawaiian & Pacific Islander	0.3%	0.0%
Some other race	0.3%	0.0%
Two or more races	0.3%	3.3%
Hispanic or Latino	67.9%	43.7%

Educational attainment (age 25+)

Share of adults 25+

	Alum Rock	San Martin
No high school diploma	33.2%	9.6%
High school graduate	27.7%	26.4%
Some college or associate's	19.3%	29.8%
Bachelor's degree	13.8%	23.7%
Graduate or professional degree	6.0%	10.5%

Commute to work

How workers get to work (share)

	Alum Rock	San Martin
Drove alone	79.2%	58.5%
Carpooled	12.5%	7.8%
Public transit	0.4%	2.0%
Walked	0.9%	6.7%
Bicycle	0.0%	0.0%
Worked from home	6.1%	24.7%
Other means	0.9%	0.4%

Housing

Units in structure (share)

	Alum Rock	San Martin
1-unit, detached	89.6%	88.4%
1-unit, attached	8.1%	5.9%
2 to 4 units	0.2%	0.0%
5 to 19 units	0.0%	0.5%
20 or more units	0.9%	0.4%
Mobile home & other	1.1%	4.8%

Poverty & households

	Alum Rock	San Martin
Poverty rate	8.7%	6.5%
Average household size	3.89	3.24
Mean commute (minutes)	30	38
Median year structure built	1953	1974