What is the rental vacancy rate in Alum Rock, CA?

Name: Vacancy rate in Alum Rock, CA, 2020–2024
Creator: US Census Bureau
License: https://www.census.gov/data/developers/about/terms-of-service.html

The rental vacancy rate in Alum Rock, CA is 3.5% (±3.4 points) (2020–2024 American Community Survey).

The homeowner vacancy rate is 0.0% (±2.2 points).

248 (±119) homes, 8.6% of all housing units, were vacant, a count that includes seasonal homes and homes being sold or rented.

In Alum Rock, the rental vacancy rate went from 0.0% in 2015–2019 to 3.5% in 2020–2024 (+3.5 percentage points), not a measurable change.

Figures last updated on November 12, 2026.

Rental vacancy rate: 3.5% (±3.4 points)
Homeowner vacancy rate: 0.0% (±2.2 points)
Vacant homes: 248 (±119)

Vacancy in Alum Rock against Santa Clara County, its state and the nation

Estimate (90% margin of error)
	Alum Rock	Santa Clara County	California	United States
Rental vacancy rate	3.5% (±3.4 points)	5.1% (±0.4 points)	4.2% (±0.1 points)	5.5%
Homeowner vacancy rate	0.0% (±2.2 points)	0.7% (±0.1 points)	0.8% (±0.1 points)	0.9%
Vacant housing units	248 (±119)	39,484 (±1,910)	1,096,644 (±18,928)	14,547,859

The rental vacancy rate is the share of rental homes that are vacant and for rent; it leaves out homes already rented but not yet moved into, and seasonal homes.

In Alum Rock, the rental vacancy rate is not measurably different from Santa Clara County (5.1%).

It is not measurably different from California (4.2%).

It is not measurably different from the national figure (5.5%).

Rental vacancy rate in places near Alum Rock

Nearest places with a published estimate, compared with Alum Rock
Place	Distance	Rental vacancy rate	Compared with this place
Alum Rock	—	3.5% (±3.4 points)	—
East Foothills	1.1 mi	8.0% (±12.2 points)	Not measurably different
San Jose	5.1 mi	4.8% (±0.4 points)	Not measurably different
Milpitas	5.7 mi	3.7% (±2.2 points)	Not measurably different
Burbank (community)	6.8 mi	8.4% (±8.0 points)	Not measurably different
Santa Clara	7.9 mi	5.8% (±1.3 points)	Not measurably different
Campbell	9.4 mi	3.6% (±1.7 points)	Not measurably different
Cambrian Park	9.7 mi	0.0% (±11.0 points)	Not measurably different
Fremont	11 mi	4.8% (±1.1 points)	Not measurably different

None of the nearby places differs measurably from this one on this figure.

Distance is measured in a straight line between the Census Bureau’s internal points for each place.

Rental vacancy rate across Santa Clara County, place by place

Rank	Place	Rental vacancy rate
9 (tie)	Santa Clara	5.8% (±1.3 points)
11	Cupertino	5.0% (±2.5 points)
12	San Jose	4.8% (±0.4 points)
13	Los Altos	4.6% (±3.5 points)
14	Milpitas	3.7% (±2.2 points)
15	Campbell	3.6% (±1.7 points)
16	Alum Rock	3.5% (±3.4 points)
17	Sunnyvale	3.2% (±0.8 points)
18	Gilroy	1.6% (±1.3 points)
19	Saratoga	0.6% (±1.0 points)
20 (tie)	Los Altos Hills	0.0% (±19.1 points)
20 (tie)	Cambrian Park	0.0% (±11.0 points)
20 (tie)	Lexington Hills	0.0% (±27.0 points)

Showing 13 of 23 places in Santa Clara County, ranked from highest to lowest.

Alum Rock is a census-designated place: an unincorporated community the Census Bureau draws for statistics, with no municipal government of its own.

Survey years: 2020–2024 (American Community Survey 5-year estimates), compared with 2015–2019.

Margins of error are at the 90% confidence level.

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Questions about Alum Rock

Is it hard to find a rental in Alum Rock?

The rental vacancy rate in Alum Rock, CA is 3.5% (±3.4 points); a low rate means few rental homes stand empty and for rent at any time, which usually means more competition for each one.

Is the rental market in Alum Rock tighter than it was?

In Alum Rock, the rental vacancy rate went from 0.0% in 2015–2019 to 3.5% in 2020–2024 (+3.5 percentage points), not a measurable change.

How many homes are vacant in Alum Rock?

An estimated 248 (±119) housing units, 8.6% of the total, including seasonal homes and homes waiting to be sold or rented.

Sources

To check these figures in the Census Bureau’s own API, request the variables below from the 2024 ACS 5-year data profile (acs/acs5/profile) for Alum Rock CDP, California (place:01458, in state:06).

Each estimate (E or PE) has a margin of error beside it (M or PM).

The 2015–2019 figures are DP04_0005E, DP04_0005M from the 2019 release.

The API needs a free key.

Request a Census API key.

DP04_0005E, DP04_0005M, DP04_0004E, DP04_0004M, DP04_0003E, DP04_0003M, DP04_0003PE, DP04_0003PM

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.

Figures are published by the US Census Bureau, HUD, the Bureau of Labor Statistics and the FBI; Seayora reproduces them and does not adjust them, except where a sentence says it compares dollar figures after inflation. They describe the whole place, not any one building or street, and are not an appraisal, a rent determination, a tax bill, a safety rating or legal advice.