Housing data for Alum Rock, CA
Alum Rock, CA has an estimated 10,440 residents and 2,896 homes (US Census Bureau, 2020–2024 American Community Survey).
It is an unincorporated community in Santa Clara County.
29.8% of households rent.
The median gross rent is $2,389 a month.
Figures last updated on .
- Residents
- 10,440 (±1,158)
- Housing units
- 2,896 (±267)
- Households that rent
- 29.8%
- Median gross rent
- $2,389
- Residents since 2015–2019
- −9.6%
What stands out in Alum Rock
Homes in buildings of 5 or more units: 1.6% (±3.1 points) in Alum Rock, lower than in Santa Clara County (28.6%).
Working from home: 7.7% (±2.7 points) in Alum Rock, lower than in Santa Clara County (23.9%).
Median home value: $909,500 (±$39,854) in Alum Rock, lower than in Santa Clara County ($1,490,600).
Households that moved in since 2020: 13.6% (±4.8 points) in Alum Rock, lower than in Santa Clara County (27.9%).
- Types of homes in Alum Rock
- Commute and cars in Alum Rock
- Home values in Alum Rock
- How long people stay in Alum Rock
Housing in Alum Rock at a glance
- Median rent: $2,389 median gross rent a month
- Rent by bedrooms: $2,528 median gross rent, 2 bedrooms
- Rent burden: 52.2% of renters pay 30% or more of income
- Renters and owners: 29.8% of households rent
- Income and affordability: $126,705 median household income
- Home values: $909,500 median home value
- Homeowner costs: $3,005 median monthly cost with a mortgage
- Property taxes: $6,036 median real estate taxes a year
- Types of homes: 1.6% of homes are in buildings of 5 or more units
- Bedrooms: 72.2% of homes have 3 or more bedrooms
- Age of homes: 90.2% of homes were built before 1980
- Vacancy rate: 3.5% rental vacancy rate
- Heating fuel: 63.1% heat with utility gas
- Commute and cars: 27.9 minutes average trip to work
- Growth: −9.6% residents since 2015–2019
- How long people stay: 13.6% moved in since 2020
- Crowding and facilities: 18.0% of homes have more than 1 person per room
Alum Rock against Santa Clara County, its state and the nation
| Alum Rock | Santa Clara County | California | United States | |
|---|---|---|---|---|
| Residents | 10,440 (±1,158) | 1,902,047 (exact) | 39,287,377 (exact) | 334,922,499 |
| Housing units | 2,896 (±267) | 698,837 (±290) | 14,644,735 (±1,665) | 143,775,355 |
| Households that rent | 29.8% (±6.4 points) | 44.9% (±0.5 points) | 44.1% (±0.2 points) | 34.8% |
| Median gross rent | $2,389 (±$170) | $2,857 (±$19) | $2,036 (±$5) | $1,413 |
| Median household income | $126,705 (±$23,062) | $164,281 (±$1,955) | $99,122 (±$310) | $80,734 |
| Median home value | $909,500 (±$39,854) | $1,490,600 (±$14,163) | $734,700 (±$1,307) | $332,700 |
| Median real estate taxes (a year) | $6,036 (±$1,021) | $10,000 or more | $5,124 (±$17) | $3,119 |
| Built before 1980 | 90.2% (±11.7 points) | 59.7% (±0.6 points) | 56.0% (±0.2 points) | 49.7% |
| Average commute | 27.9 minutes (±2.2) | 26.2 minutes (±0.2) | 28.7 minutes (±0.1) | 26.4 minutes |
| Households with broadband | 88.8% (±4.6 points) | 95.6% (±0.2 points) | 93.5% (±0.1 points) | 91.0% |
| Median age of residents | 41.0 years (±3.1) | 38.1 years (±0.1) | 37.9 years (±0.1) | 38.9 years |
Alum Rock covers 0.9 square miles of land, about 12,014 residents per square mile (Census Bureau Gazetteer).
How Alum Rock has changed since 2015–2019
| 2015–2019 | 2020–2024 | Amount of change | Verdict | |
|---|---|---|---|---|
| Residents | 11,551 (±1,048) | 10,440 (±1,158) | −9.6% | Not a measurable change |
| Housing units | 2,730 (±175) | 2,896 (±267) | +6.1% | Not a measurable change |
| Median gross rent | $1,832 (±$197) | $2,389 (±$170) | +30.4% | No measurable change after inflation |
| Median home value | $633,800 (±$22,349) | $909,500 (±$39,854) | +43.5% | Up after inflation |
| Median household income | $90,405 (±$9,329) | $126,705 (±$23,062) | +40.2% | No measurable change after inflation |
| Median owner cost with a mortgage | $2,486 (±$179) | $3,005 (±$365) | +20.9% | No measurable change after inflation |
| Median real estate taxes | $5,322 (±$682) | $6,036 (±$1,021) | +13.4% | No measurable change after inflation |
| Households that rent | 27.9% (±4.5 points) | 29.8% (±6.4 points) | +1.9 percentage points | Not a measurable change |
| Rental vacancy rate | 0.0% (±4.6 points) | 3.5% (±3.4 points) | +3.5 percentage points | Not a measurable change |
The Census Bureau publishes 2015–2019 dollars in 2019 dollars and 2020–2024 dollars in 2024 dollars.
Prices (the CPI-U, US Bureau of Labor Statistics) rose 22.7% between 2019 and 2024, so a dollar figure’s verdict compares the two after raising the earlier one by that much, using the Census Bureau’s test for a difference.
The two periods do not overlap, as the Census Bureau recommends for 5-year estimates.
Crime reported to police in Santa Clara County
Alum Rock has no police department of its own in the FBI’s figures, so this is the figure for Santa Clara County as a whole.
In 2025, the police departments that report for Santa Clara County recorded 357 violent and 2,219 property crimes per 100,000 residents.
A county-wide figure describes the whole county, not this place; crime varies from one community to the next.
Places near Alum Rock
| Place | Distance | Median gross rent | Median home value | Households that rent |
|---|---|---|---|---|
| East Foothills | 1.1 mi | $3,321 | $1,346,100 | 13.7% |
| San Jose | 5.1 mi | $2,669 | $1,233,200 | 44.2% |
| Milpitas | 5.7 mi | $3,120 | $1,251,700 | 41.6% |
| Burbank (community) | 6.8 mi | $2,566 | $1,104,600 | 42.3% |
| Santa Clara | 7.9 mi | $3,016 | $1,582,600 | 59.2% |
| Campbell | 9.4 mi | $2,737 | $1,617,000 | 48.3% |
| Cambrian Park | 9.7 mi | $3,179 | $2,000,000 or more | 29.6% |
| Fremont | 11 mi | $2,933 | $1,403,800 | 39.2% |
Places in California most like Alum Rock
| Place | Median gross rent | Median home value | Median household income | Households that rent |
|---|---|---|---|---|
| Altadena | $2,355 | $1,120,000 | $128,720 | 23.1% |
| Felton | $2,068 | $900,500 | $123,056 | 23.5% |
| North El Monte | $2,366 | $863,400 | $99,447 | 35.9% |
| Ben Lomond | $2,514 | $960,700 | $130,041 | 23.2% |
| Mayflower Village | $2,243 | $889,200 | $105,242 | 26.9% |
| East Pasadena | $2,229 | $1,069,200 | $109,136 | 27.6% |
Matched on rent, home value, income, the share who rent, the age of the homes, the share in apartment buildings and the commute, each measured against the spread across California.
HUD Fair Market Rent for Alum Rock, fiscal year 2027
| Studio | 1 bedroom | 2 bedrooms | 3 bedrooms | 4 bedrooms |
|---|---|---|---|---|
| $2,458 | $2,778 | $3,272 | $4,396 | $4,688 |
HUD income limits for Alum Rock, fiscal year 2026
| Household size | Extremely low (30%) | Very low (50%) | Low (80%) |
|---|---|---|---|
| 1 person | $43,200 | $71,950 | $113,700 |
| 2 people | $49,350 | $82,200 | $129,950 |
| 3 people | $55,500 | $92,500 | $146,200 |
| 4 people | $61,650 | $102,750 | $162,400 |
| 5 people | $66,600 | $111,000 | $175,400 |
| 6 people | $71,550 | $119,200 | $188,400 |
| 7 people | $76,450 | $127,450 | $201,400 |
| 8 people | $81,400 | $135,650 | $214,400 |
These are the limits HUD sets for its housing programs in the San Jose-Sunnyvale-Santa Clara, CA HUD Metro FMR Area, where HUD’s median family income for fiscal year 2026 is $205,500.
A program can use its own limits; tax-credit and local programs often do.
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
What is the average rent in Alum Rock, CA?
The Census Bureau publishes the median rather than the average: the median gross rent in Alum Rock is $2,389 (±$170) a month (2020–2024 American Community Survey), so half of renting households pay less and half pay more.
How much is a one-bedroom apartment in Alum Rock?
The median gross rent for a one-bedroom home in Alum Rock, CA is $967 (±$90) a month (2020–2024 American Community Survey).
Are renters in Alum Rock rent-burdened?
52.2% of renting households in Alum Rock pay 30% or more of their income in gross rent, the share housing researchers usually call rent-burdened (2020–2024 American Community Survey).
How many renters are there in Alum Rock?
Alum Rock has an estimated 789 (±179) renting households, 29.8% of its occupied homes (2020–2024 American Community Survey).
What is the median household income in Alum Rock?
The median household income in Alum Rock is $126,705 (±$23,062) a year (2020–2024 American Community Survey).
What is the average home value in Alum Rock, CA?
The Census Bureau publishes the median: $909,500 (±$39,854) for owner-occupied homes in Alum Rock (2020–2024 American Community Survey).
Is Alum Rock growing?
In Alum Rock, the number of residents went from 11,551 in 2015–2019 to 10,440 in 2020–2024 (−9.6%), not a measurable change.
Sources
- Demographic and Housing Estimates (DP05), 2020–2024 ACS 5-year estimates — Alum Rock CDP, California
- Selected Housing Characteristics (DP04), 2020–2024 ACS 5-year estimates — Alum Rock CDP, California
- Selected Economic Characteristics (DP03), 2020–2024 ACS 5-year estimates — Alum Rock CDP, California
- Median Real Estate Taxes Paid by Mortgage Status (B25103), 2020–2024 ACS 5-year estimates — Alum Rock CDP, California
- Selected Social Characteristics (DP02), 2020–2024 ACS 5-year estimates — Alum Rock CDP, California
- Total Population (B01003), 2015–2019 ACS 5-year estimates — Alum Rock CDP, California
- Median Gross Rent (B25064), 2015–2019 ACS 5-year estimates — Alum Rock CDP, California
- HUD Fair Market Rents, fiscal year 2027: San Jose-Sunnyvale-Santa Clara, CA HUD Metro FMR Area
- HUD Small Area Fair Market Rents, fiscal year 2027
- HUD Income Limits, fiscal year 2026: San Jose-Sunnyvale-Santa Clara, CA HUD Metro FMR Area
- Consumer Price Index for All Urban Consumers (CPI-U), US city average, all items, US Bureau of Labor Statistics: annual averages 2019 and 2024
- US Census Bureau, 2024 Gazetteer Files
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 B01003_001E, B01003_001M, B25064_001E, B25064_001M from the 2019 release.
The API needs a free key.
DP05_0001E, DP05_0001M, DP04_0001E, DP04_0001M, DP04_0047PE, DP04_0047PM, DP04_0134E, DP04_0134M, DP03_0062E, DP03_0062M, DP04_0089E, DP04_0089M
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.
Figures last updated on .