ZIP Code · CA

ZIP 91001

Part of Altadena, CA

Pop. 35,475·Los Angeles County·128th most expensive ZIP in California

Median rent (all units)

$3,833/mo

Year-over-Year

+3.5%

Month-over-Month

+0.8%

vs US Median

+$1,901

Reported rents

Rising (Monthly)

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Most AffordableMost Expensive

ZIP 91001 · $3,833

More expensive than 97% of US ZIP codes · National median $1,932/mo

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Compare your rent to the local median.

Medians by bedroom

Rent by unit size

Studio

$2,160

1 BR

$2,410

2 BR

$3,010

3 BR

$3,820

4 BR+

$4,250

Research median

$3,010/mo

Bedroom estimates are gross rents that include essential utilities (electricity, water, gas, sewer, trash).

Rent trends

12-month history

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Last updated: October 17, 2026

From the history

What the numbers show

Past year vs. the rest of California

Rent in ZIP 91001 changed +3.5% over the year to September 2026. Across the 819 California ZIP codes Zillow tracks, the typical change was +3.2%.

Recent direction

Rent rose in 7 of the last 12 months.

What a typical income covers

30% of the median household income ($134,903) is $3,373 a month. That covers HUD's Fair Market Rent for up to a 2-bedroom ($3,010); a 3-bedroom is $3,820.

Cheaper nearby

ZIP 91104, 2 miles away, rents for 29% less ($2,722/mo), about $13,300 a year in savings.

From Zillow's monthly rent index (ZORI) for ZIP 91001. Income is the Census median household income (5-year estimates). Fair Market Rents are HUD’s, which include utilities.

Annual cost

$45,996/yr

At $3,833/mo median

Location

CityAltadena

StateCA

CountyLos Angeles County

Rent Market Meter

Landlord's Market

Renter's MarketBalancedLandlord's Market

Rents are climbing (3.5% YoY), so leverage tilts toward landlords. Act sooner rather than later.

Based on rent-price momentum (+3.5% YoY, +0.8% MoM), not inventory.

Demographics

Who lives here

ZIP 91001 (Altadena, CA) is majority owner-occupied, has a large retiree population, has a median income above the national average, 53.9% of residents hold a bachelor's degree or higher.

Population

35,475

Median income

$134,903

Median age

46.3

Renters

20.1%

Age distribution

19.6%

15.7%

27.4%

15.2%

22%

Under 1819.6%

18–3415.7%

35–5427.4%

55–6415.2%

65+22%

Gender

48.6%

51.4%

Male48.6%

Female51.4%

Race & ethnicity

39%

20.3%

28.6%

White39%

Black20.3%

Hispanic28.6%

Asian6.5%

Other5.6%

Education (25+)

14%

24.3%

53.9%

No HS diploma7.9%

HS diploma14%

Some college24.3%

Bachelor's+53.9%

Housing tenure

79.9%

20.1%

Owner79.9%

Renter20.1%

Source: U.S. Census Bureau · ACS 2024 5-Year Estimates

2021 vs 2026

How ZIP 91001 in Altadena, CA has changed in 5 years

Income

$114,668 → $134,903

up 17.6%

Population

36,867 → 35,475

down 3.8%

Renter share

22.5% → 20.1%

-2.4 pts

Bachelor's+

47.6% → 53.9%

+6.3 pts

Median age

44.6 → 46.3

+1.7 yrs

On the earnings side, the typical household in ZIP 91001 in Altadena, CA now reports about $134,903, up from $114,668 in 2021. Census counts show ZIP 91001 in Altadena, CA losing about 1,392 residents over the five-year window, down 3.8% on net. The renter share has eased from 22.5% to 20.1%, with owner-occupied housing accounting for the remainder. Bachelor's-degree-or-higher attainment moved from 47.6% to 53.9% across the same window.

Community

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Local insights

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About renting in ZIP 91001

Last updated: October 17, 2026

ZIP code 91001 covers Altadena, CA. The median rent here is $3,833/mo as of October 2026. A 1-bedroom rents for a median of $2,410/mo. A 2-bedroom rents for a median of $3,010/mo.

At 34% of local median household income ($134,903/yr), ZIP 91001 ranks as moderate compared to the national benchmark of 30%. Rents have increased 3.5% over the past year.

FAQ

Frequently asked questions

How much income do you need to rent in ZIP 91001?

To keep rent at or below 30% of gross income, you would need to earn at least $153,000/year (about $74/hour full-time) to afford the median rent of $3,833/mo in ZIP 91001. The local median household income is $134,903/yr, so the typical household falls short of that bar.

Is rent going up or down in ZIP 91001?

Rent in ZIP 91001 has risen 3.5% over the past year.

How does ZIP 91001 compare to other ZIPs in California?

ZIP 91001 is one of the pricier among California ZIP codes for rent, ranking #128 of 898 at $3,833/mo. Over the year to September 2026, rent in ZIP 91001 changed +3.5%, against a typical +3.2% across the 819 California ZIP codes Zillow tracks.