ZIP Code · CA

ZIP 94030

Part of Millbrae, CA

Pop. 22,689·San Mateo County·96th most expensive ZIP in California

Median rent (all units)

$4,081/mo

Year-over-Year

+18.5%

Month-over-Month

+3.0%

vs US Median

+$2,149

Reported rents

Rising (Monthly)

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Most AffordableMost Expensive

ZIP 94030 · $4,081

More expensive than 98% of US ZIP codes · National median $1,932/mo

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Medians by bedroom

Rent by unit size

Studio

$3,020

1 BR

$3,620

2 BR

$4,380

3 BR

$5,590

4 BR+

$5,800

Research median

$4,380/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

Cheapest month to sign

November. Asking rents in ZIP 94030 usually run 1.4% below trend in November and 1.1% above it in May, about $102 a month apart at today's median. Based on 6 years of data.

Compared with the peak

Rent in ZIP 94030 is at its highest level since Zillow's records here began in July 2019.

Past year vs. the rest of California

Rent in ZIP 94030 changed +18.5% over the year to September 2026. Across the 819 California ZIP codes Zillow tracks, the typical change was +3.2%.

Since before the pandemic

Rent in ZIP 94030 is 28.8% higher than in March 2020. Across the US, rent is up 37.3% over the same stretch.

Recent direction

Rent has risen 6 months in a row, and rose in 11 of the last 12 months.

What a typical income covers

30% of the median household income ($163,476) is $4,087 a month. That covers HUD's Fair Market Rent for up to a 1-bedroom ($3,620); a 2-bedroom is $4,380.

Cheaper nearby

ZIP 94066, 2 miles away, rents for 18% less ($3,358/mo), about $8,700 a year in savings.

From Zillow's monthly rent index (ZORI) for ZIP 94030. The seasonal pattern compares Zillow’s seasonally adjusted and unadjusted series. Income is the Census median household income (5-year estimates). Fair Market Rents are HUD’s, which include utilities.

Annual cost

$48,972/yr

At $4,081/mo median

Location

CityMillbrae

StateCA

CountySan Mateo County

Rent Market Meter

Strong Landlord's Market

Renter's MarketBalancedLandlord's Market

Rents are up 18.5% year-over-year. Expect competition, and move quickly to lock in terms.

Based on rent-price momentum (+18.5% YoY, +3.0% MoM), not inventory.

Demographics

Who lives here

ZIP 94030 (Millbrae, CA) is majority owner-occupied, has a large retiree population, has a median income above the national average, 52.7% of residents hold a bachelor's degree or higher.

Population

22,689

Median income

$163,476

Median age

43.7

Renters

39.2%

Age distribution

19%

18.5%

27.3%

14.9%

20.3%

Under 1819%

18–3418.5%

35–5427.3%

55–6414.9%

65+20.3%

Gender

48.4%

51.6%

Male48.4%

Female51.6%

Race & ethnicity

30.7%

13.9%

48.2%

White30.7%

Black0.9%

Hispanic13.9%

Asian48.2%

Other6.4%

Education (25+)

16.3%

24.7%

52.7%

No HS diploma6.4%

HS diploma16.3%

Some college24.7%

Bachelor's+52.7%

Housing tenure

60.8%

39.2%

Owner60.8%

Renter39.2%

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

2021 vs 2026

How ZIP 94030 in Millbrae, CA has changed in 5 years

Rent

$2,944 → $4,081

up 38.6%

Income

$141,399 → $163,476

up 15.6%

Population

23,083 → 22,689

down 1.7%

Renter share

37% → 39.2%

+2.2 pts

Bachelor's+

51.2% → 52.7%

+1.5 pts

Median age

44.9 → 43.7

-1.2 yrs

Since 2021, the typical rent in ZIP 94030 in Millbrae, CA has climbed from $2,944 to $4,081, a 38.6% change over five years. Census figures show median household income at $163,476 today, compared with $141,399 five years earlier. That spread, with rent up faster than earnings, points to a tougher affordability environment than five years ago. The population has contracted by 1.7% since 2021, moving from about 23,083 residents to roughly 22,689. Renters now make up 39.2% of households, compared with 37% five years ago. The combined trend lines point to a market that has changed measurably from where it stood in early 2021.

Community

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Local insights

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About renting in ZIP 94030

Last updated: October 17, 2026

ZIP code 94030 covers Millbrae, CA. The median rent here is $4,081/mo as of October 2026. A 1-bedroom rents for a median of $3,620/mo. A 2-bedroom rents for a median of $4,380/mo.

At 30% of local median household income ($163,476/yr), ZIP 94030 ranks as moderate compared to the national benchmark of 30%. Rents have increased 18.5% over the past year.

FAQ

Frequently asked questions

How much income do you need to rent in ZIP 94030?

To keep rent at or below 30% of gross income, you would need to earn at least $163,000/year (about $78/hour full-time) to afford the median rent of $4,081/mo in ZIP 94030. The local median household income is $163,476/yr, so the typical household meets that bar.

Is rent going up or down in ZIP 94030?

Rent in ZIP 94030 has risen 18.5% over the past year as of September 2026. That is the highest level since Zillow's records here began in July 2019.

When is the cheapest time to rent in ZIP 94030?

Asking rents in ZIP 94030 are usually lowest in November, about 1.4% below their yearly trend, and highest in May, about 1.1% above it. At today's median that is a gap of roughly $102 a month. This pattern comes from 6 years of Zillow rent data.

How does ZIP 94030 compare to other ZIPs in California?

ZIP 94030 is one of the pricier among California ZIP codes for rent, ranking #96 of 898 at $4,081/mo. Over the year to September 2026, rent in ZIP 94030 changed +18.5%, against a typical +3.2% across the 819 California ZIP codes Zillow tracks.