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ZIP Code · CA

ZIP 94404

Pop. 35,881·San Mateo County·85th most expensive ZIP in California
Median rent (all units)
$4,138/mo
Year-over-Year
+13.7%
Month-over-Month
+3.1%
vs US Median
+$2,173
Rising (Monthly)
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Most AffordableMost Expensive
ZIP 94404 · $4,138
More expensive than 98% of US ZIP codes · National median $1,965/mo
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Medians by bedroom

Rent by unit size

Studio
$3,450
1 BR
$4,140
2 BR
$5,010
3 BR
$6,400
4 BR+
$6,630
Research median
$5,010/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: July 20, 2026

Annual cost
$49,656/yr
At $4,138/mo median
Location
StateCA
CountySan Mateo County
Rent Market Meter
Strong Landlord's Market
Renter's MarketBalancedLandlord's Market
Rents are up 13.7% year-over-year. Expect competition, and move quickly to lock in terms.
Based on rent-price momentum (+13.7% YoY, +3.1% MoM), not inventory.
Demographics

Who lives here

ZIP 94404 (Foster City, CA) is roughly split between renters and owners, has a median income above the national average, 74.3% of residents hold a bachelor's degree or higher.

Population
35,881
Median income
$192,332
Median age
39.8
Renters
48.8%
Age distribution
21.3%
19.1%
30.5%
17.8%
Under 1821.3%
18–3419.1%
35–5430.5%
55–6411.3%
65+17.8%
Gender
48.2%
51.8%
Male48.2%
Female51.8%
Race & ethnicity
31.5%
52.6%
White31.5%
Black2%
Hispanic7.4%
Asian52.6%
Other6.5%
Education (25+)
15%
74.3%
No HS diploma3.8%
HS diploma7%
Some college15%
Bachelor's+74.3%
Housing tenure
51.2%
48.8%
Owner51.2%
Renter48.8%

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

2021 vs 2026

How ZIP 94404 in Foster City, CA has changed in 5 years

Rent
$2,947 → $4,138
up 40.4%
Income
$166,203 → $192,332
up 15.7%
Population
36,571 → 35,881
down 1.9%
Renter share
46.3% → 48.8%
+2.5 pts
Bachelor's+
70.3% → 74.3%
+4.0 pts
Median age
40.3 → 39.8
-0.5 yrs

Across the past five years, the going rent in ZIP 94404 in Foster City, CA has shifted from $2,947 to $4,138, up 40.4% since 2021. Median household income climbed from $166,203 to $192,332 between 2021 and 2024, a 15.7% shift. Because rent grew faster than wages over the same span, the affordability picture has tightened relative to 2021. Census counts show ZIP 94404 in Foster City, CA losing about 690 residents over the five-year window, down 1.9% on net. The renter share has risen from 46.3% to 48.8%, with owner-occupied housing accounting for the remainder. Bachelor's-degree-or-higher attainment moved from 70.3% to 74.3% across the same window. Taken together, the five-year picture in ZIP 94404 in Foster City, CA reflects how housing costs and the people paying them have evolved through a stretch that included a pandemic, a hot rental market, and a recent cooling phase.

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Local insights

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About renting in ZIP 94404

Last updated: July 20, 2026

ZIP code 94404 covers Foster City, CA. The median rent here is $4,138/mo as of July 2026. A 1-bedroom rents for a median of $4,140/mo. A 2-bedroom rents for a median of $5,010/mo.

At 26% of local median household income ($192,332/yr), ZIP 94404 ranks as affordable compared to the national benchmark of 30%. Rents have increased 13.7% over the past year.

FAQ

Frequently asked questions

How much is rent in ZIP code 94404?

As of July 20, 2026, the median monthly rent in ZIP 94404 (Foster City, CA) is $4,138. This is based on aggregated data from public sources and community submissions.

How does ZIP 94404 rent compare to the US average?

ZIP 94404's median rent of $4,138/mo is $2,173 (111%) above the US national median of $1,965/mo.

How does ZIP 94404 compare to other ZIPs in California?

ZIP 94404 is one of the pricier ZIP codes in California, ranking #85 out of 907 ZIPs tracked at $4,138/mo.

How much income do you need to rent in ZIP 94404?

To keep rent at or below 30% of gross income, you would need to earn at least $166,000/year (~$80/hour full-time) to afford the median rent of $4,138/mo in ZIP 94404. The local median household income is $192,332/yr, meaning the typical household meets that threshold.

Is rent going up or down in ZIP 94404?

Rent in ZIP 94404 has increased 13.7% over the past year as of July 20, 2026, putting upward pressure on renter budgets.

Is ZIP 94404 an affordable place to rent?

ZIP 94404 is considered affordable for renters. At $4,138/mo, rent takes approximately 26% of the local median household income ($192,332/yr). The standard benchmark is 30%. ZIP 94404 falls comfortably within that range.

What percentage of ZIP 94404 residents rent vs. own?

According to Census data, approximately 48.8% of ZIP 94404 households are renters, while 51.2% are owner-occupied. ZIP 94404 leans toward homeownership, which can mean a smaller rental inventory.

How does ZIP 94404 compare to the rest of Foster City?

ZIP 94404 is more affordable than Foster City overall. At $4,138/mo, it's $43 below the Foster City citywide median of $4,181/mo.

When was rent data for ZIP 94404 last updated?

Rent data for ZIP 94404 reflects July 20, 2026. RentDataNow refreshes all data monthly using public and private datasets.
Income Affordability
26%
AFFORDABLE

At $4,138/mo, rent takes ~26% of ZIP 94404's median household income ($192,332/yr). The standard benchmark is 30%.

ZIP 94404 26%Benchmark 30%
State income tax1–13.3%
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Public schools near ZIP 94404 (Foster City, CA)

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