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ZIP Code · CA

ZIP 94403

Pop. 43,276·San Mateo County·149th most expensive ZIP in California
Median rent (all units)
$3,663/mo
Year-over-Year
+6.6%
Month-over-Month
+2.8%
vs US Median
+$1,698
Rising (Monthly)
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Most AffordableMost Expensive
ZIP 94403 · $3,663
More expensive than 96% of US ZIP codes · National median $1,965/mo
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Medians by bedroom

Rent by unit size

Studio
$3,060
1 BR
$3,670
2 BR
$4,440
3 BR
$5,670
4 BR+
$5,880
Research median
$4,440/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
$43,956/yr
At $3,663/mo median
Location
StateCA
CountySan Mateo County
Rent Market Meter
Strong Landlord's Market
Renter's MarketBalancedLandlord's Market
Rents are up 6.6% year-over-year. Expect competition, and move quickly to lock in terms.
Based on rent-price momentum (+6.6% YoY, +2.8% MoM), not inventory.
Demographics

Who lives here

ZIP 94403 (San Mateo, CA) is roughly split between renters and owners, has a median income above the national average, 60.6% of residents hold a bachelor's degree or higher.

Population
43,276
Median income
$174,917
Median age
38.9
Renters
47.5%
Age distribution
19.2%
23.1%
30.2%
16.3%
Under 1819.2%
18–3423.1%
35–5430.2%
55–6411.3%
65+16.3%
Gender
50%
50%
Male50%
Female50%
Race & ethnicity
39%
25.3%
31.3%
White39%
Black1.4%
Hispanic25.3%
Asian31.3%
Other3%
Education (25+)
20.5%
60.6%
No HS diploma7.4%
HS diploma11.5%
Some college20.5%
Bachelor's+60.6%
Housing tenure
52.5%
47.5%
Owner52.5%
Renter47.5%

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

2021 vs 2026

How ZIP 94403 in San Mateo, CA has changed in 5 years

Rent
$2,766 → $3,663
up 32.4%
Income
$151,369 → $174,917
up 15.6%
Population
44,244 → 43,276
down 2.2%
Renter share
47.7% → 47.5%
-0.2 pts
Bachelor's+
61.4% → 60.6%
-0.8 pts
Median age
38.3 → 38.9
+0.6 yrs

Compared with 2021, rent in ZIP 94403 in San Mateo, CA has increased by $897 per month, settling near $3,663 after starting the period at $2,766. Census figures show median household income at $174,917 today, compared with $151,369 five years earlier. Rent outpaced income growth by roughly 16.8 percentage points, which means renters are spending a larger slice of each paycheck on housing than they did in 2021. Headcount in the area went from 44,244 to 43,276 between 2021 and 2024, a 2.2% change. The combined trend lines point to a market that has changed measurably from where it stood in early 2021.

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Local insights

Tips for renters in ZIP 94403

About renting in ZIP 94403

Last updated: July 20, 2026

ZIP code 94403 covers San Mateo, CA. The median rent here is $3,663/mo as of July 2026. A 1-bedroom rents for a median of $3,670/mo. A 2-bedroom rents for a median of $4,440/mo.

At 25% of local median household income ($174,917/yr), ZIP 94403 ranks as affordable compared to the national benchmark of 30%. Rents have increased 6.6% over the past year.

FAQ

Frequently asked questions

How much is rent in ZIP code 94403?

As of July 20, 2026, the median monthly rent in ZIP 94403 (San Mateo, CA) is $3,663. This is based on aggregated data from public sources and community submissions.

How does ZIP 94403 rent compare to the US average?

ZIP 94403's median rent of $3,663/mo is $1,698 (86%) above the US national median of $1,965/mo.

How does ZIP 94403 compare to other ZIPs in California?

ZIP 94403 is one of the pricier ZIP codes in California, ranking #149 out of 907 ZIPs tracked at $3,663/mo.

How much income do you need to rent in ZIP 94403?

To keep rent at or below 30% of gross income, you would need to earn at least $147,000/year (~$71/hour full-time) to afford the median rent of $3,663/mo in ZIP 94403. The local median household income is $174,917/yr, meaning the typical household meets that threshold.

Is rent going up or down in ZIP 94403?

Rent in ZIP 94403 has increased 6.6% over the past year as of July 20, 2026, putting upward pressure on renter budgets.

Is ZIP 94403 an affordable place to rent?

ZIP 94403 is considered affordable for renters. At $3,663/mo, rent takes approximately 25% of the local median household income ($174,917/yr). The standard benchmark is 30%. ZIP 94403 falls comfortably within that range.

What percentage of ZIP 94403 residents rent vs. own?

According to Census data, approximately 47.5% of ZIP 94403 households are renters, while 52.5% are owner-occupied. ZIP 94403 leans toward homeownership, which can mean a smaller rental inventory.

How does ZIP 94403 compare to the rest of San Mateo?

ZIP 94403 is more affordable than San Mateo overall. At $3,663/mo, it's $4 below the San Mateo citywide median of $3,667/mo.

When was rent data for ZIP 94403 last updated?

Rent data for ZIP 94403 reflects July 20, 2026. RentDataNow refreshes all data monthly using public and private datasets.
Income Affordability
25%
AFFORDABLE

At $3,663/mo, rent takes ~25% of ZIP 94403's median household income ($174,917/yr). The standard benchmark is 30%.

ZIP 94403 25%Benchmark 30%
State income tax1–13.3%
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