ZIP Code · CA

ZIP 94509

Part of Antioch, CA

Pop. 70,090·Contra Costa County·688th most expensive ZIP in California

Median rent (all units)

$2,348/mo

Year-over-Year

+0.4%

Month-over-Month

-0.1%

vs US Median

+$416

Reported rents

Stable (Monthly)

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Most AffordableMost Expensive

ZIP 94509 · $2,348

More expensive than 75% of US ZIP codes · National median $1,932/mo

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Medians by bedroom

Rent by unit size

Studio

$1,750

1 BR

$1,990

2 BR

$2,420

3 BR

$3,090

4 BR+

$3,670

Research median

$2,420/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

December. Asking rents in ZIP 94509 usually run 0.7% below trend in December and 0.6% above it in May, about $31 a month apart at today's median. Based on 11 years of data.

Compared with the peak

Rent in ZIP 94509 is 0.6% below its high of $2,362 in February 2026, at $2,348 as of September 2026.

Past year vs. the rest of California

Rent in ZIP 94509 changed +0.4% over the year to September 2026. Across the 819 California ZIP codes Zillow tracks, the typical change was +3.2%.

Rent vs. income since 2019

From 2019 to 2024, rent in ZIP 94509 rose 27.5% while median household income rose 33.6% ($64,502 to $86,196). Income kept ahead of rent.

Since before the pandemic

Rent in ZIP 94509 is 26% higher than in March 2020. Across the US, rent is up 37.3% over the same stretch.

Recent direction

Rent has fallen 2 months in a row, and rose in 5 of the last 12 months.

What a typical income covers

30% of the median household income ($86,196) is $2,155 a month. That covers HUD's Fair Market Rent for up to a 1-bedroom ($1,990); a 2-bedroom is $2,420.

From Zillow's monthly rent index (ZORI) for ZIP 94509. 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

$28,176/yr

At $2,348/mo median

Location

CityAntioch

StateCA

CountyContra Costa County

Rent Market Meter

Balanced Market

Renter's MarketBalancedLandlord's Market

Rents are roughly steady, with neither renters nor landlords holding a strong edge right now.

Based on rent-price momentum (+0.4% YoY, -0.1% MoM), not inventory.

Demographics

Who lives here

ZIP 94509 (Antioch, CA) is majority owner-occupied, 18.3% of residents hold a bachelor's degree or higher.

Population

70,090

Median income

$86,196

Median age

38.1

Renters

42%

Age distribution

23.4%

22%

26.3%

13%

15.3%

Under 1823.4%

18–3422%

35–5426.3%

55–6413%

65+15.3%

Gender

47.6%

52.4%

Male47.6%

Female52.4%

Race & ethnicity

27.7%

14.9%

43.5%

White27.7%

Black14.9%

Hispanic43.5%

Asian9.7%

Other4.3%

Education (25+)

18%

30.7%

33%

18.3%

No HS diploma18%

HS diploma30.7%

Some college33%

Bachelor's+18.3%

Housing tenure

58%

42%

Owner58%

Renter42%

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

2021 vs 2026

How ZIP 94509 in Antioch, CA has changed in 5 years

Rent

$2,027 → $2,348

up 15.8%

Income

$71,905 → $86,196

up 19.9%

Population

71,669 → 70,090

down 2.2%

Renter share

44.1% → 42%

-2.1 pts

Bachelor's+

17.7% → 18.3%

+0.6 pts

Median age

36.5 → 38.1

+1.6 yrs

Rent in ZIP 94509 in Antioch, CA has increased 15.8% since 2021, going from about $2,027 per month to roughly $2,348 today. Household income in the area moved from $71,905 to $86,196 across the same window, up 19.9% versus 2021. Income growth outran rent by about 4.1 percentage points, easing the affordability math somewhat compared with 2021. Headcount in the area went from 71,669 to 70,090 between 2021 and 2024, a 2.2% change. About 42% of households rent today, against 44.1% in 2021. Reading these numbers side by side helps frame whether current listings in ZIP 94509 in Antioch, CA look reasonable against where the market sat half a decade ago.

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About renting in ZIP 94509

Last updated: October 17, 2026

ZIP code 94509 covers Antioch, CA. The median rent here is $2,348/mo as of October 2026. A 1-bedroom rents for a median of $1,990/mo. A 2-bedroom rents for a median of $2,420/mo.

At 33% of local median household income ($86,196/yr), ZIP 94509 ranks as moderate compared to the national benchmark of 30%. Rents have increased 0.4% over the past year.

FAQ

Frequently asked questions

How much income do you need to rent in ZIP 94509?

To keep rent at or below 30% of gross income, you would need to earn at least $94,000/year (about $45/hour full-time) to afford the median rent of $2,348/mo in ZIP 94509. The local median household income is $86,196/yr, so the typical household falls short of that bar.

Is rent going up or down in ZIP 94509?

Rent in ZIP 94509 has been roughly flat over the past year as of September 2026, a +0.4% change. It sits 0.6% below its high of $2,362 in February 2026.

When is the cheapest time to rent in ZIP 94509?

Asking rents in ZIP 94509 are usually lowest in December, about 0.7% below their yearly trend, and highest in May, about 0.6% above it. At today's median that is a gap of roughly $31 a month. This pattern comes from 11 years of Zillow rent data.

Has rent outpaced income in ZIP 94509?

No. From 2019 to 2024, rent in ZIP 94509 rose 27.5% while median household income rose 33.6%, from $64,502 to $86,196. Rent is Zillow's yearly average; income is the Census 5-year estimate for the same years.

How does ZIP 94509 compare to other ZIPs in California?

ZIP 94509 is one of the more affordable among California ZIP codes for rent, ranking #688 of 898 at $2,348/mo. Over the year to September 2026, rent in ZIP 94509 changed +0.4%, against a typical +3.2% across the 819 California ZIP codes Zillow tracks.