ZIP Code · CA

ZIP 94531

Part of Antioch, CA

Pop. 46,387·Contra Costa County·194th most expensive ZIP in California

Median rent (all units)

$3,453/mo

Year-over-Year

+6.6%

Month-over-Month

+1.3%

vs US Median

+$1,521

Reported rents

Rising (Monthly)

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Most AffordableMost Expensive

ZIP 94531 · $3,453

More expensive than 95% 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

$2,760

1 BR

$3,070

2 BR

$3,750

3 BR

$4,800

4 BR+

$5,680

Research median

$3,750/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

September. Asking rents in ZIP 94531 usually run 0.7% below trend in September and 0.5% above it in January, about $41 a month apart at today's median. Based on 5 years of data.

Compared with the peak

Rent in ZIP 94531 is at its highest level since Zillow's records here began in March 2021.

Past year vs. the rest of California

Rent in ZIP 94531 changed +6.6% over the year to September 2026. Across the 819 California ZIP codes Zillow tracks, the typical change was +3.2%.

Recent direction

Rent has risen 3 months in a row, and rose in 9 of the last 12 months.

What a typical income covers

30% of the median household income ($120,927) is $3,023 a month. That covers HUD's Fair Market Rent for up to a studio ($2,760); a 1-bedroom is $3,070.

Cheaper nearby

ZIP 94509, 3 miles away, rents for 32% less ($2,348/mo), about $13,300 a year in savings.

From Zillow's monthly rent index (ZORI) for ZIP 94531. 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

$41,436/yr

At $3,453/mo median

Location

CityAntioch

StateCA

CountyContra Costa 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, +1.3% MoM), not inventory.

Demographics

Who lives here

ZIP 94531 (Antioch, CA) is majority owner-occupied, has a median income above the national average, 32.3% of residents hold a bachelor's degree or higher.

Population

46,387

Median income

$120,927

Median age

38.8

Renters

26.8%

Age distribution

21.9%

23.1%

26.5%

15.8%

12.8%

Under 1821.9%

18–3423.1%

35–5426.5%

55–6415.8%

65+12.8%

Gender

48.3%

51.7%

Male48.3%

Female51.7%

Race & ethnicity

26%

25%

23.6%

21.1%

White26%

Black25%

Hispanic23.6%

Asian21.1%

Other4.4%

Education (25+)

24.7%

33.2%

32.3%

No HS diploma9.8%

HS diploma24.7%

Some college33.2%

Bachelor's+32.3%

Housing tenure

73.2%

26.8%

Owner73.2%

Renter26.8%

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

2021 vs 2026

How ZIP 94531 in Antioch, CA has changed in 5 years

Rent

$2,745 → $3,453

up 25.8%

Income

$106,570 → $120,927

up 13.5%

Population

43,067 → 46,387

up 7.7%

Renter share

27.4% → 26.8%

-0.6 pts

Bachelor's+

30% → 32.3%

+2.3 pts

Five years ago, renters in ZIP 94531 in Antioch, CA paid around $2,745 a month. That figure now sits near $3,453, up 25.8% from the 2021 baseline. Household income in the area moved from $106,570 to $120,927 across the same window, up 13.5% versus 2021. Because rent grew faster than wages over the same span, the affordability picture has tightened relative to 2021. Census counts show ZIP 94531 in Antioch, CA adding about 3,320 residents over the five-year window, up 7.7% on net. Bachelor's-degree-or-higher attainment moved from 30% to 32.3% across the same window. Reading these numbers side by side helps frame whether current listings in ZIP 94531 in Antioch, CA look reasonable against where the market sat half a decade ago.

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About renting in ZIP 94531

Last updated: October 17, 2026

ZIP code 94531 covers Antioch, CA. The median rent here is $3,453/mo as of October 2026. A 1-bedroom rents for a median of $3,070/mo. A 2-bedroom rents for a median of $3,750/mo.

At 34% of local median household income ($120,927/yr), ZIP 94531 ranks as moderate compared to the national benchmark of 30%. Rents have increased 6.6% over the past year.

FAQ

Frequently asked questions

How much income do you need to rent in ZIP 94531?

To keep rent at or below 30% of gross income, you would need to earn at least $138,000/year (about $66/hour full-time) to afford the median rent of $3,453/mo in ZIP 94531. The local median household income is $120,927/yr, so the typical household falls short of that bar.

Is rent going up or down in ZIP 94531?

Rent in ZIP 94531 has risen 6.6% over the past year as of September 2026. That is the highest level since Zillow's records here began in March 2021.

When is the cheapest time to rent in ZIP 94531?

Asking rents in ZIP 94531 are usually lowest in September, about 0.7% below their yearly trend, and highest in January, about 0.5% above it. At today's median that is a gap of roughly $41 a month. This pattern comes from 5 years of Zillow rent data.

How does ZIP 94531 compare to other ZIPs in California?

ZIP 94531 is one of the pricier among California ZIP codes for rent, ranking #194 of 898 at $3,453/mo. Over the year to September 2026, rent in ZIP 94531 changed +6.6%, against a typical +3.2% across the 819 California ZIP codes Zillow tracks.