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ZIP Code · CA

ZIP 92831

Pop. 35,618·Orange County·547th most expensive ZIP in California
Median rent (all units)
$2,640/mo
Year-over-Year
+2.6%
Month-over-Month
+3.1%
vs US Median
+$675
Rising (Monthly)
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Most AffordableMost Expensive
ZIP 92831 · $2,640
More expensive than 83% of US ZIP codes · National median $1,965/mo
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Medians by bedroom

Rent by unit size

Studio
$2,590
1 BR
$2,650
2 BR
$3,120
3 BR
$4,240
4 BR+
$5,060
Research median
$3,120/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
$31,680/yr
At $2,640/mo median
Location
StateCA
CountyOrange County
Rent Market Meter
Strong Landlord's Market
Renter's MarketBalancedLandlord's Market
Rents are up 2.6% year-over-year. Expect competition, and move quickly to lock in terms.
Based on rent-price momentum (+2.6% YoY, +3.1% MoM), not inventory.
Demographics

Who lives here

ZIP 92831 (Fullerton, CA) is majority renter-occupied, skews toward younger working-age adults, 44.7% of residents hold a bachelor's degree or higher.

Population
35,618
Median income
$89,278
Median age
32.4
Renters
59%
Age distribution
17.6%
35.7%
23.8%
Under 1817.6%
18–3435.7%
35–5423.8%
55–6411.1%
65+11.8%
Gender
50.4%
49.6%
Male50.4%
Female49.6%
Race & ethnicity
41.9%
41%
18.1%
White41.9%
Black2.9%
Hispanic41%
Asian18.1%
Education (25+)
15.6%
27.9%
44.7%
No HS diploma11.8%
HS diploma15.6%
Some college27.9%
Bachelor's+44.7%
Housing tenure
41%
59%
Owner41%
Renter59%

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

2021 vs 2026

How ZIP 92831 in Fullerton, CA has changed in 5 years

Rent
$1,843 → $2,640
up 43.2%
Income
$79,461 → $89,278
up 12.4%
Population
36,859 → 35,618
down 3.4%
Renter share
57.8% → 59%
+1.2 pts
Bachelor's+
43.7% → 44.7%
+1.0 pts
Median age
29.8 → 32.4
+2.6 yrs

Five years ago, renters in ZIP 92831 in Fullerton, CA paid around $1,843 a month. That figure now sits near $2,640, up 43.2% from the 2021 baseline. On the earnings side, the typical household in ZIP 92831 in Fullerton, CA now reports about $89,278, up from $79,461 in 2021. Because rent grew faster than wages over the same span, the affordability picture has tightened relative to 2021. Census counts show ZIP 92831 in Fullerton, CA losing about 1,241 residents over the five-year window, down 3.4% on net. For context, the 2021 to 2026 window covers an unusually volatile run for US rents nationally, and ZIP 92831 in Fullerton, CA reflects that arc in its own way.

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Local insights

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About renting in ZIP 92831

Last updated: July 20, 2026

ZIP code 92831 covers Fullerton, CA. The median rent here is $2,640/mo as of July 2026. A 1-bedroom rents for a median of $2,650/mo. A 2-bedroom rents for a median of $3,120/mo.

At 35% of local median household income ($89,278/yr), ZIP 92831 ranks as moderate compared to the national benchmark of 30%. Rents have increased 2.6% over the past year.

FAQ

Frequently asked questions

How much is rent in ZIP code 92831?

As of July 20, 2026, the median monthly rent in ZIP 92831 (Fullerton, CA) is $2,640. This is based on aggregated data from public sources and community submissions.

How does ZIP 92831 rent compare to the US average?

ZIP 92831's median rent of $2,640/mo is $675 (34%) above the US national median of $1,965/mo.

How does ZIP 92831 compare to other ZIPs in California?

ZIP 92831 falls in the middle range for California, ranking #547 out of 907 ZIPs at $2,640/mo.

How much income do you need to rent in ZIP 92831?

To keep rent at or below 30% of gross income, you would need to earn at least $106,000/year (~$51/hour full-time) to afford the median rent of $2,640/mo in ZIP 92831. The local median household income is $89,278/yr, meaning the typical household falls short of that threshold.

Is rent going up or down in ZIP 92831?

Rent in ZIP 92831 has increased 2.6% over the past year as of July 20, 2026, putting upward pressure on renter budgets.

Is ZIP 92831 an affordable place to rent?

ZIP 92831 is considered moderate for renters. At $2,640/mo, rent takes approximately 35% of the local median household income ($89,278/yr). The standard benchmark is 30%. ZIP 92831 slightly exceeds that threshold, so budgeting carefully matters here.

What percentage of ZIP 92831 residents rent vs. own?

According to Census data, approximately 59% of ZIP 92831 households are renters, while 41% are owner-occupied. With a majority renter population, ZIP 92831 has a strong rental market.

How does ZIP 92831 compare to the rest of Fullerton?

ZIP 92831 is more affordable than Fullerton overall. At $2,640/mo, it's $232 below the Fullerton citywide median of $2,872/mo.

When was rent data for ZIP 92831 last updated?

Rent data for ZIP 92831 reflects July 20, 2026. RentDataNow refreshes all data monthly using public and private datasets.
Income Affordability
35%
MODERATE

At $2,640/mo, rent takes ~35% of ZIP 92831's median household income ($89,278/yr). The standard benchmark is 30%.

ZIP 92831 35%Benchmark 30%
State income tax1–13.3%
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Schools nearby

Public schools near ZIP 92831 (Fullerton, CA)

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