Residential delivery area · California
ZIP Code 92831: Fullerton, CA
ZIP code 92831 is in Fullerton, California, entirely in Orange County (Census 2020 ZIP-county file). About 36,000 people live there (Census Bureau, ACS 2020-2024), the 2nd most populous of Fullerton's 4 residential ZIP codes. Median household income is $89,278 (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Fullerton · 4 residential ZIPs
- County
- Orange County
- Census places
- Fullerton
- Metro area
- Los Angeles-Long Beach-Anaheim, CA
- House districts
- CA-45 (69%), CA-46 (31%) 119th Congress, by share of land
- State
- California
- Time zone
- Pacific
- Land area
- 5.9 sq mi · 5,987 people per sq mi
Where is ZIP code 92831?
92831 centers on 33.880°, -117.896° and covers 5.9 square miles of land. It borders 6 ZIP codes: 92835, 92832, 92870, 92806, 92805, 92801.
The map draws ZIP code areas only. For the streets inside 92831, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 92831 compare with the rest of Fullerton?
| Measure | 92831 | In Fullerton | In Orange County | In CA |
|---|---|---|---|---|
| People (ACS 2020-2024) | 35,618 | 2nd of 4 | 44th of 90 | 473rd of 1,802 |
| Median household income | $89k | 4th of 4 | 68th of 82 | 710th of 1,189 |
| Median home value | $877k | 3rd of 4 | 59th of 85 | 458th of 1,317 |
Its median household income is higher than in 73% of U.S. residential ZIP codes, and it is denser than 95% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 92831?
The 2020 Census counted 38,953 people in 92831; the ACS, which samples households over 2020-2024, estimates 35,618. Between the 2010 and 2020 censuses its population grew 13.9% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 35,618
- 2020 Census count
- 38,953+13.9% since 2010 (34,204)
- Households
- 13,071
- Median age
- 32.4
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 92831?
Of the 35,618 people the ACS estimates in 92831, 17.6% are under 18 and 11.8% are 65 or older. The largest group by race and Hispanic origin is Hispanic or Latino (41.0%), then White (not Hispanic) (33.5%).
- Under 1817.6%
- 18 to 6470.6%
- 65 and older11.8%
- Hispanic or Latino41.0%
- White, not Hispanic33.5%
- Asian, not Hispanic18.0%
- Other or two or more5.2%
- Black, not Hispanic2.3%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 92831 earn?
Median household income is $89,278 (ACS 2020-2024), the 68th highest of the 82 ranked ZIP codes in Orange County. It is not measurably different from 2015-2019 ($86,779 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $89,278
- Income per person
- $48,337
- Below the poverty line
- 15.7%
- Unemployed (of the labor force)
- 6.9%
- Adults 25+ with a bachelor's degree
- 44.7%
- Adjusted gross income per tax return, 2022
- $92,01116,190 returns; wages 69% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 92831?
FHFA's house price index for 92831, built from repeat sales and appraisals of the same homes, rose 84% from 2015 to 2025 and rose 53% from 2020 to 2025, and moved +4.7% in 2025.
- Median home value (owners' estimate)
- $876,800
- Median gross rent
- $2,146
- Homes owned by their occupants
- 41.0%
- Housing units
- 13,856
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 92831?
1,179 business establishments had a location in this ZIP code in 2023, 1 fewer than in 2018; the most are in wholesale trade (ZIP Code Business Patterns).
- Wholesale trade134
- Professional, scientific, and technical services134
- Health care and social assistance118
- Accommodation and food services113
- Retail trade104
- Construction103
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 92831?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 92835 | Fullerton | 26,005 | $144k | 1.8 mi |
| 92832 | Fullerton | 27,298 | $94k | 2.0 mi |
| 92870 | Placentia | 52,826 | $116k | 2.4 mi |
| 92806 | Anaheim | 41,003 | $97k | 3.2 mi |
| 92805 | Anaheim | 74,661 | $91k | 3.5 mi |
| 92801 | Anaheim | 60,547 | $84k | 4.0 mi |
| 92833 | Fullerton | 51,842 | $114k | 3.7 mi (near) |
| 92821 | Brea | 41,623 | $124k | 4.3 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.