Residential delivery area · California
ZIP Code 92870: Placentia, CA
ZIP code 92870 is in Placentia, California, entirely in Orange County (Census 2020 ZIP-county file). About 53,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $115,929 (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Placentia · its only residential ZIP
- County
- Orange County
- Census places
- Placentia
- Neighborhoods
- Del Cerro Mobile Home Estates, Hacienda Mobile Home Park, La Jolla GeoNames
- Metro area
- Los Angeles-Long Beach-Anaheim, CA
- House district
- CA-45 119th Congress
- State
- California
- Time zone
- Pacific
- Land area
- 6.7 sq mi · 7,850 people per sq mi
- PO Box ZIPs
- 92871 also use the name Placentia
Where is ZIP code 92870?
92870 centers on 33.881°, -117.855° and covers 6.7 square miles of land plus 0.0 of water. It borders 7 ZIP codes: 92831, 92806, 92886, 92821, 92835, 92807, 92823.
The map draws ZIP code areas only. For the streets inside 92870, 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); neighborhoods from the GeoNames gazetteer (CC BY 4.0), placed in this ZIP code by PlainZIP.
How does 92870 compare with the rest of Orange County?
| Measure | 92870 | In Orange County | In CA |
|---|---|---|---|
| People (ACS 2020-2024) | 52,826 | 20th of 90 | 193rd of 1,802 |
| Median household income | $116k | 49th of 82 | 390th of 1,189 |
| Median home value | $921k | 50th of 85 | 412th of 1,317 |
Its median household income is higher than in 89% of U.S. residential ZIP codes, and it is denser than 97% 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 92870?
The 2020 Census counted 52,749 people in 92870; the ACS, which samples households over 2020-2024, estimates 52,826. Between the 2010 and 2020 censuses its population grew 1.4% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 52,826
- 2020 Census count
- 52,749+1.4% since 2010 (52,033)
- Households
- 17,182
- Median age
- 39.1
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 92870?
Of the 52,826 people the ACS estimates in 92870, 23.3% are under 18 and 15.7% are 65 or older. The largest group by race and Hispanic origin is Hispanic or Latino (37.9%), then White (not Hispanic) (36.6%).
- Under 1823.3%
- 18 to 6461.1%
- 65 and older15.7%
- Hispanic or Latino37.9%
- White, not Hispanic36.6%
- Asian, not Hispanic18.4%
- Other or two or more5.1%
- Black, not Hispanic2.1%
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 92870 earn?
Median household income is $115,929 (ACS 2020-2024), the 49th highest of the 82 ranked ZIP codes in Orange County. It is not measurably different from 2015-2019 ($116,451 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $115,929
- Income per person
- $48,006
- Below the poverty line
- 7.9%
- Unemployed (of the labor force)
- 5.5%
- Adults 25+ with a bachelor's degree
- 44.2%
- Adjusted gross income per tax return, 2022
- $93,94125,120 returns; wages 74% 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 92870?
FHFA's house price index for 92870, built from repeat sales and appraisals of the same homes, rose 95% from 2015 to 2025 and rose 61% from 2020 to 2025, and moved +8.3% in 2025.
- Median home value (owners' estimate)
- $921,000
- Median gross rent
- $2,388
- Homes owned by their occupants
- 63.6%
- Housing units
- 17,890
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 92870?
1,295 business establishments had a location in this ZIP code in 2023, 64 more than in 2018; the most are in health care and social assistance (ZIP Code Business Patterns).
- Health care and social assistance187
- Professional, scientific, and technical services143
- Construction126
- Other services (except public administration)115
- Accommodation and food services111
- Wholesale trade103
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 92870?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 92831 | Fullerton | 35,618 | $89k | 2.4 mi |
| 92806 | Anaheim | 41,003 | $97k | 3.1 mi |
| 92886 | Yorba Linda | 49,704 | $153k | 3.2 mi |
| 92821 | Brea | 41,623 | $124k | 3.5 mi |
| 92835 | Fullerton | 26,005 | $144k | 3.7 mi |
| 92807 | Anaheim | 37,296 | $139k | 4.4 mi |
| 92823 | Brea | 5,846 | $170k | 4.7 mi |
| 92865 | Orange | 20,589 | $127k | 3.8 mi (near) |
| 92832 | Fullerton | 27,298 | $94k | 4.3 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.
Which other ZIP codes use the name Placentia?
1 more ZIP code carries the postal name Placentia, CA without a residential delivery area: PO boxes at the post office, or a single organization with its own ZIP code. The Census Bureau publishes no figures for it.
| ZIP | County |
|---|---|
| 92871 | Orange County |
Source: GeoNames postal codes (CC BY 4.0), downloaded 2026-10-09; a ZIP code with no Census ZCTA has no residential delivery area.