Residential delivery area · California
ZIP Code 90720: Los Alamitos, CA
ZIP code 90720 is in Los Alamitos, California, entirely in Orange County (Census 2020 ZIP-county file). About 24,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $135,851 (Census Bureau, ACS 2020-2024). By Census place, its land lies in Los Alamitos (66%), Rossmoor (26%) and Cypress (8%).
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Los Alamitos · its only residential ZIP
- County
- Orange County
- Census places
- Los Alamitos (66%); Rossmoor (26%) census-designated place; Cypress (8%)
- Neighborhood
- Royal Oak Mobile Home Park GeoNames
- Metro area
- Los Angeles-Long Beach-Anaheim, CA
- House district
- CA-45 119th Congress
- State
- California
- Time zone
- Pacific
- Land area
- 6.1 sq mi · 3,916 people per sq mi
- PO Box ZIPs
- 90721 also use the name Los Alamitos
Where is ZIP code 90720?
90720 centers on 33.795°, -118.063° and covers 6.1 square miles of land plus 0.1 of water. It borders 5 ZIP codes: 90630, 92845, 90740, 90815, 90808.
The map draws ZIP code areas only. For the streets inside 90720, 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 90720 compare with the rest of Orange County?
| Measure | 90720 | In Orange County | In CA |
|---|---|---|---|
| People (ACS 2020-2024) | 23,805 | 65th of 90 | 746th of 1,802 |
| Median household income | $136k | 31st of 82 | 233rd of 1,189 |
| Median home value | $1.22M | 19th of 85 | 217th of 1,317 |
Its median household income is higher than in 94% of U.S. residential ZIP codes, and it is denser than 91% 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 90720?
The 2020 Census counted 22,955 people in 90720; the ACS, which samples households over 2020-2024, estimates 23,805. Between the 2010 and 2020 censuses its population grew 5.5% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 23,805
- 2020 Census count
- 22,955+5.5% since 2010 (21,751)
- Households
- 8,478
- Median age
- 43.0
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 90720?
Of the 23,805 people the ACS estimates in 90720, 24.5% are under 18 and 18.5% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (54.2%), then Hispanic or Latino (22.8%).
- Under 1824.5%
- 18 to 6457.0%
- 65 and older18.5%
- White, not Hispanic54.2%
- Hispanic or Latino22.8%
- Asian, not Hispanic13.6%
- Other or two or more6.7%
- Black, not Hispanic2.7%
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 90720 earn?
Median household income is $135,851 (ACS 2020-2024), the 31st highest of the 82 ranked ZIP codes in Orange County. It is not measurably different from 2015-2019 ($130,468 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $135,851
- Income per person
- $68,402
- Below the poverty line
- 6.8%
- Unemployed (of the labor force)
- 6.5%
- Adults 25+ with a bachelor's degree
- 53.3%
- Adjusted gross income per tax return, 2022
- $160,47611,240 returns; wages 58% 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 90720?
FHFA's house price index for 90720, built from repeat sales and appraisals of the same homes, rose 66% from 2015 to 2025 and rose 41% from 2020 to 2025, and moved +3.2% in 2025.
- Median home value (owners' estimate)
- $1,215,400
- Median gross rent
- $2,465
- Homes owned by their occupants
- 64.9%
- Housing units
- 8,825
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 90720?
1,244 business establishments had a location in this ZIP code in 2023, 74 more than in 2018; the most are in health care and social assistance (ZIP Code Business Patterns).
- Health care and social assistance271
- Professional, scientific, and technical services185
- Construction99
- Wholesale trade90
- Real estate and rental and leasing87
- Finance and insurance79
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 90720?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 90630 | Cypress | 49,318 | $130k | 2.1 mi |
| 92845 | Garden Grove | 16,143 | $137k | 2.2 mi |
| 90740 | Seal Beach | 24,254 | $85k | 2.9 mi |
| 90815 | Long Beach | 43,023 | $120k | 3.0 mi |
| 90808 | Long Beach | 39,317 | $138k | 3.4 mi |
| 90716 | Hawaiian Gardens | 13,599 | $76k | 2.5 mi (near) |
| 90715 | Lakewood | 20,182 | $92k | 3.3 mi (near) |
| 90822 | Long Beach | 93 | – | 3.4 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 Los Alamitos?
1 more ZIP code carries the postal name Los Alamitos, 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 |
|---|---|
| 90721 | 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.