Residential delivery area · California
ZIP Code 91803: Alhambra, CA
ZIP code 91803 is in Alhambra, California, entirely in Los Angeles County (Census 2020 ZIP-county file). About 28,000 people live there (Census Bureau, ACS 2020-2024), the less populous of Alhambra's 2 residential ZIP codes. Median household income is $84,311 (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Alhambra · 2 residential ZIPs
- County
- Los Angeles County
- Census places
- Alhambra
- Neighborhood
- Shorb GeoNames
- Metro area
- Los Angeles-Long Beach-Anaheim, CA
- House district
- CA-28 119th Congress
- State
- California
- Time zone
- Pacific
- Land area
- 3.3 sq mi · 8,502 people per sq mi
Where is ZIP code 91803?
91803 centers on 34.075°, -118.146° and covers 3.3 square miles of land plus 0.0 of water. It borders 3 ZIP codes: 91754, 91801, 90032.
The map draws ZIP code areas only. For the streets inside 91803, 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 91803 compare with the rest of Alhambra?
| Measure | 91803 | In Alhambra | In Los Angeles County | In CA |
|---|---|---|---|---|
| People (ACS 2020-2024) | 27,715 | 2nd of 2 | 174th of 301 | 654th of 1,802 |
| Median household income | $84k | 2nd of 2 | 168th of 265 | 778th of 1,189 |
| Median home value | $889k | 1st of 2 | 122nd of 273 | 448th of 1,317 |
Its median household income is higher than in 67% 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 91803?
The 2020 Census counted 29,374 people in 91803; the ACS, which samples households over 2020-2024, estimates 27,715. Between the 2010 and 2020 censuses its population fell 3.1% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 27,715
- 2020 Census count
- 29,374−3.1% since 2010 (30,322)
- Households
- 10,028
- Median age
- 41.8
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 91803?
Of the 27,715 people the ACS estimates in 91803, 18.3% are under 18 and 19.3% are 65 or older. The largest group by race and Hispanic origin is Asian (not Hispanic) (50.4%), then Hispanic or Latino (38.1%).
- Under 1818.3%
- 18 to 6462.4%
- 65 and older19.3%
- Asian, not Hispanic50.4%
- Hispanic or Latino38.1%
- White, not Hispanic7.5%
- Other or two or more2.8%
- Black, not Hispanic1.1%
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 91803 earn?
Median household income is $84,311 (ACS 2020-2024), the 168th highest of the 265 ranked ZIP codes in Los Angeles County. It is not measurably different from 2015-2019 ($77,624 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $84,311±$9,108
- Income per person
- $42,858
- Below the poverty line
- 13.3%
- Unemployed (of the labor force)
- 4.0%
- Adults 25+ with a bachelor's degree
- 38.3%
- Adjusted gross income per tax return, 2022
- $69,07814,790 returns; wages 77% 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 91803?
FHFA's house price index for 91803, built from repeat sales and appraisals of the same homes, rose 79% from 2015 to 2025 and rose 37% from 2020 to 2025, and moved −0.3% in 2025.
- Median home value (owners' estimate)
- $888,600
- Median gross rent
- $1,847
- Homes owned by their occupants
- 48.4%
- Housing units
- 10,700
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 91803?
876 business establishments had a location in this ZIP code in 2023, 73 more than in 2018; the most are in professional, scientific, and technical services (ZIP Code Business Patterns).
- Professional, scientific, and technical services115
- Transportation and warehousing109
- Wholesale trade97
- Retail trade88
- Health care and social assistance88
- Accommodation and food services69
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 91803?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 91754 | Monterey Park | 32,248 | $86k | 1.5 mi |
| 91801 | Alhambra | 53,381 | $89k | 1.5 mi |
| 90032 | Los Angeles | 43,117 | $82k | 2.3 mi |
| 91030 | South Pasadena | 26,068 | $127k | 2.4 mi (near) |
| 91755 | Monterey Park | 26,810 | $76k | 2.4 mi (near) |
| 90063 | Los Angeles | 48,397 | $73k | 3.1 mi (near) |
| 91776 | San Gabriel | 36,952 | $82k | 3.1 mi (near) |
| 90022 | Los Angeles | 60,343 | $68k | 3.6 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.