Residential delivery area · California
ZIP Code 91801: Alhambra, CA
ZIP code 91801 is in Alhambra, California, entirely in Los Angeles County (Census 2020 ZIP-county file). About 53,000 people live there (Census Bureau, ACS 2020-2024), the more populous of Alhambra's 2 residential ZIP codes. Median household income is $89,156 (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Alhambra · 2 residential ZIPs
- County
- Los Angeles County
- Census places
- Alhambra
- Neighborhood
- Ramona Park GeoNames
- Metro area
- Los Angeles-Long Beach-Anaheim, CA
- House district
- CA-28 119th Congress
- State
- California
- Time zone
- Pacific
- Land area
- 4.3 sq mi · 12,345 people per sq mi
Where is ZIP code 91801?
91801 centers on 34.091°, -118.128° and covers 4.3 square miles of land. It borders 8 ZIP codes: 91803, 91776, 91030, 91108, 91775, 91755, 91770, 90032.
The map draws ZIP code areas only. For the streets inside 91801, 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 91801 compare with the rest of Alhambra?
| Measure | 91801 | In Alhambra | In Los Angeles County | In CA |
|---|---|---|---|---|
| People (ACS 2020-2024) | 53,381 | 1st of 2 | 44th of 301 | 186th of 1,802 |
| Median household income | $89k | 1st of 2 | 152nd of 265 | 713th of 1,189 |
| Median home value | $834k | 2nd of 2 | 143rd of 273 | 514th of 1,317 |
Its median household income is higher than in 72% of U.S. residential ZIP codes, and it is denser than 98% 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 91801?
The 2020 Census counted 53,669 people in 91801; the ACS, which samples households over 2020-2024, estimates 53,381. Between the 2010 and 2020 censuses its population grew 1.8% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 53,381
- 2020 Census count
- 53,669+1.8% since 2010 (52,735)
- Households
- 20,415
- Median age
- 41.5
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 91801?
Of the 53,381 people the ACS estimates in 91801, 16.5% are under 18 and 18.7% are 65 or older. The largest group by race and Hispanic origin is Asian (not Hispanic) (50.8%), then Hispanic or Latino (33.3%).
- Under 1816.5%
- 18 to 6464.7%
- 65 and older18.7%
- Asian, not Hispanic50.8%
- Hispanic or Latino33.3%
- White, not Hispanic9.8%
- Other or two or more3.1%
- Black, not Hispanic3.0%
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 91801 earn?
Median household income is $89,156 (ACS 2020-2024), the 152nd highest of the 265 ranked ZIP codes in Los Angeles County. It rose from $74,256 in 2015-2019 (in 2024 dollars), a change larger than the surveys' margins of error.
- Median household income
- $89,156
- Income per person
- $43,895
- Below the poverty line
- 12.3%
- Unemployed (of the labor force)
- 5.8%
- Adults 25+ with a bachelor's degree
- 42.0%
- Adjusted gross income per tax return, 2022
- $70,43025,830 returns; wages 76% 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 91801?
FHFA's house price index for 91801, built from repeat sales and appraisals of the same homes, rose 79% from 2015 to 2025 and rose 42% from 2020 to 2025, and moved −0.6% in 2025.
- Median home value (owners' estimate)
- $834,000
- Median gross rent
- $1,981
- Homes owned by their occupants
- 37.4%
- Housing units
- 22,069
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 91801?
1,493 business establishments had a location in this ZIP code in 2023, 46 more than in 2018; the most are in health care and social assistance (ZIP Code Business Patterns).
- Health care and social assistance245
- Professional, scientific, and technical services221
- Accommodation and food services177
- Transportation and warehousing148
- Retail trade139
- Other services (except public administration)106
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 91801?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 91803 | Alhambra | 27,715 | $84k | 1.5 mi |
| 91776 | San Gabriel | 36,952 | $82k | 1.9 mi |
| 91030 | South Pasadena | 26,068 | $127k | 2.1 mi |
| 91108 | San Marino | 12,401 | $205k | 2.3 mi |
| 91775 | San Gabriel | 23,672 | $119k | 2.8 mi |
| 91755 | Monterey Park | 26,810 | $76k | 2.9 mi |
| 91770 | Rosemead | 58,382 | $75k | 3.1 mi |
| 90032 | Los Angeles | 43,117 | $82k | 3.4 mi |
| 91754 | Monterey Park | 32,248 | $86k | 2.8 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.