Residential delivery area · California
ZIP Code 94578: San Leandro, CA
ZIP code 94578 uses the postal name San Leandro, California and lies entirely in Alameda County (Census 2020 ZIP-county file). About 42,000 people live there (Census Bureau, ACS 2020-2024), the 2nd most populous of San Leandro's 3 residential ZIP codes. Median household income is $94,084 (Census Bureau, ACS 2020-2024). By Census place, its land lies in San Leandro (46%), Castro Valley (37%) and Ashland (17%).
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- San Leandro · 3 residential ZIPs
- County
- Alameda County
- Census places
- San Leandro (46%); Castro Valley (37%) census-designated place; Ashland (17%) census-designated place
- Metro area
- San Francisco-Oakland-Fremont, CA
- House districts
- CA-14 (68%), CA-12 (32%) 119th Congress, by share of land
- State
- California
- Time zone
- Pacific
- Land area
- 4.6 sq mi · 9,162 people per sq mi
Where is ZIP code 94578?
94578 centers on 37.707°, -122.126° and covers 4.6 square miles of land. It borders 5 ZIP codes: 94580, 94579, 94577, 94546, 94541.
The map draws ZIP code areas only. For the streets inside 94578, 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 94578 compare with the rest of San Leandro?
| Measure | 94578 | In San Leandro | In Alameda County | In CA |
|---|---|---|---|---|
| People (ACS 2020-2024) | 41,769 | 2nd of 3 | 16th of 53 | 354th of 1,802 |
| Median household income | $94k | 3rd of 3 | 42nd of 48 | 651st of 1,189 |
| Median home value | $823k | 3rd of 3 | 43rd of 49 | 535th of 1,317 |
Its median household income is higher than in 77% 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 94578?
The 2020 Census counted 40,957 people in 94578; the ACS, which samples households over 2020-2024, estimates 41,769. Between the 2010 and 2020 censuses its population grew 6.2% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 41,769
- 2020 Census count
- 40,957+6.2% since 2010 (38,558)
- Households
- 13,904
- Median age
- 37.9
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 94578?
Of the 41,769 people the ACS estimates in 94578, 21.2% are under 18 and 13.9% are 65 or older. The largest group by race and Hispanic origin is Hispanic or Latino (34.4%), then Asian (not Hispanic) (27.1%).
- Under 1821.2%
- 18 to 6464.8%
- 65 and older13.9%
- Hispanic or Latino34.4%
- Asian, not Hispanic27.1%
- Black, not Hispanic18.2%
- White, not Hispanic14.6%
- Other or two or more5.8%
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 94578 earn?
Median household income is $94,084 (ACS 2020-2024), the 42nd highest of the 48 ranked ZIP codes in Alameda County. It rose from $81,533 in 2015-2019 (in 2024 dollars), a change larger than the surveys' margins of error.
- Median household income
- $94,084
- Income per person
- $39,983
- Below the poverty line
- 11.7%
- Unemployed (of the labor force)
- 5.7%
- Adults 25+ with a bachelor's degree
- 25.8%
- Adjusted gross income per tax return, 2022
- $69,99718,650 returns; wages 83% 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 94578?
FHFA's house price index for 94578, built from repeat sales and appraisals of the same homes, rose 78% from 2015 to 2025 and rose 25% from 2020 to 2025, and moved +0.2% in 2025.
- Median home value (owners' estimate)
- $823,000
- Median gross rent
- $2,116
- Homes owned by their occupants
- 44.1%
- Housing units
- 14,672
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 94578?
606 business establishments had a location in this ZIP code in 2023, 22 more than in 2018; the most are in retail trade (ZIP Code Business Patterns).
- Retail trade111
- Health care and social assistance107
- Other services (except public administration)76
- Accommodation and food services67
- Construction53
- Real estate and rental and leasing41
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 94578?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 94580 | San Lorenzo | 29,420 | $111k | 2.0 mi |
| 94579 | San Leandro | 20,017 | $99k | 2.2 mi |
| 94577 | San Leandro | 46,317 | $109k | 2.5 mi |
| 94546 | Castro Valley | 44,855 | $128k | 2.9 mi |
| 94541 | Hayward | 67,139 | $106k | 3.1 mi |
| 94603 | Oakland | 35,742 | $77k | 3.5 mi (near) |
| 94605 | Oakland | 44,103 | $106k | 4.0 mi (near) |
| 94545 | Hayward | 32,843 | $114k | 5.3 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.