Residential delivery area · California
ZIP Code 94587: Union City, CA
ZIP code 94587 is in Union City, California, entirely in Alameda County (Census 2020 ZIP-county file). About 67,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $133,715 (Census Bureau, ACS 2020-2024). By Census place, its land lies in Union City (63%) and Hayward (37%).
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Union City · its only residential ZIP
- County
- Alameda County
- Census places
- Union City (63%); Hayward (37%)
- Metro area
- San Francisco-Oakland-Fremont, CA
- House district
- CA-14 119th Congress
- State
- California
- Time zone
- Pacific
- Land area
- 19.6 sq mi · 3,437 people per sq mi
Where is ZIP code 94587?
94587 centers on 37.590°, -122.075° and covers 19.6 square miles of land plus 1.1 of water. It borders 6 ZIP codes: 94544, 94555, 94545, 94542, 94536, 94552.
The map draws ZIP code areas only. For the streets inside 94587, 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 94587 compare with the rest of Alameda County?
| Measure | 94587 | In Alameda County | In CA |
|---|---|---|---|
| People (ACS 2020-2024) | 67,464 | 5th of 53 | 73rd of 1,802 |
| Median household income | $134k | 24th of 48 | 251st of 1,189 |
| Median home value | $1.1M | 26th of 49 | 282nd of 1,317 |
Its median household income is higher than in 94% of U.S. residential ZIP codes, and it is denser than 90% 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 94587?
The 2020 Census counted 70,121 people in 94587; the ACS, which samples households over 2020-2024, estimates 67,464. Its boundary changed between the 2010 and 2020 censuses, so the two counts are not compared.
- People, ACS 2020-2024
- 67,464
- 2020 Census count
- 70,121
- Households
- 21,240
- 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 94587?
Of the 67,464 people the ACS estimates in 94587, 17.0% are under 18 and 19.4% are 65 or older. The largest group by race and Hispanic origin is Asian (not Hispanic) (56.9%), then Hispanic or Latino (20.2%).
- Under 1817.0%
- 18 to 6463.6%
- 65 and older19.4%
- Asian, not Hispanic56.9%
- Hispanic or Latino20.2%
- White, not Hispanic13.6%
- Other or two or more4.8%
- Black, not Hispanic4.4%
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 94587 earn?
Median household income is $133,715 (ACS 2020-2024), the 24th highest of the 48 ranked ZIP codes in Alameda County.
- Median household income
- $133,715
- Income per person
- $57,977
- Below the poverty line
- 7.2%
- Unemployed (of the labor force)
- 5.3%
- Adults 25+ with a bachelor's degree
- 45.1%
- Adjusted gross income per tax return, 2022
- $117,59033,580 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 94587?
FHFA's house price index for 94587, built from repeat sales and appraisals of the same homes, rose 105% from 2015 to 2025 and rose 52% from 2020 to 2025, and moved +7.2% in 2025.
- Median home value (owners' estimate)
- $1,104,900
- Median gross rent
- $2,713
- Homes owned by their occupants
- 64.7%
- Housing units
- 21,901
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 94587?
1,362 business establishments had a location in this ZIP code in 2023, 139 more than in 2018; the most are in health care and social assistance (ZIP Code Business Patterns).
- Health care and social assistance193
- Transportation and warehousing177
- Professional, scientific, and technical services135
- Wholesale trade133
- Accommodation and food services133
- Retail trade122
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 94587?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 94544 | Hayward | 76,947 | $108k | 3.2 mi |
| 94555 | Fremont | 37,501 | $220k | 3.2 mi |
| 94545 | Hayward | 32,843 | $114k | 3.8 mi |
| 94542 | Hayward | 14,871 | $134k | 5.3 mi |
| 94536 | Fremont | 70,619 | $168k | 5.3 mi |
| 94552 | Castro Valley | 14,506 | $213k | 8.8 mi |
| 94541 | Hayward | 67,139 | $106k | 5.8 mi (near) |
| 94560 | Newark | 46,903 | $169k | 6.4 mi (near) |
| 94580 | San Lorenzo | 29,420 | $111k | 6.9 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.