Postal Codes

94587 ZIP Code

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ZIP code 94587 covers Union City, California, with a population of about 68,141 and a median household income of $137,194.

Population
68,1413,471 per square mile
Median age
42.13.4 points above the US average
Median household income
$137,1941.4× the California median
Poverty rate
7%5.4 points below the US average
Typical home value
$1,222,993up 9.8% in five years
Median rent
$2,7131.4× the California median
Degree or higher
45.3%10.3 points above the US average
Homeownership
67%2 points above the US average
Time zone
Pacific UTC-08:00observes daylight saving time
Businesses
1,344

Where 94587 is

Union City, California — the area the Census Bureau draws for this ZIP code. ZIP codes are sets of delivery routes rather than areas, so this is the Census approximation of one, not a Postal Service boundary.

People and households

American Community Survey 2019–2023 five-year estimates

Population68,141
Median age42.1
Family households79.4%
Born outside the US46.9%
Speaks a language other than English at home61.2%
White (non-Hispanic)14.6%
Black (non-Hispanic)5.3%
Asian (non-Hispanic)55.4%
Hispanic or Latino19.3%
Veterans3.5%
Population by age
MaleFemale0-45-910-1415-1920-2425-3435-4445-5455-6465-7475-8485+
Income and poverty

American Community Survey 2019–2023 five-year estimates

Median household income$137,194
Income per person$56,020
Poverty rate7%
Households on SNAP or cash assistance10.5%

Household income distribution

Under $10k3.6%
$10–15k1.5%
$15–20k1.2%
$20–25k2.3%
$25–30k1.3%
$30–35k1.3%
$35–40k1.0%
$40–45k1.7%
$45–50k1.5%
$50–60k3.4%
$60–75k6.0%
$75–100k10.6%
$100–125k9.1%
$125–150k9.2%
$150–200k12.7%
$200k or more33.4%

Income as declared to the IRS

Filed returns rather than survey responses, so this counts tax units and not households.

Tax returns filed33,580
Mean adjusted gross income$117,590
Returns declaring $200,000 or more15.8%
Returns, under $25k19.9%
Returns, $25k–$50k17.5%
Returns, $50k–$75k15.2%
Returns, $75k–$100k11.0%
Returns, $100k–$200k20.6%
Returns, $200k or more15.8%
Housing

American Community Survey 2019–2023 five-year estimates

Median home value$1,058,200
Median gross rent$2,713
Rent as a share of household income27.8%
Owner-occupied67%
Vacant homes3.3%
Median year built1979

What the homes are

Detached house60%
Attached house11.7%
2 to 4 units5.9%
5 to 19 units4.4%
20 or more units12.7%
Mobile home5.2%
Boat, RV or van0.1%
Home values and rents today

Zillow Home Value Index and Zillow Observed Rent Index, courtesy of Zillow. Monthly and current, where the Census figures above are a five-year average and are capped at $2,000,000.

Typical home value$1,222,993as of 2026-07
Typical home value, 1 yeardown 4.1%
Typical home value, 5 yearsup 9.8%
Typical home value, 10 yearsup 70.1%
Typical asking rent$2,941as of 2026-07
Typical asking rent, 1 yearup 4.1%
Typical asking rent, 5 yearsup 20.2%
Typical home value since 2000
200020132026$1,322,944$327,267

$327,267 in 2000 to $1,222,993 in 2026.

Typical asking rent
201820222026$2,941$2,401

$2,416 in 2018 to $2,941 in 2026.

Work, commuting and education

American Community Survey 2019–2023 five-year estimates

Unemployment rate5%
Bachelor's degree or higher45.3%
High school diploma or higher87.4%
Works from home17.7%
Drives to work alone61.5%
Takes public transport5.1%
Commutes 45 minutes or more26.3%
Health

CDC PLACES 2025 release, model-based estimates. These are modelled small-area estimates for adults, not counts of diagnosed cases.

Obesity19% 14.4 pts below the national average of 33.4%
Diagnosed diabetes11.8% same as the national average of 12%
Currently smokes8.6% 4.6 pts below the national average of 13.2%
High blood pressure27.7% 6.4 pts below the national average of 34.1%
Fair or poor general health17.9% 2.4 pts below the national average of 20.3%
No health insurance (18–64)7.3% 4 pts below the national average of 11.3%
Depression15.6% 6.3 pts below the national average of 21.9%
No leisure-time physical activity22.1% 3.3 pts below the national average of 25.4%
Arthritis17.6% 7.5 pts below the national average of 25.1%
Binge drinking13.3% 2.7 pts below the national average of 16%
Taking blood pressure medication72% 2.7 pts below the national average of 74.7%
Cancer (non-skin)5% 2.7 pts below the national average of 7.7%
Current asthma7.8% 2.6 pts below the national average of 10.4%
Coronary heart disease4.7% 1.5 pts below the national average of 6.2%
Routine check-up in past year72.7% 4 pts below the national average of 76.7%
Cholesterol screening87.3% 1.4 pts above the national average of 85.9%
Cognitive disability11% 3.8 pts below the national average of 14.8%
Colorectal screening59% 5.3 pts below the national average of 64.3%
COPD3.6% 3 pts below the national average of 6.6%
Visited a dentist66.1% 4.8 pts above the national average of 61.3%
Any disability25.7% 5 pts below the national average of 30.7%
Lacks emotional support31.1% 6.3 pts above the national average of 24.8%
Food insecurity14.3% 2.8 pts below the national average of 17.1%
Received food stamps10.3% 4 pts below the national average of 14.3%
Hearing disability5% 1.7 pts below the national average of 6.7%
High cholesterol35% 1.2 pts below the national average of 36.2%
Housing insecurity10.9% 2.9 pts below the national average of 13.8%
Independent living disability5.9% 2.5 pts below the national average of 8.4%
Lacks transport7.1% 2.1 pts below the national average of 9.2%
Loneliness39.2% 4.8 pts above the national average of 34.4%
Mammography use75.7% same as the national average of 75.9%
Poor mental health (14+ days)13.7% 3.1 pts below the national average of 16.8%
Mobility disability11% 3 pts below the national average of 14%
Poor physical health (14+ days)10.9% 2.6 pts below the national average of 13.5%
Self-care disability2.7% 1.3 pts below the national average of 4%
Utility shut-off threat5% 3.8 pts below the national average of 8.8%
Sleeps under 7 hours34.5% 1.9 pts below the national average of 36.4%
Stroke2.7% 0.7 pts below the national average of 3.4%
All natural teeth lost7.7% 5.3 pts below the national average of 13%
Vision disability4.4% 1.2 pts below the national average of 5.6%
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Business and employment

Census ZIP Code Business Patterns 2022

Business establishments1,344
People employed22,353
Annual payroll$1,526,745,000
Natural hazard risk

FEMA National Risk Index, estimated for this ZIP code from census tract data — the NRI is not published per ZIP.

Overall riskHigher than 87.2% of US census tracts
FEMA ratingRelatively Low to Very High across the 19 census tracts this ZIP code covers
Expected annual loss87.6 out of 100
Community resilience85.7 out of 100

By hazard

Score is out of 100 and is the area-weighted average across the census tracts this ZIP code covers. The rating beside it is the highest any one of those tracts carries.

Earthquake96.4Very High at its worst in this ZIP code
River flooding79.8Very High at its worst in this ZIP code
Landslide70.6Relatively High at its worst in this ZIP code
Drought62.1Relatively Moderate at its worst in this ZIP code
Coastal flooding54.4Relatively High at its worst in this ZIP code
Heat wave45Relatively Moderate at its worst in this ZIP code
Wildfire44.5Relatively High at its worst in this ZIP code
Tsunami28.4Very Low at its worst in this ZIP code
Tornado23.8Relatively Low at its worst in this ZIP code
Volcanic activity21.7Very Low at its worst in this ZIP code
Hail19.9Very Low at its worst in this ZIP code
Strong wind5.7Very Low at its worst in this ZIP code
Lightning4.7Very Low at its worst in this ZIP code
Winter weather2Very Low at its worst in this ZIP code
Compared with California and the United States

State and national columns are figures for those areas, not for this ZIP code. American Community Survey 2019–2023 five-year estimates

This ZIPCaliforniaUnited States
Median household income$137,194$96,334$78,538
Income per person$56,020$47,977$43,289
Poverty rate7%12%12.4%
Median home value$1,058,200$695,400$303,400
Median gross rent$2,713$1,956$1,348
Homeownership67%55.8%65%
Bachelor's degree or higher45.3%36.5%35%
Unemployment rate5%6.4%5.2%
Works from home17.7%15.5%13.5%
Born outside the US46.9%26.7%13.9%
Median age42.137.638.7
Climate

NOAA US Climate Normals 1991-2020, from the nearest weather station with a full year of records. The station and its distance are named above, because a station forty kilometres away describes somewhere else.

Weather stationFREMONT, CA US6 km away
Rain in a year16 in

Average high and low by month

January58.6°F / 42.6°F3 in rain
February61.4°F / 44.4°F3.17 in rain
March65.1°F / 46.4°F2.52 in rain
April67.7°F / 48.3°F1.22 in rain
May71.1°F / 51.9°F0.5 in rain
June75.3°F / 54.7°F0.16 in rain
July77.9°F / 56.8°F0 in rain
August78.2°F / 57.1°F0.02 in rain
September78.3°F / 56°F0.1 in rain
October73.3°F / 52°F0.69 in rain
November64.6°F / 46.2°F1.59 in rain
December58.4°F / 42.5°F2.97 in rain
Access to food

USDA Food Access Research Atlas, estimated for this ZIP code from census tract data. Each figure is the share of the ZIP code's land area that falls in a tract carrying that flag.

Low income and far from a supermarketNone of this ZIP code
Far from a supermarket73% of this ZIP code's area
No vehicle and far from a supermarket14% of this ZIP code's area
School districts

NCES Geographic Relationship File 2025, which states the association between each district and each ZIP code tabulation area directly. Elementary and secondary districts can cover the same ground, so shares need not total 100%.

New Haven Unified School District99.6% of this ZIP code's land area
Community and walkability

CDC/ATSDR Social Vulnerability Index 2022 and the EPA National Walkability Index, both estimated for this ZIP code from census tract data. Vulnerability figures are national percentile ranks, not measurements.

Overall social vulnerability54more vulnerable than 54% of US census tracts
Socioeconomic status31more vulnerable than 31% of US census tracts
Household characteristics37more vulnerable than 37% of US census tracts
Racial and ethnic minority status87more vulnerable than 87% of US census tracts
Housing type and transport75more vulnerable than 75% of US census tracts
Walkability11.9 out of 20Above average
Nearby ZIP codes

The closest ZIP codes by centre point, which is not the same as sharing a border.

94555 Fremont, CA1.8 km away
94536 Fremont, CA5.4 km away
94544 Hayward, CA5.5 km away
94560 Newark, CA6.1 km away
94545 Hayward, CA6.4 km away
94542 Hayward, CA7.7 km away
94543 Hayward, CA9.2 km away
94538 Fremont, CA9.5 km away
Location, counties and time zone

County shares from Census 2020 ZCTA relationship files. Time zone from the USDOT National Transportation Atlas, which renders the boundaries written into 49 CFR Part 71.

Alameda County100% of this ZIP code's land area
Time zonePacific (UTC-08:00 standard)
Daylight saving timeObserved
Land area19.63 sq mi
Water area1.12 sq mi
Population density3,471 people per sq mi
Latitude, longitude37.5895, -122.0497

Figures are published for this ZIP code or its Census tabulation area unless a section says otherwise. Estimates whose margin of error made them unreliable are omitted rather than shown. Sources: US Census Bureau, CDC, IRS.

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