California / Census place 0681204

Union City

A Census profile of the people, homes, and daily patterns that shape this place.

Official Census name: Union City city

At a glance

A city in numbers.

Population
65,282
2025 estimate
Annual change
-0.6%
Population estimate
Density
3,365/sq mi
19.4 sq mi land area
Median age
43 years
ACS 5-year estimate

Living here

The everyday equation.

Households, homes, education, and the time it takes to get around.

Median household income
$133,715
Median home value
$1,104,900
Median gross rent
$2,713
Bachelor’s degree or higher
45.1%
Typical commute
31.9 min
Public transit commute
3.8%

Climate normals

The long view of weather.

Thirty-year averages, not a forecast. Temperature and precipitation describe the typical conditions recorded from 1991 through 2020.

Representative station: HAYWARD AIR TERMINAL (7 mi from place center)
Average high
68.5°F
Average low
50.8°F
Annual rainfall
16"
Annual snowfall
0"

Month by month

A year in Union City.

Typical high and low °F
JFMAMJJASOND
Typical precipitation inches
J
F
M
A
M
J
J
A
S
O
N
D

Data vintage

Population is from the 2025 Population Estimates Program. Household, housing, education, and commute data are from the 2020-2024 American Community Survey 5-year release.

Similar places

More places to consider.

Selected by the closest mix of population, density, median home value, and average annual high.

CA

Gilroy, CA

Population, housing, work, and travel data for this Census place.

Population
60,764
Median home
$1,027,400
CA

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Population, housing, work, and travel data for this Census place.

Population
47,895
Median home
$1,142,800
CA

Walnut Creek, CA

Population, housing, work, and travel data for this Census place.

Population
70,012
Median home
$1,057,300

Keep exploring

Compare Union City with Gilroy