Union City, California
Union City is a city in Alameda County, California, with an estimated population of 65,414 in 2023. It sits at 37.6028, -122.0188 in the America/Los_Angeles time zone.
| Field | Value |
|---|---|
| Place name | Union City |
| Type | city |
| State | California (CA) |
| County | Alameda County |
| Population (2023 est.) | 65,414 |
| Land area | 19.40 sq mi (50.24 km²) |
| Coordinates | 37.6028, -122.0188 |
| Time zone | America/Los_Angeles |
| ZIP codes | 94587 |
| Telephone area codes | 510 |
ZIP codes and area codes for Union City
Union City covers 1 ZIP code: 94587. Telephone area codes serving the area: 510. Browse all ZIP codes in California for the full list.
Where is Union City?
Union City is located in California, in Alameda County. The coordinates above can be pasted directly into any map service. The nearest indexed places are listed below, which is a useful check when two states share a place name.
Nearby places
Hayward 8 km · CANewark 11 km · CAFremont 14 km · CAPleasanton 14 km · CADublin 17 km · CASan Leandro 17 km · CAMenlo Park 18 km · CAEast Palo Alto 18 km · CA
Other places in Alameda County
Oakland 436,504Fremont 226,208Hayward 155,675Berkeley 118,962San Leandro 85,784Livermore 82,908Alameda 75,353Pleasanton 74,653Dublin 69,128Newark 46,929
Frequently asked questions
What county is Union City, CA in?
Union City is in Alameda County, California.
What is the population of Union City, CA?
The 2023 Census Bureau estimate is 65,414.
What time zone is Union City in?
Union City is in the America/Los_Angeles time zone.