What area code is Union City, CA?
| City | Union City, CA |
|---|---|
| State | California |
| Area codes | 510 and 341 |
| Time zone | Pacific Time |
| Phone prefixes | 33 in our data |
Look up a Union City number
Union City’s area codes
| Area code | Also covers |
|---|---|
| 510 | Oakland, Fremont, Hayward and Berkeley |
| 341 | Fremont, Oakland, Hayward and Berkeley |
Other places in area code 510
- Oakland, CA
- Fremont, CA
- Hayward, CA
- Berkeley, CA
- San Leandro, CA
- Richmond, CA
- Alameda, CA
- Pinole, CA
- Hercules, CA
- Crockett, CA
Questions
- What is the area code for Union City, California?
- Union City uses 2 area codes: 510 and 341. 510 is the original or most common one, and newer numbers can be given 341.
- What time zone is Union City in?
- Union City is in Pacific Time.
- Do I need to dial the area code for a local call in Union City?
- Yes. Because Union City has more than one area code, local calls need all 10 digits: the area code plus the 7-digit number.
- How do I call Union City from another country?
- Dial your country’s exit code (011 from most places, 00 from Europe), then 1, then the area code and number: +1 510 XXX XXXX.