Starting Saturday, people with the 510 area code will have to work a little harder to get their calls through.

The new 341 code will co-mingle with the 510 area code in the western parts of Alameda and Contra Costa counties, CPUC officials said.

The East Bay is getting a new area code. It's 341. One expert says it's not big deal, but residents feel the 510 area code is a part of their identity.

The 510 was split again in 1998, when the new 925 area code came into existence on the east side of the East Bay hills.

First there was 510, then came 925, and now, parts of the East Bay will welcome a new telephone area code: 341.

Do you have a 510 area code? If you do, you will have to take a little extra step to dial out your phone calls starting Saturday, June 22.

The 510 area code, known to represent major portions of the East Bay, will no longer be given out to residents living in the area.

Next month telephone customers in the 510 area code must dial 1 plus the area code and the number to make any call to the 510 or the new 341 area code, according to the California Public Utilities ...

Despite dire predictions of a telephone number shortage in the Bay Area, a new study found that only half of the 16 million available numbers in the 415 and 510 area codes are being used. The ...

The new 341 code will co-mingle with the 510 area code in the western parts of Alameda and Contra Costa counties, CPUC officials said.