SAN FRANCISCO (KGO) -- If you have a phone number in the 510 area code, you'll have to dial a "1" when making local calls starting next Saturday.
The change will allow the new 341 area code to share the same territory as 510.
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It will still cost the same for 510 customers to call people within the same area code.
The 341 area code is being added because 510 numbers are in short supply.
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The new dialing policy starts on June 22.
A person uses a cellphone in an undated file photo. (Shutterstock Photo)