SAN FRANCISCO (KRON) — Major changes to phone service in San Francisco, Marin and parts of San Mateo are only a few weeks away. It’s all part of the rollout of the new 628 area code which will coexist ...

The California Public Utilities Commission approved the new area code Thursday as part of an "overlay" plan for the same geographic region as the existing "415" area code. New telephone numbers will ...

The dramatic population growth of California can be measured in demographics, development and density but also in digits. Specifically, telephone area codes, which can hit a ceiling after there are no ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. (KTXL) — When telephone lines expanded ...