The baby girl, named Liliana Noel, was born two seconds past midnight at Kaiser Permanente San Jose Medical Center, spokesman Karl Sonkin said. She weighed 8 pounds 7 ounces at birth and was 21 inches long.
She has two older sisters who are just as excited as mom and dad about the new addition to the family.
"She was due on the 31st," Melinda Tiopan said. "So we always knew it could be a December or January birthday. We didn't know which year or what she would be, so lots of surprises. We didn't think a new year's baby though."
Another baby girl was also born at Kaiser Permanente San Jose Medical Center at 12:01 a.m., Sonkin said. She weighed 5 pounds 15 ounces at birth and was 18 inches long.
In San Francisco two baby boys were born at separate hospitals moments into 2014. A baby boy was born at Kaiser Permanente San Francisco Medical Center eight seconds past midnight, spokesman Joe Fragola said.
Another baby boy was born at California Pacific Medical Center's California campus at 12:01 a.m., hospital spokeswoman Barbara Dunn said. His mother, Mei Yang of Hong Kong, has yet to give him name, Dunn said. He weighed 6 pounds 15 ounces at birth and was 19 inches long. Drs. Yuan-Da Fan and Lauri Green delivered the boy by cesarean section, Dunn said.
(ABC7 News contributed to this report)