"This shooting has caused each victims family, friends and co-workers, along with the first responders, to suffer an enormous personal tragedy. We must stand strong and offer support to each individual affected by this senseless attack", said Sheriff John McMahon.
The victims were listed as living in the area around San Bernardino.
Victims:
Shannon Johnson, 45, Los Angeles
Bennetta Bet-Badal, 46, Rialto
Aurora Godoy, 26, San Jacinto
Isaac Amanios, 60, Fontana
Larry Kaufman, 42, Rialto
Harry Bowman, 46, Upland
Yvette Velasco, 27, Fontana
Sierra Clayborn, 27, Moreno Valley
Robert Adams, 40, Yucaipa
Nicholas Thalasinos, 52, Colton
Tin Nguyen, 31, Santa Ana
Juan Espinoza, 50, Highland
Damian Meins, 58, Riverside
Michael Wetzel, 37, Lake Arrowhead
Meanwhile, US President Barack Obama has remembered the victims of the San Bernardino shooting during the National Christmas Tree Lighting ceremony in Washington.
The First Family lit the National Christmas Tree and kicked off the holiday season at the 93rd annual National Christmas Tree Lighting on the Ellipse at President's Park in Washington.
During the ceremony US President Barack Obama offered his condolences to the families of victims of a mass shooting in San Bernardino, California on Wednesday.
Authorities have said that Syed Rizwan Farook, 28, and Tashfeen Malik, 27, both reportedly Muslims, stormed a holiday party attended by San Bernardino County employees, killing 14 people and wounding 21.
President Barack Obama pauses as he speaks during the National Christmas Tree Lighting ceremony Source: AAP
"This is of course the most wonderful time of the year. But we would be remiss not to take a moment to remember our fellow Americans whose hearts are heavy tonight. Who grieve for loved ones, especially in San Bernardino, California," said Obama.
"Their loss is our loss too. For we're all one American family. We look out for each other, in good times and in bad."
Academy Award-winner actress Reese Witherspoon hosted traditional festivities, while David Crosby, Stephen Stills, and multi-platinum selling artists Fall Out Boy were among the star-studded performers.
Retro pop-soul singer Andra Day and Kelsea Ballerini also took the stage while the United States Coast Guard Band serenaded the audience holiday favorites.
Miss Piggy also attended the festivities and entertained the audience by reading 'Twas the Night Before Christmas' with First Lady Michelle Obama.
The holiday tradition of lighting the National Christmas Tree was started by President Calvin Coolidge in 1923, in an effort to inspire people from all backgrounds to connect, celebrate, and support America's national parks and community-based programs.
Muslims 'heartbroken' by California shootings
Democratic Presidential candidate Hillary Clinton says that the "vast majority of Muslims" are "heartbroken" by the California shooting.
She has also criticised Congress for failing to restrict gun sales to people on terrorism watch list.
The couple behind the shootings were killed in a subsequent shootout with police.
Syed Rizwan Farook was described by authorities as described as a second-generation American born in Illinois and raised by Pakistani parents. Tashfeen Malik was born in Pakistan and lived in Saudi Arabia until she was introduced to Farook.
At an election rally in New Hampshire, Clinton said authorities were still determining a motive for the attack.
A group of men embrace in prayer outside the crime scene where the suspects in the shooting at the Inland Resource Center
"We don't know yet everything about this specific attack. President Obama spoke this morning about the possibility that it was terror related. I know that everyone from the F.B.I. to local police are doing everything they can to find answers, tracking every lead looking at every angle. And I'm confident that they will determine what happened and take whatever steps are necessary to prevent future attacks," she said.
The shootings have heightened fears amongst Muslim-Americans of a backlash, particularly during an election season in which some candidates have been accused of making generalized attacks on the community.
Clinton said that it was wrong to blame all Muslims for the actions of a few.
"But I also want to note this: it's important to remember - and I know this from the work I did as a senator, particularly with law enforcement - the vast majority of Muslim Americans are just as concerned and heartbroken about this as anyone else. And no matter what motivation these killers, these murderers had, we can say one thing for certain - they should not have been able to do this.
"We cannot go on with losing ninety people a day to gun violence. And I don't believe we can stop every incident of gun violence but we sure can stop a lot of them. And we need to take action now. No parent should have to worry about going to a holiday party after work or about sending their kids to school or going to a movie theater or even going to church," she said.
Congress should act to stop gun violence, said Clinton, by putting in place gun control restrictions supported by most Americans.
"Congress has failed to pass even the most obvious measures despite the fact ninety two percent of Americans support these measures, eighty three percent of gun owners support them. So just what will it take for Congress to overcome the intimidation of the gun lobby and do something as sensible as making sure people on the terrorist watch list can't buy weapons," she said.
The San Bernardino attack was the deadliest U.S. mass shooting since the Sandy Hook Elementary School massacre three years ago.
Some Muslims questioned whether this week's shooting will embolden supporters of Republican frontrunner Donald Trump, who has backed the idea of requiring all Muslims living in the United States to register in a special database as a counter-terrorism measure.
Critics have also accused Trump of stirring resentment toward Muslims by asserting that he saw thousands of Muslims in New Jersey celebrating the destruction of the World Trade Center towers on Sept. 11, 2001. That claim has been disputed by public officials.
