Everyone is scrambling to send last minute presents as Christmas is just one week away.
The US Post Office even opened up on Sunday to keep up with a high volume of packages coming in.
Every morning each package is scanned and sorted into zip codes, but for the first time ever USPS has it's carriers starting their routes at 4 a.m.
"Everybody orders something yesterday and everybody wants it today. Just be patient we're running carriers 16 hours a day getting that stuff delivered," said Scott Wayman, USPS Operations Manager.
Each 16 hour shift includes 65 employees all working as fast as they can,"They're working incredibly hard," said Wayman.
Wayman manages 113 post offices and says the Chico location is the 4th largest operation from the Oregon border to Fresno making the holiday season that much busier.
"I'd say our volume is up 75% than the normal time. When they come back after their first delivery room they will put their mail up and then they will go up with the rest of them. We try to get them off by 6 pm but then we have clerks in the back scanning packages for the next day at 4am," said Wayman.
Weaving in and out of a maze of packages, Wayman says the postal service has evolved throughout the years.
"We started with letters and flats and stuff like that, but the evolution of the post office is going towards packages and stuff like that," said Wayman.
Last holiday season USPS delievered over 850 million packages and this year carriers are expected to ship ship 100 million more.
"The networks are all full right now but they are moving fine, we have no delays just be patient and keep tracking your packages," said Wayman.
You have until this friday to have your presents delivered by Christmas Eve, but the longer you wait the more it'll cost you.