Monday was the estimated busiest mailing day of the year for the United States Postal Service. By the end of the day the USPS says that it will process 611 million cards, letters and packages. Monday may be considered the busiest mailing day of the year but Thursday is the biggest delivery day of the year.

Monday was the estimated busiest mailing day of the year for the United States Postal Service. By the end of the day the USPS says that it will process 611 million cards, letters and packages.

That's right, 611 million. That works out to be almost two pieces of mail for every person in the country.

This information comes from the USPS.

So what does all of this holiday rush look like at our local post offices?

Our news partner, News10NBC went to the Rochester processing and distribution center in Henrietta to find out.

During the holiday season about 10 million packages will pass through the two USPS processing centers.

Karen Mazurkiewicz/Spokesperson for USPS: "There's a lot of elves back there that are behind the scenes that do a lot to deliver the holidays, and they're not the carriers, so you don't see them in the front. They're not at the retail counter selling you stamps. They're the people that really are the muscle and the push and the pull behind packages getting to their destination."

Monday is considered the busiest mailing day of the year, Thursday is the biggest delivery day of the year.

So make sure you check your porches and bring in those packages.