The number of Christmas cards sent last year is hard to determine an exact number. The last US cenus completed in 2007 put us at 111,162,259 households and the average household sends out about 28 Christmas cards. This would put the number sent at roughly 3,112,543,252. However, this number does not include electronic greeting cards only cards sent through the US mail. Until the next census we won’t have an accurate count on households and even with the census it is only a number for that exact moment in time as people move to this country, people get married , or divorced they each create a new household.