According to the U.S. Department of Agriculture, 34 percent of all land in the United States is owned by the Federal government.

Today, there are fewer than half as many Post Offices in the United States as there were in 1900. The reason for this is that improved service and high-speed travel have reduced the need for Post Offices in many small communities.

Before 1863 Postal Service in America was free.

If you've ever wondered what the numbers on your Social Security card signify, here is a breakdown of the mysterious code:

1. The first three numbers show what part of the country you applied from.

2. The next two numbers show, in coded form, the year you applied.

3. The last four numbers indicate your citizen's number kept on file by the government.