The United States has 27 amendments to its Constitution.

In the United States the laws of the land are based on the Constitution. The first ten amendments to the Constitution contains the Bill of Rights. This lists the rights of all citizens of the United States.

This is the complete list of the ratified and unratified amendments to the United States Constitution which received the approval of the United States Congress. Twenty-seven amendments have been ratified since the original signing of the Constitution, the first ten of which are known collectively as the Bill of Rights. The procedure for amending the United States Constitution is governed by Article V of the original text. There have been many other proposals for amendments to the United States Constitution introduced in Congress, but not submitted to the states.

The United States Constitution has 27 Amendments as of year 2010.

The Constitution of the United States of America.