The Constitution was ratified on June 21, 1788. The first day of the First Congress was March 4, 1789.
I think I'd argue that the House was "formed" the day of ratification, even though there weren't any members of the House yet.
They are annexed in by the President and House of Representatives.
Committee of the Whole
The number of representative in the U.S. House of Representatives is fixed at 435.
There are 435 representatives in the U.S. House of Representatives.
There are 15 Michigan Representatives in the US House of Representatives. There are 110 Representatives in the Michigan House of Representatives.
Illinois currently has 19 representatives in the House of Representatives.
The lower house of Congress is called the House of Representatives. Although, the United States does not really use terms like that.
The U.S House has 435 representatives.
House of Representatives
The House of Representatives.
There are 435 representatives in the U.S. House of Representatives.
Congress is made up of the Senate and the House of Representatives.