when did the house of representatives reach 435
Apportionment Act of 1911 The Apportionment Act of 1911 (Pub.L. 62–5, 37 Stat. 13) was an apportionment bill passed by the United States Congress on August 8, 1911. The law set the number of members of the United States House of Representatives at 435, effective with the 63rd Congress on March 4, 1913.[1] This number included a provision for the addition of one seat each for Arizona and New Mexico when they became states.
United States House of Representatives The composition and powers of the House are established by Article One of the United States Constitution. The House is composed of representatives who sit in congressional districts which are allocated to each of the 50 states on a basis of population as measured by the U.S. Census, with each district entitled one representative. Since its inception in 1789, all representatives are directly elected. The total number of voting representatives is fixed by law at 435.[1] As of the 2010 Census, the largest delegation is that of California, with fifty-three representatives; seven states have the smallest delegation possible, a single representative: Alaska, Delaware, Montana, North Dakota, South Dakota, Vermont, and Wyoming.[2]