<P> 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 . This number included a provision for the addition of one seat each for Arizona and New Mexico when they became states . </P>
<P> 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 . This number included a provision for the addition of one seat each for Arizona and New Mexico when they became states . </P>
in 1911 congress decided to fix the size of the house at
in 1911 congress decided to fix the size of the house at
435
435