Composition of Colonial America
According to estimates by Thomas L. Purvis (1984), published in the European ancestry of the United States, gives the ethnic composition of the American colonies from 1700 to 1755. British ancestry in 1755 was estimated to be 63%, comprising 52% English and Welsh, 7.0% Scots-Irish, and 4% Scottish.[25]
Studies on origins, 1790
The ancestry of the 3,929,214 population in 1790 has been estimated by various sources by sampling last names in the very first United States official census and assigning them a country of origin.[14] There is debate over the accuracy between the studies with individual scholars and the Federal Government using different techniques and conclusion for the ethnic composition.[29][14] A study published in 1909 titled A Century of Population Growth by the Census Bureau estimated the British origin combined were around 90% of the white population.[30][31][32]
Another source by Thomas L. Purvis in 1984[33] estimated that people of British ancestry made up about 62% of the total population or 74% of the white or European American population.[33] Some 81% of the total United States population was of European heritage.[34] Around 757,208 were of African descent with 697,624 being slaves.[35]