Population Distribution by Ethic Category: 1790 . Ethnic Category Number Percent English 2,100,000 53.76% Ulster Scot-Irish 300,000 7.68% German 270,000 6.91% Scottish 150,000 3.84% Dutch 100,000 2.56% Walsh 10,000 0.26% French 15,000 0.38% Jews 2,000 0.05% Swedish 2,000 0.05% Other 200,000 5.12% African 757,000 19.38% TOTAL 3,906,000 100.0%. What % of the population came from the British Isles (i.e., Great Britain