| People | Total | Number | Per cent |
| Male | Female | Male | Female |
| Irish | 439724 | 210686 | 229038 | 47.9 | 52.1 |
| Jewish | 1074442 | 607822 | 466620 | 56.6 | 43.4 |
| Bohemian and Moravian | 100189 | 57111 | 43078 | 57.0 | 43.0 |
| French | 115783 | 67217 | 48566 | 58.1 | 41.9 |
| German | 754375 | 448054 | 306321 | 59.4 | 40.6 |
| English | 408614 | 251421 | 157193 | 61.5 | 38.5 |
| Scandinavian | 586306 | 362467 | 223839 | 61.8 | 38.2 |
| Scotch | 136842 | 86938 | 49904 | 63.5 | 36.5 |
| Finnish | 151774 | 100289 | 51485 | 66.1 | 33.9 |
| Polish | 949064 | 659267 | 289797 | 69.5 | 30.5 |
| Slovak | 377527 | 266262 | 111265 | 70.5 | 29.5 |
| Lithuanian | 175258 | 123777 | 51481 | 70.6 | 29.4 |
| Magyar | 338151 | 244221 | 93930 | 72.2 | 27.8 |
| Ruthenian | 147375 | 109614 | 37761 | 74.4 | 25.6 |
| Italian North | 372668 | 291877 | 80791 | 78.3 | 21.7 |
| Italian South | 1911933 | 1502968 | 408965 | 78.6 | 21.4 |
| Croatian and Slovenian | 355543 | 284866 | 50677 | 84.9 | 15.1 |
| Greek | 216962 | 206306 | 10656 | 95.1 | 4.9 |
| Total[4] | 9555673 | 6641367 | 2914306 | 69.5 | 30.5 |
| [1] Arranged in order of percentage of females. |
| [2] Excluding all races with an immigration below 100,000. |
| [3] From Statistical Review of Immigration, p. 49. |
| [4] Total includes all races. |