| People | Number reporting employment | Per cent |
| In professional occupations | In skilled occupations | Laborers, including farm laborers | Miscellaneous |
| Jewish | 590267 | 1.3 | 67.1 | 13.7 | 18.0 |
| Bohemian and Moravian | 60489 | 1.3 | 40.8 | 28.5 | 29.4 |
| Bulgarian, Servian and Montenegrin | 90991 | .1 | 3.3 | 92.0 | 4.6 |
| Croatian and Slovenian | 298324 | .1 | 5.0 | 86.4 | 8.5 |
| English | 249908 | 9.0 | 48.7 | 14.1 | 28.1 |
| Finnish | 123008 | .3 | 6.0 | 67.2 | 26.5 |
| French | 70038 | 9.3 | 34.5 | 26.0 | 30.2 |
| German | 458293 | 3.5 | 30.0 | 37.7 | 28.8 |
| Greek | 197718 | .3 | 7.7 | 86.2 | 5.8 |
| Irish | 376268 | 1.3 | 12.6 | 35.2 | 50.9 |
| Italian, North | 296622 | 1.1 | 20.4 | 66.5 | 12.0 |
| Italian, South | 1471659 | .4 | 14.6 | 77.0 | 7.9 |
| Lithuanian | 141540 | .1 | 6.7 | 76.1 | 17.2 |
| Magyar | 259276 | .5 | 8.6 | 77.5 | 13.4 |
| Polish | 748430 | .2 | 6.3 | 75.3 | 18.1 |
| Roumanian | 75531 | .2 | 2.7 | 93.8 | 3.3 |
| Russian | 69986 | 1.4 | 9.1 | 82.7 | 6.8 |
| Ruthenian | 128460 | .1 | 2.0 | 80.6 | 17.4 |
| Scandinavian | 475094 | 1.2 | 20.5 | 43.8 | 34.5 |
| Scotch | 89208 | 5.7 | 57.9 | 12.1 | 24.3 |
| Slovak | 290247 | .1 | 4.4 | 80.0 | 15.5 |
| Total | 7048953[3] | 1.4 | 20.2 | 79.3 | 19.1 |
| [1] All races with an immigration below 50,000 omitted. |
| [2] From Statistical Review of Immigration, p. 53. |
| [3] Total includes all races. |