| 1920 | John Robert Johnston | Head | 73 | Own | White | Married | Ireland | House | Carpenter | |
| Annie E Johnston | Wife | 68 | | White | Married | Pennsylvania | | | |
| Joshua T Johnston | Son | 40 | | White | Married | Pennsylvania | | | |
| Eliza Jane Johnston | Daughter | 33 | | White | Single | Pennsylvania | Opticians | Clerk | |
| Charles F Johnston | Son | 38 | | White | Single | Pennsylvania | Post Office | Clerk | |
| Eleana L Brown | Granddaughter | 17 | | White | Single | Pennsylvania | | | |
| 1930 | John Robert Johnston | Head | 86 | Own | White | Married | North Ireland | General | Laborer | |
| Annie E Johnston | Wife | 78 | | White | Married | Pennsylvania | | | |
| John Robert Johnston, Jr. | Son | 44 | | White | Widowed | Pennsylvania | P RR | Foreman | |
| Eliza Jane Johnston | Daughter | 32 | | White | Single | Pennsylvania | | Opitican | |
| Catharine R Johnston | Niece | 14 | | White | Single | Pennsylvania | | | |
| Louisa W Johnston | Niece | 7 | | White | Single | Pennsylvania | | | |
| 1940 | Eliza Jane Johnston | Head | 51 | Own | White | Single | Pennsylvania | Opticians Office | Clerk | |
| John Robert Johnston, Jr. | Brother | 53 | | White | Married | Pennsylvania | | | |
| Catharine R Johnston | Niece | 24 | | White | Single | Pennsylvania | | New Worker | |
| Louisa W Johnston | Niece | 17 | | White | Single | Pennsylvania | | | |
| 1950 | Eliza Jane Johnston | Head | 60 | | White | Never | Pennsylvania | Optical Co | Clerical | |