| 1900 | Florant Millwood Justice | Head | 36 | Own | White | Married | Pennsylvania | | Merchant | |
| Mary Syng Justice | Wife | 37 | | White | Married | Pennsylvania | | | |
| Marion T Justice | Daughter | 12 | | White | Single | Pennsylvania | | at school | |
| Caroline L Justice | Daughter | 11 | | White | Single | Pennsylvania | | at school | |
| Sue Melanie Justice | Daughter | 9 | | White | Single | Pennsylvania | | at school | |
| Elizabeth S Justice | Daughter | 3 | | White | Single | Pennsylvania | | | |
| Albert Stepney Letchworth | Father-in-law | 78 | | White | Married | Pennsylvania | | Capitalist | |
| Caroline Justice Letchworth | Mother-in-law | 71 | | White | Married | Pennsylvania | | | |
| Elizabeth T Letchworth | Sister-in-law | 47 | | White | Single | Pennsylvania | | | |
| Howard Mack | Servant | 38 | | White | Single | Pennsylvania | | | |
| 1910 | Florant Millwood Justice | Head | 45 | Own | White | Married | Pennsylvania | Wholesale Jewelry | President | |
| Mary Syng Justice | Wife | 47 | | White | Married | Pennsylvania | | | |
| Marion T Justice | Daughter | 22 | | White | Single | Pennsylvania | | | |
| Caroline L Justice | Daughter | 21 | | White | Single | Pennsylvania | | | |
| Sue Melanie Justice | Daughter | 19 | | White | Single | Pennsylvania | | | |
| Elizabeth S Justice | Daughter | 13 | | White | Single | Pennsylvania | | | |
| Elizabeth T Letchworth | Sister-in-law | 56 | | White | Single | Pennsylvania | | | |
| Howard Mack | Hired man | 47 | | White | Single | Pennsylvania | House | Laborer | |
| 1920 | Florant Millwood Justice | Head | 55 | Own | White | Widowed | Pennsylvania | Silverware | Manufacturer | |
| Marion T Justice | Daughter | 31 | | White | Single | Pennsylvania | Art | Illustrator | |
| Caroline L Justice | Daughter | 29 | | White | Single | Pennsylvania | Private school | Teacher | |
| Elizabeth S Justice | Daughter | 23 | | White | Single | Pennsylvania | | | |
| Elizabeth T Letchworth | Sister-in-law | 66 | | White | Single | Pennsylvania | | | |
| Howard Mack | Servant | 57 | | White | Single | Pennsylvania | Private family | Servant | |
| 1930 | Florant Millwood Justice | Head | 65 | Own | White | Widowed | Pennsylvania | Wholesale Store | President | |
| Marion T Justice | Daughter | 42 | | White | Single | Pennsylvania | Independent | Illustrator | |
| Caroline L Justice | Daughter | 40 | | White | Single | Pennsylvania | Private School | Teacher | |
| Elizabeth S Justice | Daughter | 34 | | White | Single | Pennsylvania | | | |
| Howard Mack | Servant | 67 | | White | Single | Pennsylvania | Private family | General Houseman | |
| 1940 | Marion T Justice | Head | 52 | Rent | White | Single | Pennsylvania | | | |
| Caroline L Justice | Sister | 51 | | White | Single | Pennsylvania | Private school | School teacher | |
| Florence Ross | Lodger | 54 | | White | Widowed | Pennsylvania | | | |
| 1950 | Marion T Justice | Head | 62 | | White | Never | Pennsylvania | Companion | Companion | |
| Caroline L Justice | Sister | 60 | | White | Never | Pennsylvania | Agnes Irwin School | School Teacher | |