| Surname | First | Age | Relation | Born | Occupation | Ward | District | Dwelling | Family |
| O'Hearn | Daniel | 85 | bro | Ireland | laborer | 7 | West | 63 | 94 |
| O'Hearn | Julia | 22 | bdr | Ireland | 7 | West | 63 | 94 | |
| O'Hern | James | 34 | bdr | Ireland | moulder | 7 | East | 95 | 141 |
| O'Hern | Thomas | 10 | bdr | Renssselaer | 7 | East | 95 | 141 | |
| O'Keefe | Bella M. | 3 | dgt | Renss | 7 | East | 238 | 399 | |
| O'Keefe | Daria H. | 7 | son | Renss | 7 | East | 238 | 399 | |
| O'Keefe | Delia F. | 5 | dgt | Renss | 7 | East | 238 | 399 | |
| O'Keefe | Johanna | 20? | wife | Ireland | 7 | East | 238 | 399 | |
| O'Keefe | John W. | 1 | son | Renss | 7 | East | 238 | 399 | |
| O'Keefe | Michael | 32 | head | Ireland | liquor merchant | 7 | East | 238 | 399 |
| O'Leary | Mary E. | 15 | svnt | NYS | servant | 7 | West | 90 | 141 |
| O'Mally | Clara | 3 | dgt | Renss | 7 | East | 142 | 234 | |
| O'Mally | Gamble | 1 | son | Renss | 7 | East | 142 | 234 | |
| O'Mally | James | 13 | son | Eng | 7 | East | 142 | 234 | |
| O'Mally | Josephine | 5 | dgt | Renss | 7 | East | 142 | 234 | |
| O'Mally | Maggie | 8 | dgt | Renss | 7 | East | 142 | 234 | |
| O'Mally | Mary | 31 | wife | Ire | 7 | East | 142 | 234 | |
| O'Mally | Thomas | 34 | head | Ire | commercial travellor | 7 | East | 142 | 234 |
| Oneil | Charles | 53 | head | Ireland | cigar manufacturer | 7 | East | 152 | 249 |
| Oneil | Lydia I | 24? | wife | Renss | 7 | East | 152 | 249 | |
| O'Neil | Charles H. | 17 | son | Renss | 7 | East | 233 | 394 | |
| O'Neil | Delia | 48 | wife | Ireland | 7 | East | 233 | 394 | |
| O'Neil | George | 19 | son | Renss | clerk in grocery | 7 | East | 233 | 394 |
| O'Neil | Liza E. | 21 | dgt | Renss | 7 | East | 233 | 394 | |
| O'Neil | Thomas | 50 | head | Ireland | ? & vinegar mfr | 7 | East | 233 | 394 |
| O'Neil | Thomas | 8 | son | Renss | 7 | East | 233 | 394 | |
| Ostrander | Alma | 32 | wife | ?? | 7 | East | 264 | 445 | |
| Ostrander | Ettie | 3 | dgt | NYS | 7 | West | 31 | 55 | |
| Ostrander | George H | 10 | inmate | Renss | Orphan Asylum | 7 | West | 158 | 260 |
| OStrander | George L. | 1y6m | son | Renss | 7 | East | 264 | 445 | |
| Ostrander | James | 35 | head | NYS | Laborer | 7 | West | 31 | 55 |
| Ostrander | Jane | 30 | wife | NYS | 7 | West | 31 | 55 | |
| Ostrander | John | 8 | inmate | Renss | Orphan Asylum | 7 | West | 158 | 260 |
| OStrander | John | 52 | head | NY | carpenter | 7 | East | 264 | 445 |
| OStrander | John | 4 | son | Renss | 7 | East | 264 | 445 | |
| Ostrander | William | 5 | inmate | Renss | Orphan Asylum | 7 | West | 158 | 260 |
| O'Sullivan | Mary | 21 | svnt | Ireland | 7 | East | 154 | 251 | |
| Overtocker? | Albert | 55 | head | Renss | laborer | 7 | East | 196 | 330 |
| Overtocker? | Catherine | 46 | wife | Renss | 7 | East | 196 | 330 | |
| Overtocker? | Elizabeth | 8 | dgt | Renss | 7 | East | 196 | 330 | |
| Packard | Georgia A | 24 | wife | Rensss | 7 | East | 129 | 213 | |
| Packard | Henry C | 28 | head | NY | harness maker | 7 | East | 129 | 213 |
| Painton? | Carrie | 26 | dgt | Rens | 7 | West | 74 | 115 | |
| Painton? | Freddy | 6 | son | Rens | 7 | West | 74 | 115 | |
| Paris | Delia | 28 | dgt | NY | 7 | East | 71 | 104 | |
| Paris | Emma | 22 | dgt | NY | 7 |