| Last Name | First Name | Occupation | Note | Address 1 | Address 2 |
| O'Brien | Mrs. Catharine | h 7 Union | |||
| O'Brien | Mrs. Ellen | h e s Steuben | s Arthur | ||
| O'Brien | Patrick | Locksmith | bds G. Stevenson's | ||
| O'Brien | Richard | Cigar Maker | h 7 Union | ||
| O'Brien | Terrence | h 38 First | |||
| O'Brien | Thomas | Blacksmith | h n s Blandina | 1 n First | |
| O'Brien | William | h 10 Hope | |||
| O'Conner | John | Tailor | 18 Elizabeth | res same | |
| O'Conner | John | Laborer | h 12 Blandina | ||
| O'Connell | William | Laborer | h 78 Bleecker | ||
| O'Donnell | Edward | Cordwainer | h e s Steuben | 8 s South | |
| O'Donnell | James A. | Scale Maker | bds 9 Deveraux | ||
| O'Hanlon | John | Attendant | Lunatic Asylum | bds same | |
| O'Hara | Dennis | Laborer | h Third | 1 n Jay | |
| O'Hara | Mrs. Elizabeth | Milliner and Dressmaker | 213 Genesee | res same | |
| O'Hara | John | h 213 Genesee | |||
| O'Hara | P. | Grocery and Provision Store | n e cor State and Columbia | res same | |
| O'Hern | Jerry | Pedlar | bds Clinton Hotel | ||
| O'Hern | Patrick | Cartman | h cor Second and Mary | ||
| Ohnmascht | Betsey | Widow of Daniel | h 19 Mary | ||
| O'Neil | Charles H. | Hardware Dealer | Of O'Neil & Co. | bds 29 Hotel | |
| O'Neil | Daniel | Laborer | h 76 Bleecker | ||
| O'Neil | Eliza | res s s Bristol | 3 e Garden | ||
| O'Neil | John | Clerk | 133 Genesee | bds 102 John | |
| O'Neil | John | Cartman | h w s Third | 3 ab Bleecker | |
| O'Neil | Michael | Tabacconist | h e s Saratoga | 3 s Columbia | |
| O'Neil | Owen | Of O'Neil & Co. | h 29 Hotel | ||
| O'Neil | William | Locksmith | h s s Bleecker | 2 w Third | |
| O'Shaughnassy | Michael | Laborer | h 19 Charlotte | ||
| Oley | Simon V. | Boot and Shoe Store | h 47 Fayette | 109 Genesee | |
| Opladen | Peter | Tailor | h 15 Breese | ||
| Orcutt | George | Baker | h e s Third | 5 ab Catharine | |
| Orcutt | Mrs. H. B. | Widow of Henry B. | h 3 First | ||
| Osborn | James N. | Tin and Coppersmith | h e s Oneida, 2 s Walker | cor Genesee and Seneca | |
| Osborn | John | Carpenter | bds 68 Catharine | ||
| Osborn | John | h 90 Whitesboro | |||
| Osborn | William | Book Agent | bds New England House | ||
| Oster | Peter | Steam W. Mills | h e s Schuyler | 5 s Court | |
| Ostrom | Henry B. | h w s Pine | 1 n Fayette | ||
| Ott | Henry | Cordwainer | h s s Columbia | 3 w Saratoga | |
| Ottaway | Edward E. | Attendant | Lunatic Asylum | bds Same | |
| Owens | Benjamin | Builder | h cor Lansing and First | shop 28 Hotel | |
| Owens | David | Baker and Confectioner | Of D. & T. M. O. | h cor Mary and Bridge | shop cor Broad and John |
| Owens | Edward | Steam W. Mills | bds R. Owen's | ||
| Owens | Edward R. | Carpenter | h n s Mandeville | ||
| Owens | Miss Ellen R. | Dressmaker | bds J. J. Davis's | ||
| Owens | Evan | Moulder | h 59 Liberty | ||
| Owens | Mrs. Frances | Boarding House | 76 Whitesboro | ||
| Owens | Henry E. | Clerk | Washington Hall | bds David Owens' | |
| Owens | James | Clerk | 80 Genesee | bds J. B. Owens' | |
| Owens | Job | Boarding House | 2 1/2 Carnahan | ||
| Owens | John | Laborer | bds York House | ||
| Owens | John B. | Proprietor, Forest Hill Cemetery Marble Works | Of O. & Newland | h n s Mary | 1 e john |
| Owens | John R. | Tailor | bds City Hotel | ||
| Own | Mrs. Mary | Widow | h s s Water | 1 e Potter | |
| Owens | Own | h 29 Carnahan | |||
| Owens | Richard | Steam W. Mills | h e s Wiley | 2 n Hamilton | |
| Owens | Richard | Painter | bds 79 Whitesboro | ||
| Owens | Richard U. | Proprietor | Owens' Saloon | h e West | ab Rutger |
| Owens | Robert | Tailor | h 85 Whitesboro | ||
| Owens | Thomas | Proprietor | Mechanic's Inn | 73 Broad | |
| Owens | Thomas M. | Painter | bds J. Williams' | ||
| Owens | William | Lumber Yard | Of O. & Howell | h 96 Whitesboro | |
| Owens | William | Watch and Clock Maker | Thomas' East Lane | ||
| Owens | William | Farmer | h s s Water | 5 e Potter | |
| Owens | William | Steam C. Mills | bds H. C. Stearns' |