Kosciusko County, Indiana 1850 CensusIndex
 | O |  |
| Individual | Page # | Line # | City/Township |
| O'BRIEN, Charlotte | 335b | 6 | Tippecanoe |
| O'BRIEN, Eliza | 360b | 10 | Washington |
| O'BRIEN, Elizabeth | 335b | 7 | Tippecanoe |
| O'BRIEN, Hannah | 335b | 5 | Tippecanoe |
| O'BRIEN, James N. | 360b | 12 | Washington |
| O'BRIEN, Sarah E. | 360b | 11 | Washington |
| O'BRIEN, Thomas L. | 335b | 4 | Tippecanoe |
| O'BRIEN, Wm. | 360b | 9 | Washington |
| O'BRIEN, Wm. N. | 335b | 8 | Tippecanoe |
| OAKLEY, Rudolph | 369b | 33 | Jackson |
| OAKS, Margaret | 383b | 16 | Clay |
| OAKS, Thomas J. | 383b | 17 | Clay |
| OAKS, Wm. P. | 383b | 15 | Clay |
| ODELL, Ellen | 321b | 4 | Vanburen |
| ODELL, Ellen | 321b | 5 | Vanburen |
| ODELL, Lydia | 321b | 6 | Vanburen |
| ODELL, Orris B. | 321b | 3 | Vanburen |
| OFFINEER, George | 385a | 41 | Franklin |
| OFFINEER, James A. | 385b | 1 | Franklin |
| OFFINEER, Mary A. | 385a | 42 | Franklin |
| OLINGER, Jacob | 376b | 2 | Clay |
| OLINGER, Josiah | 376b | 5 | Clay |
| OLINGER, Martha A. | 376b | 3 | Clay |
| OLINGER, Wm. H. | 376b | 4 | Clay |
| OLINGHOUSE, Catharine | 357a | 31 | Washington |
| OLINGHOUSE, Eli | 357a | 33 | Washington |
| OLINGHOUSE, Irzilla | 357b | 13 | Washington |
| OLINGHOUSE, Israel | 357b | 12 | Washington |
| OLINGHOUSE, John | 357b | 14 | Washington |
| OLINGHOUSE, Jonathan | 357a | 30 | Washington |
| OLINGHOUSE, Jonathan C. | 357b | 15 | Washington |
| OLINGHOUSE, Malinda | 357a | 32 | Washington |
| OLINGHOUSE, Philip | 357a | 34 | Washington |
| OLINGHOUSE, Temperance | 357a | 29 | Washington |
| OSBORNE, Clarissa | 393a | 29 | Franklin |
| OSBORNE, Clarissa E. | 393a | 31 | Franklin |
| OSBORNE, Hanah M. | 393a | 33 | Franklin |
| OSBORNE, Mary T. | 393a | 30 | Franklin |
| OSBORNE, Reuben | 393a | 28 | Franklin |
| OSBORNE, Sarah A. | 393a | 32 | Franklin |
| OSTRANDER, Amos | 346a | 37 | Plain |
| OSTRANDER, Ann | 346a | 36 | Plain |
| OSTRANDER, Benj. S. | 346a | 35 | Plain |
| OSTRANDER, Frances M. | 346a | 40 | Plain |
| OSTRANDER, Harriet | 346a | 39 | Plain |
| OSTRANDER, Maria | 346a | 38 | Plain |
| OTT, Jacob | 329b | 29 | Turkey Creek |
| OTT, John A. | 329b | 31 | Turkey Creek |
| OTT, Jonathan | 329b | 32 | Turkey Creek |
| OTT, Sarah | 329b | 30 | Turkey Creek |
| OURS, Eliza | 299b | 27 | Prairie |
| OURS, Wm | 299b | 26 | Prairie |
| OUTCELT, Elizabeth | 354a | 19 | Washington |
| OUTCELT, Harriet | 354a | 16 | Washington |
| OUTCELT, Jacob | 354a | 15 | Washington |
| OUTCELT, John W. | 354a | 17 | Washington |
| OUTCELT, Lilla R. | 354a | 18 | Washington |
| OVERSTREET, Jeremiah | 397b | 4 | Franklin |
| OVERSTREET, Mary E. | 397b | 7 | Franklin |
| OVERSTREET, Patra A. | 397b | 6 | Franklin |
| OVERSTREET, Permelia | 397b | 2 | Franklin |
| OVERSTREET, Stephen P. | 397b | 5 | Franklin |
| OVERSTREET, Thomas | 397b | 1 | Franklin |
| OVERSTREET, Thomas J. | 397b | 3 | Franklin |
Gene Andert / Fort Wayne, IN / gandert@mac.com