| Oregon Federal Census Index 1930 | ||||
| Wheeler County | Series T626 | |||
| Name | Precinct | ED No. | Sheet No. | Line No. |
| Zachary, Bertha M. | Fossil | 4 | 1 | 11 |
| Zachary, Carl B. | Fossil | 4 | 1 | 9 |
| Zachary, Howard S. | Spray | 13 | 3 | 57 |
| Zachary, Lillie | Fossil | 4 | 1 | 10 |
| Zachary, Marda L. | Spray | 13 | 3 | 58 |
| Zachary, Rachel | Waterman | 16 | 1 | 38 |
| Zachary, Rachel | Winlock | 17 | 1 | 58 |
| Zdundick, George | Kinzua | 5 | 4 | 100 |
| Ziegar, Charles | Fossil - Fossil Town | 3 | 5 | 11 |
| Ziegar, Christina | Fossil - Fossil Town | 3 | 5 | 10 |
| Zimmer, Florence | Kinzua | 5 | 3 | 71 |
| Zimmer, Kathleen | Kinzua | 5 | 3 | 73 |
| Zimmer, Lee | Kinzua | 5 | 3 | 70 |
| Zimmer, Muriel Q. | Kinzua | 5 | 3 | 72 |