Oregon Territory
1850 Counties
| County | Description | Area in sq miles | Courts held at | Pop in 1850 |
| Benton | on St Mary's river | blank | blank | 418 |
| Clackamas | no description | blank | blank | 1,162 |
| Clark | no description | blank | Columbia City | 643 |
| Clatsop | western boundary, water by Columbia river | blank | Astoria | blank |
1850 Towns
| Name | What | Place | Pop | Other |
| Astoria | PO | Clatsop Co | ||
| Buteville | PO | Marion Co | ||
| Calapooia | PO | Linn Co | ||
| Cascade | PO | Clark Co | ||
| Catalamet | PO | Lewis Co | ||
| Champoag | PO | Marion Co | ||
| Chehalem | PO | Yam Hill Co | ||
| Cincinnati | PO | Polk Co | ||
| Columbia City | PO, CH | Clarke Co | seat of justice, water by Columbia river | |
| Dallas | PO | no county given | ||
| Dayton | PO | Yam Hill Co | ||
| Elkton | PO | Umpqua Co | ||
| Eminence | PO | Washington Co |