Jefferson is a city in Marion County, Oregon, United States. It was founded in 1870. As of the 2020 United States census, 3,327 people lived there.
Jefferson is a city in Marion County, Oregon, United States. It was founded in 1870. As of the 2020 United States census, 3,327 people lived there.
Municipalities and communities of Marion County, Oregon, United States | ||
|---|---|---|
| Cities |  | |
| CDPs | ||
| Unincorporated communities | ||
| Ghost towns | ||
| Indian reservation | ||
| Footnotes | ‡This populated place also has portions in an adjacent county or counties | |
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