- Source: Jeffers Garden, Oregon
Jeffers Garden is an unincorporated community and census-designated place (CDP) in Clatsop County, Oregon, United States. Its population was 368 as of the 2010 census.
Astoria Marine Construction Company a site on the National Register of Historic Places in Clatsop County, Oregon is in Jeffers Garden on the Lewis and Clark River and the Jeffers Slough. Due to its historical importance the site is on the National Register of Historic Places in Clatsop County, Oregon.