County was created out of Walla Walla County
on November 11, 1875
It is named after the Columbia River.
The county seat is at Dayton, which is also
the county's largest city.
Towns and CDP's
* Starbuck, * Huntsville
* Alto * Turner * Marengo * Covello *
Whetstone * Delany * Grange City * Jackson *
Relief * Menoken * Longs * Perry * Gross
have mailing lists set up so that you can read
about updates, discuss your families and connect
with other researchers who are looking in the
same area as you.
Don't Miss Another Update!
Join our Mailing Lists to be notified of
Our Pacific Mailing List covers
California | Oregon | Washington | Alaska | Hawaii
* Whitman County, Washington - north
* Garfield County,
* Wallowa County, Oregon - southeast
* Umatilla County, Oregon - southwest
* Walla Walla County,
* Franklin County,
to bookmark us and keep checking back for new
additions to the sites.