Oskaloosa, Missouri
Oskaloosa is an unincorporated community in northwest Barton County, in the U.S. state of Missouri. The community is one mile east of the Missouri-Kansas border. The town of Arcadia, Kansas lies adjacent to the border in Kansas. Missouri Route K passes just north of the community and Dry Wood Creek flows past one mile to the east. History. A post office called Oskaloosa was established in 1894, and remained in operation until 1953. The community was named after Oskaloosa, Iowa, the native home of a share of the first settlers.