In 1845, Oregon County was established and was named in the favor of the Oregon Territory. With an area of 791.59 sq mi, it has its county seat at Alton. A population of more than 10.8K with an advanced amalgamation of races including White, Native American, black or African American, Asian, Hispanic or Latino, Pacific Islander, and others with more than 4.2K households and 3K families dwell in this county. Thayer is the largest city of Oregon situated in the South Central portion of Missouri.

Vast treasure of records regarding American Civil War history, burial and cemetery details, census data, immigration and naturalization specifics, World War I and II information, real estate and property facts, demise facts, obituary notice, origin and birth details, marriage volume number, last will or probate specifics, civil court case lookups, land and estate data, marriage and divorce details, war and enlistment data and so on, varied prolific hints and an enriched resource of the Oregon County data supply widely help the broad genealogical explorations and sufficient chronological research.