Founded in the year 1907 and named in the favor of the maiden name of a member of the Constitutional Convention's mother, the Marshall County occupies an area of 427 sq mi approximately. Madill is the most densely populated city and the county seat. It is located in the south central border of Oklahoma State. A population of around 15.9K with marvelous combination of races including White, Native American, black or African American, Asian, Hispanic or Latino, Pacific Islander, and others including more than 5.3K housing units and 3.8K families are found residing in this county.

People can obtain huge amount of vital as well as public statistics including data on property deeds, naturalization reports, separation decree information, civil court facts, military service, probates, census, ancestral Social Security Numbers, civil war particulars, origin and death news, marital specifics and few other additional details that become essential to execute the extensive genealogical researches and online historical studies.