Riley County founded in 1855, was named after Bennett C. Riley. The county covers an area of 622.11 sq mi, with a population of more than 71.1K with a racial makeup including White, Native American, Black or African American, Asian, Hispanic or Latino, Pacific Islander, and others along with 22.1K households and 12.2K families. Manhattan is the selected county seat and the largest municipality of the county.

Rich assemblage of information on marriage volume number, obituary notice, demise facts, burial and cemetery details, origin and birth details, war and enlistment data, last will or probate specifics, World War I and II information, marriage and divorce details, American Civil War history, civil court case lookups, real estate and property facts, land and estate data and relative other points is now available with the Riley County records storage.