With an estimated area of 573 sq mi, O'Brien County was founded in 1851. Named in the honor of William Smith O'Brien, a leader for Irish independence, the county has a total population of over 14.3K with a rich blend of different and diverse races including White, Native American, black or African American, Asian, Hispanic or Latino, Pacific Islander, and others with more than 6K households and 3.9K families. Primghar forms the county seat of the county.

One of the most desired and detailed records site of O'Brien County, State of Iowa, is now offered at your footstep just within a few minutes that helps to exfoliate the lineal facts on war and enlistment data, obituary notice, origin and birth details, demise facts, burial and cemetery details, marriage volume number, marriage and divorce details, immigration and naturalization specifics, American Civil War history, census data, real estate and property facts, last will or probate specifics, civil court case lookups, World War I and II information, land and estate data and the likes.