Oswego County was founded in the year 1816 and named after the Mohawk language word meaning "the outpouring", referring to the mouth of the Oswego River. The total area of this territory measures 1,312 sq mi. More than 0.12 million people with rich admixture of races including White, Asian, African American, Hispanic or Latino of any race, Native American, Pacific Islander and others reside in this county. It houses near about 45K households and 31K family units. Oswego is the county seat and the largest city.

Today Oswego County records repository is a wider collection with detailed data and better up gradation. Adequate information on varied statistics like detailed separation verdicts information, probates, ancestral SSN, census and death news, civil war particulars, marriage, immigration and naturalization details, birth history, military service, property deeds, civil court data and the likes can thus simply track the family roots and build one's own pedigree.