Seneca County, Ohio Genealogy Guide

Seneca County, Ohio (Map It) was created on April 1, 1820 from Huron County and Sandusky County. This county was named for the Seneca Indians, who had a reservation in the county area at the time . Learn More About State of Ohio History

Seneca County is bordered by Sandusky County (north), Huron County (east), Crawford County (southeast), Wyandot County (southwest), Hancock County (west), Wood County (northwest) .. A Map of Seneca County, Ohio contains detailed information about roads and boundaries, these maps may include rural communities, churches, and cemeteries.

Seneca County Cities and Towns include Bellevue, Fostoria, Tiffin, Attica, Bettsville, Bloomville, Green Springs, New Riegel, Republic. Other communities include Alvada, Bascom, Flat Rock, Kansas, Melmore, Old Fort. A Map of Seneca County, Ohio contains detailed information about roads and boundaries, these maps may include rural communities, churches, and cemeteries.

Seneca County Townships include Adams, Big Spring, Bloom, Clinton, Eden, Hopewell, Jackson, Liberty, Loudon, Pleasant, Reed, Scipio, Seneca, Thompson, Venice.

Seneca County, Ohio Courthouse Records

Seneca County, Ohio Courthouse
Seneca County, OH Courthouse
Seneca County Townships Map
Seneca County, OH Township Map

The Seneca County Courthouse is located in Tiffin, Ohio. Learn More About State of Ohio Court, Tax, Land and Probate Records.

Please contact the each clerk's department to confirm mailing address, hours, fees and other information before visiting or requesting information because contact information sometimes changes.  The Clerk's Office DOES NOT DO RESEARCH.  The documents are available to interested parties, barring confidential issues.  Most staff will assist people in finding the materials, but it is up to the individual to do the research.

The following dates indicates what vital, land, probate, and court records are in Seneca county. The date listed for each category of record is usually the earliest registration filed. The earliest date does not indicate that there are numerous records for that year and does not mean that all such events were actually registered.

  • Seneca County Clerk of Probate Court has Marriage Records from 1841 and Probate Records from 1828. The County Clerk of Probate Court handles the probating of wills, estate administrations, trusts, guardianships, adoptions, birth corrections, delayed birth registrations and issues marriage licenses. The Probate Court is that the Probate Judge is the ex-officio Clerk of Courts, thus, the Court performs all the duties as its own Clerk of Courts.
  • Seneca County Recorder has Land Records from 1821. The County Recorder has the duty of keeping specific records which may include: deeds, mortgages, military discharges, plats, etc.
  • Seneca County Clerk of Court of Common Pleas has Court Records from 1824. The County Clerk of Court of Common Pleas is responsible for duties that include filing, docketing, indexing, and preserving all court pleadings for civil, felony criminal and domestic relations cases. Other services provided by the Clerk of Court of Common Pleas are administering oaths, keeping naturalization records, and recording and retention of coroner records.
  • The Seneca County Health Department has Birth & Death Records from 1908-Present. For birth and death records prior to Dec. 20, 1908, contact the Probate Court of this county.

Seneca County, Ohio Census Records

Seneca County, Ohio Vital Records

Seneca County, Ohio Resources

Seneca County, Ohio External Links