Seneca County, Ohio Genealogy

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Guide to Seneca County, Ohio ancestry, genealogy and family history, birth records, marriage records, death records, census records, family history, and military records.

County Facts
County seat: Tiffin
Organized: April 1, 1824[1]
Parent County(s): Huron, Logan, Sandusky[2]
Neighboring Counties
Sandusky  • Huron  • Crawford  • Wyandot  • Hancock  • Wood
See County Maps
Seneca County, Ohio Courthouse.jpg
Location Map
OH seneca.png

County Information[edit | edit source]

Description[edit | edit source]

The county was named after the Seneca Indian Tribe. It is located in the Northcentral area of the state.[3]

County Courthouse[edit | edit source]

Seneca County Courthouse
103 S Washington St
Tiffin, OH 44883
Phone: 419-447-0671
Seneca County Website

Probate Judge has birth, marriage, and probate,
County Health Department has death records;
Clerk Court has divorce and court records from 1826;
County Recorder has land records[4]

Seneca County, Ohio Record Dates[edit | edit source]

Information for this chart was taken from various sources, often containing conflicting dates. This information should be taken as a guide and should be verified by contacting the county and/or the state government agency.

Known Beginning Dates for Major County Records[5]
Birth* Marriage Death* Court Land Probate Census
1867 1841 1867 1826 1821 1828 1820
Statewide registration for births and deaths started in 1908. General compliance year is unknown.

Record Loss[edit | edit source]

  • 1841 A courthouse fire may have damaged or destroyed some records.

For suggestions about research in places that suffered historic record losses, see:

Boundary Changes[edit | edit source]

Populated Places[edit | edit source]

For a complete list of populated places, including small neighborhoods and suburbs, visit Hometown Locator. The following are the most historically and genealogically relevant populated places in this county: [8]

Unincorporated communities
Census-designated places

History Timeline[edit | edit source]

Resources[edit | edit source]

Bible Records[edit | edit source]

For an extensive list of resources for Bible Records see Ohio Bible Records.

Biographies[edit | edit source]

Business, Commerce, and Occupations[edit | edit source]

Cemeteries[edit | edit source]

Cemeteries of Seneca County, Ohio online and in print
Tombstone Transcriptions Online
Tombstone Transcriptions in Print (Often more complete)
List of Cemeteries in the County
See Ohio Cemeteries for more information.


Census Records[edit | edit source]

Historical populations
Census Pop.
1830 5,159
1840 18,128 251.4%
1850 27,104 49.5%
1860 30,868 13.9%
1870 30,827 −0.1%
1880 36,947 19.9%
1890 40,869 10.6%
1900 41,163 0.7%
1910 42,421 3.1%
1920 43,176 1.8%
1930 47,941 11.0%
1940 48,499 1.2%
1950 52,978 9.2%
1960 59,326 12.0%
1970 60,696 2.3%
1980 61,901 2.0%
1990 59,733 −3.5%
2000 58,683 −1.8%
2010 56,745 −3.3%
Source: "".

Church Records[edit | edit source]

Church records and the information they provide vary significantly depending on the denomination and the record keeper. They may contain information about members of the congregation, such as age, date of baptism, christening, or birth; marriage information and maiden names; and death date. For general information about Ohio denominations, see Ohio Church Records.
List of Churches and Church Parishes


Court Records[edit | edit source]

Directories[edit | edit source]

Emigration and Immigration[edit | edit source]

Ethnic, Political, and Religious Groups[edit | edit source]

Funeral Homes[edit | edit source]

Genealogies[edit | edit source]

Guardianship[edit | edit source]

Land and Property Records[edit | edit source]

Land and property records can place an ancestor in a particular location, provide economic information, and reveal family relationships. Land records include: deeds, abstracts and indexes, mortgages, leases, grants and land patents.

See Ohio Land and Property for additional information about early Ohio land grants. After land was transferred to private ownership, subsequent transactions were usually recorded at the county courthouse and where records are currently housed.

Local Histories[edit | edit source]

Local histories are available for this county. County histories may include biographies, church, school and government history, and military information. For more information about local histories, see Ohio Local Histories.

Maps and Gazetteers[edit | edit source]

Wood CountySandusky CountyErie CountyHancock CountyWyandot CountyCrawford CountyHuron CountyOH SENECA.PNG
Click a neighboring county
for more resources

Migration[edit | edit source]

Military Records[edit | edit source]

Civil War
Servicemen from Seneca County served in various regiments. Men often joined a company (within a regiment) that originated in their county. Listed below are companies that were specifically formed in Seneca County.

8th Regiment, Ohio Infantry, Company A
123rd Regiment, Ohio Infantry, Companies D, I, and K

World War I

Naturalization and Citizenship[edit | edit source]

Online Naturalization Indexes and Records

Newspapers[edit | edit source]

Seneca County newspapers often contain genealogical value including obituaries, births, marriages, deaths, anniversaries, family gatherings, family travel, achievements, business notices, engagement information, and probate court proceedings.

Obituaries[edit | edit source]

Other Records[edit | edit source]

Periodicals[edit | edit source]

Probate Records[edit | edit source]

From 1797 or the creation of the county, probate records were held by the Court of Common Pleas. After 1852, records are held by the Seneca County Probate Court. Records include wills, estates, guardianships, naturalizations, marriage, adoption, and birth and death records (1867-1908 only). The records may give the decedent's date of death, name of spouse, children, parents, siblings, in-laws, neighbors, associates, relatives, and their place of residence.

See Ohio Probate Records for information about how to use probate records.

Online Probate Indexes and Records

School Records[edit | edit source]

Social Security Records[edit | edit source]

Tax Records[edit | edit source]

Ohio tax records complement land records and can be used in place of censuses before 1820 or to supplement the years between censuses. Because only persons who owned taxable property were listed, many residents were not included in tax lists. There may also be gaps of several years in the tax records of some counties.

Online Tax Indexes and Records

Vital Records[edit | edit source]

Vital records consist of birth, death, marriage and divorce records. Marriages were usually recorded from the formation of the county and are held at the office of the County Probate Court. Divorce records are located with the county Clerk of Courts.

Any existing birth and death records from 1867 through December 19, 1908 are located at the County Probate Court. The Ohio Department of Health has birth records filed after December 20, 1908 and death records filed after January 1, 1954, while the Ohio History Connection houses death records from December 20, 1908 through December 31, 1953.

Birth[edit | edit source]

Marriage[edit | edit source]

Death[edit | edit source]

Divorce[edit | edit source]

Research Facilities[edit | edit source]

Archives[edit | edit source]

Listed below are archives in Seneca County. For state-wide archival repositories, see Ohio Archives and Libraries.

Family History Centers[edit | edit source]

Family History Center and Affiliate Library Locator map - search for local Family History Centers or Affiliate Libraries

  • Family History Centers provide one-on-one assistance, free access to center-only databases, and to premium genealogical websites.
  • FamilySearch Affiliate Libraries have access to most center-only databases, but may not always have full services normally provided by a family history center.

Local Centers and Affiliate Libraries

Libraries[edit | edit source]

Listed below are libraries in Seneca County. For state-wide library facilities, see Ohio Archives and Libraries.

Bettsville Public Library
233 State St
PO Box 385
Bettsville, OH 44815-9999

Bliss Memorial Public Library
20 S Marion St
PO Box 39
Bloomville, OH 44818-0039

Kaubisch Memorial Public Library
205 Perry St
Fostoria, OH 44830-2265

Seneca East Public Library
14 N Main St
PO Box 572
Attica, OH 44807

Tiffin-Seneca Public Library
77 Jefferson St
Tiffin, OH 44883

Museums[edit | edit source]

Seneca Historical Society and Museum
28 Clay St
Tiffin, OH 44883-0433

American Civil War Museum of Ohio
217 S Washington
Tiffin, OH 44883

Fostoria Area Museum
PO Box 142
Fostoria, OH 44830

Societies[edit | edit source]

Listed below are societies in Seneca County. For state-wide genealogical societies, see Ohio Societies.

Seneca County Chapter Ohio Genealogical Society
PO Box 157
Tiffin, OH 44883-0841

Websites[edit | edit source]

Research Guides[edit | edit source]

References[edit | edit source]

  1. Ohio Atlas of Historical County Boundaries Ohio: Individual County Chronologies; Copyright The Newberry Library 2007
  2. Ohio Atlas of Historical County Boundaries Ohio: Individual County Chronologies; Copyright The Newberry Library 2007
  3. Genealogy Trails History Group, “Seneca County, Ohio Genealogy and History”, accessed 2/27/2017.
  4. Handybook for Genealogists: United States of America, 10th ed. (Draper, Utah: Everton Pub., 2002), Ohio.At various libraries (WorldCat); FHL Book 973 D27e 2002.
  5. Handybook for Genealogists: United States of America, 10th ed. (Draper, Utah: Everton Pub., 2002), Ohio.At various libraries (WorldCat); FHL Book 973 D27e 2002.
  6. Ohio Atlas of Historical County Boundaries Ohio: Individual County Chronologies; Copyright The Newberry Library 2007
  7. Ohio Atlas of Historical County Boundaries Ohio: Individual County Chronologies; Copyright The Newberry Library 2007
  8. Wikipedia contributors, "Seneca County, Ohio," in Wikipedia: the Free Encyclopedia,,_Ohio, accessed 14 January 2019.