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Seneca County Ohio




Seneca County, Ohio

A Part of OHGenWeb, USGenWeb Project

Welcome to Seneca County, Ohio

My name is Alice Allen, and I will be your guide through Seneca County. While I am not in Seneca County, I hope that I can help you locate your ancestors who were once here.

Located in the northwestern part of Ohio, Seneca County was formed in 1820 from Huron County. It's county seat is Tiffin, and it is home to Heidelberg College. It is our plan to make this into a location where you can find information and resources for your genealogical research. We hope you enjoy your visit and will find something you can use. Be sure to visit us often, as we will be updating and adding to our resources. If you have any non-copyrighted records (wills, obituaries, etc.) that you would like to contribute, please contact me by clicking here

Please note, I do not live in Ohio and do not have access to many records from Ohio. Check out the Seneca County links (including the Seneca Co. Archives) listed below. Still can't find what you need? The mailing address for the Seneca Co. chapter of the OGS is listed at the bottom, along with the courthouse's mailing address. And you can join the OHSENECA-L mailing list (instructions are also below) and possibly receive help that way. Several members of this list own Seneca County publications or live in Seneca County and may be able to help you. And don't forget to check the "Lookups" page.

About the GenWeb Project

The USGenWeb Project as we know it today, began in June of 1996 to provide free genealogical data, a place to leave queries and contact researchers with similar interests. If you'd like to read the full history of the USGenWeb Project, you can find that at the following link:

Ohio Links

Main Page, Ohio GenWeb

Ohio Historical Society Archives Page

Ohio County Maps

Ohio Genealogical Society

Ohio Family Reunions

Ohio GenWeb Site for Civil War

Ohio Census Maps 1810-1910

Ohio Family Group Sheet Project

Census Online - Ohio

City Directories of the United States Project (Ohio)

USGenWeb Archives for Ohio

Cyndi's list of Geneology sites, including Ohio

Ohio Migration Trails
by Maggie Stewart Zimmerman

Ohio Biographies Project


Seneca County Queries and Lookups

Effective May 29th, 2009, manual entry of queries is being discontinued. Please use one of the Message Boards listed below to leave a query. The Rootsweb board is gatewayed to the Mailing List for Seneca County, so your query will be viewed by more people. To see queries left from 1996 through May 2009, click on the "Query Index" link in the table below.

Rootsweb's Message Board For Seneca County Genforum's Query Site Query Index - 1996 Through May 2009
Queries with "bad" email addresses (1996-May 2009) Lookups


Seneca County Links


Marriage Records



The Poorhouse Story



Diaries and Letters


Family Page Links

Seneca Co. Genealogical Society

Seneca County History

Seneca County 75 th Anniversary Book

A Centennial (1902) Biographical History of Seneca County

Fostoria History Page

Kris Krumm's Seneca Co. Maps

Tiffin-Seneca Public Library

Advertiser-Tribune Obituaries Archives

Seneca County Churches

Rootsweb's Seneca Co. Page

Seneca County chapter of Henry Howe's "Historical Collections of Ohio"

Rootsweb's Social Security Death Index for Seneca County

Tiffin-Seneca History

Seneca County Families


Miscellaneous Links

Bureau of Land Management Records

US Geological Survey's Geographic Name Server

Deciphering Old Handwriting

Early Migration page

The Genealogist's Index to the World Wide Web


Join the Seneca County Mailing List

Click here [email protected]. This will take you to a blank email form, except it has been addressed for you. Put nothing in the subject line, and in the body of the message write "subscribe" (without the " "). Type "Subscribe" into the body of your message, too. Hit your "send" button and you will be subscribed very shortly.

If you would prefer to receive it in the Digest mode (several messages in one mailing rather than one at a time), follow the above directions, except address your email to
[email protected]



Seneca County Vital Records

Birth and Death Records: 1867-1908
Marriage Index to Records: 1841 to present
All Estate Indexes to files: 1840's to present
Estate Files: #19553 to present
Administration Dockets: #25 thru 33
Guardianship Dockets: #7 thru 9
Civil Dockets: #14 thru 17

Seneca County Cemeteries with names of deceased listed

Write to:

108 Jefferson Street
Tiffin, OH 44883
Phone 419-447-3121


Birth & Death Records after 1908, write to:

71 S Washington Street Suite B
Tiffin, OH 44883
Phone 419-447-3691

Seneca County Chapter Ohio Genealogical Society
P. O. Box 157
Tiffin, OH 44883-0841
Seneca Co. Genealogical Society


If you have data you'd like to donate to the site, or any questions, contact me by clicking here

I do not live in Ohio, so am unable to do personal research for you. I suggest that you try one or more of the following resources in obtaining help for your family:

1. Check the Lookups page, perhaps someone has access to the records you need.

2. Join the OHSENECA-L mailing list. Several members of the list are either residents of Seneca County, or have records they can check for you.

3. Leave a query on the Query page (above) or the Message Boards for Seneca County.

These pages last updated June 2, 2013

Copyright 1996-2013 by Alice Allen