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 Sullivan Co. MO Genealogy

Site Update Underway
During site update:
Links appearing like this are NOT updated yet. Links appearing like this, the page still on old site. Links having ?
The linked page is being evaluated to see if it is still applicable. In other words, it not be updated or added.
...more about the update further down on the page...

I am Lynda Coffman Peach, Coordinator for the Sullivan County, Missouri genealogy website. I have strong ties to the county via my maternal line. A MoGenWeb (Missouri Genealogy) website helped me when I first began my family research. I hope you will have a similar experience.

Please bear with me during the website update.

AI created image of 1st exploration on Missouri RiverEarly History

Sullivan County is located in north-central Missouri. It is 15 miles south of Iowa and 65 miles west of the Mississippi River. The county seat is Milan.

The county's present boundaries were formed in 1843 when it was formed as Highland County which was attached to Linn County for all civil and and military purposes.

Sullivan County highlighted on small Missouri county map.A state census in 1844 showed that the county had enough people to become a full organization and was established February 14, 1845. Named after James Sullivan, a member of the Continental Congress of 1782, the county was divided into six townships: Duncan, Liberty, Morris, Pleasant Hill, Polk and Vrooman. County organization was complete when voting precincts were established in each township. [1]

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Just an old building.Some Interesting Bits

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A new template and design began implmentation on May 12th 2026.
    Multiple people have been Coordinators of this site and each had their design. And there are hundreds of pages to update. You *WILL* encounter various pages that look nothing like this page or even the red-white-blue. Over time these will be converted. Be aware on those old pages you may find a broken link: an image that doesn't appear or a link that no longer works.
    If you have a page you would like bumped near the top of the conversion stack, please email me using the link below in the "Contact Us" block. If I can, I will try to accomplish.

For the techies: I loved the previous red-white-blue design and had the code to current HTML & CSS standards. However, not everything worked in the update. A page was taking hours to convert. Ergo, out with the beloved design.
    Server-side includes (SSI) is implemented in this new design.
Why? Just an example: Coordinators (see "Contact Us" below) change. This block appears on most new pages. In May, a new State Coordinator was elected. Imagine having to update that on EVERY page? What if the coordinator doesn't change, but their email does? Or a new link is added to the top nav? To the "Quick Links"? SSIs eliminate those literally hundreds of updates. I edit 3 "includes" and all pages have the new data. A simple, succinct explanation is found on Wikipedia.

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Sunday After Church

Look at the background! It must have been a cold day for a baptism. Everyone has on coats and the preacher is in the river with the couple.


Surrounding Counties

Mercer Putnam
Grundy
Sullivan Co.
Linn
Adair


Hope You Chuckle...

Page Last Updated:

hand15 Jun 2026 9:16pm CDT
Updated to new design. New links.


 

William Sevier Sr.

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The tombstone of the father of William Sevier, one of the first settlers of Sullivan County. It reads "Sacred To the memory of William Sevier who departed this life Jan 1, 1825 in the 64th year of his age."

Jeremiah Gore Smith

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Jeremiah Gore Smith Sr., born in Boston, was an early emigrant. He married Mary Sevier, granddaughter of the gentleman on the left. They are the County Coordinator's great-great-grandparents.

Peter & Hester Miller

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Peter was born in Paris or Bavaria. Hester BASCOM's ancestors first came to the Colonies in 1734. The surname is also seen as BASCUM.

John B. & Arena Sinclair

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John B. Sinclair & Arena BAKER were married in Ohio in 1846. By the 1860 census, they were farming in Sullivan County.

All of the above are ancestors of the County Coordinator. If you would like your Sullivan County ancestor featured, email a photo to me with as much data as you have. All of the above images were modified for clarity.

Site Sources

Book shelfSite sources are shown below and are linked to from within the site. When possible, a link will be provided to an Internet site for the source. But some sources may be hard copy.

1. A history of Northeast Missouri, Volume 1, 1913, edited by Walter Williams, pages 649-650. Full view obtainable via Google books. Downloadable PDF file of the book is also available.

2. National Registry of Historic Places, Building - #85002483. This link goes to the page for all of Sullivan County.


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Using This Content

Important: Please give Credit when it is Due.
    Note: USGenWeb & MOGenWeb Logos are Copyright Protected. The material on Sullivan County, Missouri webpages is available for the free use of individuals in furtherance of researching their personal genealogy. Any commercial use of this content where money is asked for, for any reason, is strictly prohibited.