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Osage County, Missouri
Genealogy, History & Facts

Osage County, Missouri Facts

Osage County

When was Osage County, MO Created?
Osage County was created on January 29, 1841 from Gasconade County. The county was named for the Osage River, a 360 miles (580 km) long tributary of the Missouri River in central Missouri; the name of the river is probably derived from a French corruption of "Washazhe" – the name of the Osage Native Americans .

What is the County Seat of Osage County, MO?
The County Seat is located in Linn and in addition the county government website is

What counties are adjacent to Osage County, MO?
Bordering Counties are Callaway County, Gasconade County, Maries County, Miller County, Cole County.

What cities and towns are in Osage County, MO?
Cities and towns located in the County include Argyle, Belle, Bonnots Mill, Chamois, Folk, Frankenstein, Freeburg, Koeltztown, Linn, Loose Creek, Meta, Rich Fountain, Westphalia.

Osage County, MO Vital Records

Where can find Osage County Birth, marriage, Divorce and Death Records?
Osage County vital records can be found at the Missouri Office of Vital Records has copies of birth and death records reported from January 1, 1910. There is a fee for each copy requested. Please refer to the information to the Statewide Vital Records in Missouri for current fees and application process.

You can search online for Osage County Birth, Marriage, Divorce or Death Records. You can also Order Electronically Online or can download an application for Missouri Birth and Death CertificateMarriage and Divorce Certificate Application to mail.

Another resource is the Osage County Health Department has Birth Certificates since 1920 and Death Certificates since 1980.

Osage County, MO Census Records

What Osage County, MO census records are available?
There are many types of census records for Osage County guide you in researching your family tree. Federal Population Schedules are available for 1850, 1860, 1870, 1880 (free index), 1890 (fragment), 1900, 1910, 1920, 1930, 1940.

Osage Co. Slave Schedules is available for 1850 & 1860. Osage Co. Mortality Schedules can be found for 1850, 1860, 1870 and 1880. Osage Co. Industry and Agriculture can be found for 1850, 1860, 1870 and 1880. Osage Co. Union Veterans Schedules can be acquired for 1890. There are free down-loadable and printable census forms to help you with your research. See Also Missouri Census Records Research Guide

Osage County, MO Courthouse and Government Records

Osage County Courthouse

What genealogical records can I find in the Osage County Courthouse?
The below facts shows exactly what death, marriage, birth, property, wills, and court records are typically in Osage County. The years listed below are the first noted records with this county. See Also Missouri Corthouse Records Research Guide.

  • Osage County Courthouse (all departments listed below are located here, unless otherwise noted)
    • Address: 205 E. MAIN STREET, LINN, MO 65051
  • Osage County Recorder of Deeds is the place where all transactions having to do with land are recorded and kept on file. They take marriage license applications, issues marriage licenses, files the license after the marriage, and maintains a permanent record of the marriage, surveys and plats of subdivisions, Armed Forces discharge papers for all veterans who reside in the county. Some naturalization records have been found with the deeds.
    • Phone: 573-897-3095
    • Marriage Records: 1841 (including Marriage records, 1841-1920) 
    • Land Records: 1841 (including Index to deeds, 1841-1886; Deed records, 1841-1889) 
  • Osage County Circuit Court Clerk / Probate Court Clerk has the direct index to records such as divorces, adoptions, judgment, and tax fee books including direct and indirect indexes. They also retain the index to criminal records and criminal files of the circuit court. Adoptions are under the jurisdiction of the circuit court. Naturalization records, including petitions, declarations of intention, certificates, and certificates of allegiance, and granting of citizenship are also located in the clerk's office, as well as an index to civil case files. The County Probate Division has jurisdiction over the estates of deceased persons. The Division hears all litigation involving trusts, including those trusts established in wills. (In the smaller counties, probate matters are handled in the same office as the associate circuit court office)
    • Phone: 573-897-3114
    • Probate Records: 1841  (including Index to probate records, 1841 -1895; Probate records, 1841-1892; Administrator’s/executor’s letters, bonds and records, 1841-1923; Inventories, appraisements and sale bills, 1870-1898; Guardian’s/curator’s records, 1887-1894; Will records, 1841-1916) 
    • Court & Divorce Records: 1841 (including Index to circuit court records, 1841-1905; Circuit court records, 1841-1890) 
  • Osage County Clerk of the Court has indexes to common pleas, records of all extant proceedings, chancery minute books, records of births and deaths, county court records, right-of-way and road records, as well as surveyor's records (including field notes and plats made by the county surveyor). This office usually holds the county treasurer's notes, bonds and commissions, records of marks and brands, wolf scalps, stray notices, real estate assessments, and tax books. In some counties, early terms for this court included “Chancery” or the “Court of Common Pleas.”
    • Phone: (573) 897-2139 Ext. 110
    • Birth & Death Records: 1883-98 (including Permanent record of births, 1883-1895; Register of births and stillbirths, 1883-1898; Permanent record of deaths, 1883-1893; Register of deaths, 1883-1894; County court records, 1841-1856; State census, 1876; Tax books, 1844, 1856-1862 and 1865; Land owner’s list, 1844) 
  • Osage County Tax Assessor Office is responsible for appraising and assessing real estate property and person property for the purpose of taxation as well as transferring ownership of real estate, and keeping real estate maps up to date.
  • Local Records Inventory Database
  • State-Issued Land Patents 1831 - 1969
  • BLM Land Records

Osage County, MO Societies and Family History Resources

What genealogical and historical societies, archives, museums, associations and libraries are available for Osage County, MO?
A list of Osage County Historical  and Genealogical Societies, Libraries, Archives. See also list of Statewide Missouri Archives, Historical & Genealogical Societies.

Where can I connect with other Osage County, MO Researchers through message boards and forums?

What other genealogical resources are available in Osage County, MO?
The following are web links to Genealogy, Records and Resources pertaining to Osage County. A majority of these genealogy links fall into 3 categories: Business Sites, Private Sites or Organization Sites. Some have free access some have to have a payment. This is just a directory which has been gathered or submitted. I do not endorse or promote one genealogy site above another.

Osage Co. MO Maps, Atlases & Gazetteers

Osage Co. MO Books, Newspapers & Publications

Osage Co. GA Cemeteries & Church Records

Osage Co. MO Family Websites, Pictures & Histories

Osage Co. MO General and History Websites

Osage Co. MO Military Records

Osage Co. MO Schools & Directories

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