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Jefferson County, Missouri
Genealogy, History & Facts

Jefferson County, Missouri Facts

Jefferson County

When was Jefferson County, MO Created?
Jefferson County was created on December 8, 1818 (effective January 1, 1819) from St. Louis County and Ste. Genevieve County. The county was named in honor of Thomas Jefferson (1743-1826), third President of the United States, principal author of the Declaration of Independence, and one of the most influential Founding Fathers.

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

What counties are adjacent to Jefferson County, MO?
Bordering Counties are St. Louis County (north), Monroe County, Illinois (east), St. Genevieve County (southeast), St. Francois County (south), Washington County (southwest), Franklin County (west).

What cities and towns are in Jefferson County, MO?
Cities and towns located in the County include Arnold, Barnhart, Byrnes Mill, Cedar Hill, Cedar Hill Lakes, Crystal City, Danby, Dittmer, De Soto, Festus, Fletcher, Grubville, Herculaneum, Hematite, High Ridge, Hillsboro, Horine, House Springs, Imperial, Kimmswick, Liguori, Mapaville, Morse Mill, Murphy, Olympian Village, Otto, Parkdale, Pevely, Scotsdale, Sulphur Springs, Valles Mines.

Jefferson County, MO Vital Records

Where can find Jefferson County Birth, marriage, Divorce and Death Records?
Jefferson 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 Jefferson 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 Jefferson County Health Department has Birth Certificates since 1920 and Death Certificates since 1980.

Jefferson County, MO Census Records

What Jefferson County, MO census records are available?
There are many types of census records for Jefferson County guide you in researching your family tree. Federal Population Schedules are available for 1820 (missing), 1830, 1840, 1850, 1860, 1870, 1880 (free index), 1890 (fragment), 1900, 1910, 1920, 1930, 1940.

Jefferson Co. Slave Schedules is available for 1850 & 1860. Jefferson Co. Mortality Schedules can be found for 1850, 1860, 1870 and 1880. Jefferson Co. Industry and Agriculture can be found for 1850, 1860, 1870 and 1880. Jefferson 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

Jefferson County, MO Courthouse and Government Records

Jefferson County Courthouse

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

  • Jefferson County Courthouse (all departments listed below are located here, unless otherwise noted)
    • Address: 729 Maple Street, Hillsboro MO 63050
  • Jefferson 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: (636) 797-5414
    • Marriage Records: 1825 (including Index to marriage records, 1825-1849; Marriage records, 1826-1915; Register of marriage license, 1881 -1885. Marriage commissions,1826-1838; Negro/colored marriages, 1849-1871) 
    • Land Records: 1819 (including Index to deeds, 1819-1904; Deed records, 1819-1908; Index to warranty deeds, 1881-1885; Index to chattel mortgages, 1866-1904; Index to deeds of trust, 1866-1904; Deeds of trust, 1867-1887)
  • Jefferson 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: 636-797-5443
    • Probate Records: 1820  (including Probate records, 1822-1 885; Administrator’s/executor’s letters, bonds and records, 1858-1910; Guardian’s/curator’s records, 1873-1895; Will records, 1872-1921)
    • Court & Divorce Records: 1819 (including Index to circuit court records, 1831-1886; Circuit court records, 1819-1895)
  • Jefferson 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: 636-797-5555
    • Birth & Death Records: 1883-92 (including Chancery records, 1826-1851; Permanent record of births, 1890-1892; Register of births and stillbirths, 1883-1892; Permanent record of deaths, 1883-1892)
  • Jefferson 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

Jefferson County, MO Societies and Family History Resources

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

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

What other genealogical resources are available in Jefferson County, MO?
The following are web links to Genealogy, Records and Resources pertaining to Jefferson 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.

Jefferson Co. MO Maps, Atlases & Gazetteers

Jefferson Co. MO Books, Newspapers & Publications

Jefferson Co. GA Cemeteries & Church Records

Jefferson Co. MO Family Websites, Pictures & Histories

Jefferson Co. MO General and History Websites

Jefferson Co. MO Military Records

Jefferson Co. MO Schools & Directories

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