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Platte County, Missouri
Genealogy, History & Facts

Platte County, Missouri Facts

Platte County

When was Platte County, MO Created?
Platte County was created on December 31, 1838 from part of the Platte Purchase. The county was named for the Platte River, a tributary of the Missouri River, which is in turn named for the French word "platte" meaning flat or shallow.

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

What counties are adjacent to Platte County, MO?
Bordering Counties are Buchanan County, Clinton County, Clay County, Jackson County, Wyandotte County, Kansas, Leavenworth County, Kansas, Atchison County, Kansas.

What cities and towns are in Platte County, MO?
Cities and towns located in the County include Camden Point, Dearborn, East Leavenworth, Edgerton, Farley, Ferrelview, Houston Lake, Iatan, Kansas City, Lake Waukomis, Northmoor, Parkville, Platte City, Platte Woods, Ridgely, Riverside, Tracy, Waldron, Weatherby Lake, Weston.

Platte County, MO Vital Records

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

Platte County, MO Census Records

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

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

Platte County, MO Courthouse and Government Records

Platte County Courthouse

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

  • Platte County Courthouse (all departments listed below are located here, unless otherwise noted)
    • Address: 328 Main St., Platte City, MO 64079
  • Platte 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.
    • Address: Platte County Administration Building, 415 Third St., Suite 70, Platte City, MO 64079
    • Phone: (816) 858-3326
    • Marriage Records: 1839 (including Index to marriage records, 1838-1894; Marriage records, 1839-1917; Application for marriage licenses, 1913-1919) 
    • Land Records: 1839 (including Index to deeds, 1839-1890; Deed records, 1839-1895) 
  • Platte 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: (816) 858-2232
    • Probate Records: 1839  (including Index to probate records, 1839-1 936; Probate records) 1839-1887; Administrator’s/executor’s letters, bonds and records, 1849-1894; Inventories, appraisements and sale bills, 1852-1891; Settlement records, 1872-1902; Probate packets, 1894; Will records, 1840-1933) 
    • Court & Divorce Records: 1839 (including Circuit court records, 1839-1887; Index to naturalization records, 1846-1886; Naturalization records, 1846-1886 and 1905-1924; Declarations of naturalizations, 1907-1926) 
  • Platte 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.”
    • Address: Platte County Administration Building, 415 Third St., Platte City, MO 64079
    • Phone: (816) 858-3340 
    • Birth & Death Records: 1883–87
  • Platte 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

Platte County, MO Societies and Family History Resources

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

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

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

Platte Co. MO Maps, Atlases & Gazetteers

Platte Co. MO Books, Newspapers & Publications

Platte Co. GA Cemeteries & Church Records

Platte Co. MO Family Websites, Pictures & Histories

Platte Co. MO General and History Websites

Platte Co. MO Military Records

Platte Co. MO Schools & Directories

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