Mercer County, Missouri Genealogy

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United States Gotoarrow.png Missouri Gotoarrow.png Mercer County

Guide to Mercer County Missouri genealogy. Birth records, marriage records, death records, census records, family history, and military records.

Hand and keyboard.jpg Missouri
Online Records

Mercer County, Missouri
Map of the U.S. highlighting Missouri
Location of Missouri in the U.S.
Founded February 14, 1845
County Seat Princeton
Address Mercer County Courthouse
802 E Main Street
Princeton, MO 64673
Phone: 660.748.34215
Mercer County Website

County Courthouse

County Clerk has birth records 1883-1894 and death records
1883-1891; Clerk Circuit Court has marriage, divorce, court
 land records; Circuit Court, division 2, has probate records[1]


Parent County

1845--Mercer County was created 14 February 1845 from Grundy County. County seat: Princeton [2]

Boundary Changes

  • See an interactive map of Mercer County border changes at N2Genealogy.

Record Loss


Populated Places

Neighboring Counties






  • 1870-1876 - Lineville Catholic Church Baptism Index 1870-1876. Batch C511701 at FamilySearch - free.[3]


  • 1871-1876 - Princeton Catholic Church Baptism Index 1871-1876. Batch C511521 at FamilySearch - free.[3]
  • 1870-1883 - Princeton Catholic Church Marriage Index 1870-1883. Batch M511521 at FamilySearch - free.[3]


  • 1870 - Sommersett Catholic Church Baptism Index 1870. Batch C511711 at Familysearch - free.[3]



Land and property records can place an ancestor in a particular location, provide economic information, and reveal family relationships. Land records include: deeds, abstracts and indexes, mortgages, leases, grants and land patents.

See Missouri Land and Property for information about records of land transfers from the government to private ownership. After that transfer, transactions were usually recorded and are currently housed at the county courthouse.

Local Histories

Local histories are available for Mercer County, Missouri Genealogy. County histories may include biographies, church, school and government history, and military information. For more information about local histories, see the Wiki page section Missouri Local Histories.





Probate records include wills, bonds, petitions, accounts, inventories, administrations, orders, decrees, and distributions. For further information, see United States Probate Records.

In Missouri, probate records have usually been recorded by the clerks of the probate courts, but in some counties the common pleas or circuit courts handled this function. They are frequently indexed.


Taxes were levied on free white males over 21 and slaves aged 21 to 60. These persons are referred to as "polls." Tax listings, or digests, of a county generally list the taxable landowners and other polls and the amount of tax. The records for each county are divided by militia district. For more information see the wiki page Missouri Taxation.

Vital Records

Vital Records consist of births, adoptions, marriages, divorces, and deaths. For additional guidance on researching and using vital records, see United States Vital Records or How to order Missouri Vital Records.

St. Louis and Kansas City recorded births and deaths starting as early as 1850 for deaths and 1870 for births.  The Missouri Department of Health began keeping birth and death records in 1909. County records vary by year and the county. A copy or an extract of most original records can be purchased from the Missouri Vital Records State Department of Health, the County Clerk's office or order electronically online.

  • 1883-1894 - Mercer County Birth Index 1883-1894. Batches C515455 and C515456 at FamilySearch - free.[3]
  • 1844-1885 - Mercer County Marriage Book A Index 1844-1885. Batch M515421 at FamilySearch - free.[3]
  • Missouri State Archives provides on-line access to Missouri Death Certificates more than 50 yrs old starting in 1910.
  • 1883-1894 - Mercer County Death Index 1883-1894. Batch B515455 at FamilySearch - free.[3]

Societies and Libraries

Family History Centers

Web Sites

  • USGenWeb project. May have maps, name indexes, history or other information for this county. Select the state, then the county.
  • Family History Library Catalog


  1. Handybook for Genealogists: United States of America, 10th ed. (Draper, Utah: Everton Pub., 2002), Mercer County, Missouri. Page 403 At various libraries (WorldCat); FHL Book 973 D27e 2002.
  2. The Handybook for Genealogists: United States of America,10th ed. (Draper, UT:Everton Publishers, 2002).
  3. 3.0 3.1 3.2 3.3 3.4 3.5 3.6 Genealogical Society of Utah, Parish and Vital Records List (July 1998). Microfiche. Digital version at