Miami County, Ohio Genealogy

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Cemetery records often reveal birth, marriage, death, relationship, military, and religious information.  
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Revision as of 15:22, 20 April 2013

Guide to Miami County Ohio genealogy. Birth records, marriage records, death records, census records, family history, and military records.

Hand and keyboard.jpg Ohio
Online Records

Miami County, Ohio
Boundary map of Miami County, Ohio
Map of the U.S. highlighting Ohio
Location of Ohio in the U.S.
Miami County Ohio Courthouse.jpg
Address Miami County Courthouse
215 W. Main St.
Troy, Ohio 45373-3263
Miami County Website
United StatesGotoarrow.png Ohio Gotoarrow.png Miami County 


Historical Facts

Beginning dates for major county records

*For earlier dates, try... Church | Obituaries | Cemeteries
  • Parent Counties: Formed from Montgomery County 16 January 1807.[1]
  • County Seat: Troy
  • Neighboring Counties: Miami County, Ohio Genealogy residents may also have records in [2]Shelby (north) · Montgomery (south) · Darke (west) · Champaign and Clark (east)

Boundary Changes

See an interactive map of Miami County boundary changes.

Record Loss


Bible Records


Biographical Sketches and Stories of Miami County Ohio - People, places, and things.  Indexed by surname


Miami County Cemetery and Gravestone Inscriptions.  A list of burial places in Miami County for which inscriptions have been copied.


Cemetery records often reveal birth, marriage, death, relationship, military, and religious information.

Online Grave Transcripts Published Grave Transcripts County Cemetery Directories

Family History Library


Names in Stone


Billion Graves

Billion Graves


Ohio Gravestones

Names in Stone

See Ohio Cemeteries for more information.


Church Records

Court Records

An Index to Court Records from the Miami County Courthouse and other locations containing Probate Court Index, Deeds Index, Marriage Index, Children's Home records, Pauper's Records, etc.

Emigration and Immigration

Ethnic, Political, or Religious Groups



Miami Valley Genealogy Index is an Index to more than a half million pointers to records all over Miami Valley not just Miami County, Ohio.


Local Histories

Histories of Miami County for 1846, 1880, 1909, 1920 and Randolph Slaves.

The History of Miami County, Ohio, published 1880, W. H. Beers & Co. is available at FamilySearch.

Land and Property

Township Maps of the 12 townships along with census indexes and historical descriptions.



Civil War, 1861-1865

Civil War service men from Miami County served in various regiments. Men often joined a company (within a regiment) that originated in their county. Listed below are companies that were specifically formed in Miami County.

- 1st Regiment, Ohio Cavalry, Company I

Naturalization and Citizenship


Marriage and Birth notices from Newspapers




Probate records created after 1852 are held by the Miami County, Ohio Genealogy Probate Court. From 1797 or the creation of the county, probate records were held by the Court of Common Pleas. Most counties transferred all records to the Probate Court, but in some circumstances, Court of Common Pleas records should be searched for records prior to 1852. Most records are housed at the Miami County, Ohio Genealogy Courthouse. Some records are on microfilm at the Ohio Genealogical Society and the Family History Library. For more complete information about the location of county probate records see:

See the wiki page Ohio Probate Records for information about how to use probate records.

Content: Probate Records may give the decedent's date of death, names of his or her spouse, children, parents, siblings, in-laws, neighbors, associates, relatives, and their place of residence.

Record types: Wills, estates, guardianships, naturalizations, marriage, adoption, and birth and death records (1867-1908 only).

Public Records


Miami County Courthouse
201 West Main Street
Troy, OH 45373-3263
Phone: 937-332-6855

Clerk Court has divorce and court records from 1807;
Probate Judge has marriage, death and probate;
County Health Department has birth records;
County Recorder has land records[1]

Family History Centers

The following public libraries in Miami County have collections of particular interest to genealogists.

Local History Library
Troy-Miami County Public Library
419 W. Main St.
Troy, Ohio 45373
Telephone: (937) 339-0502
The collections include books, maps, microfilm, newspapers, and several original local records with internet access to sites with additional records.


Piqua, Ohio High School 1919 Basketball Team


Early Tax and Census records 1810-1840 period.

Vital Records

Ohio Deaths, 1908-1953 Free name indexes and images at FamilySearch. Records include such information as birth date of deceased, city, county, and state of death, name of spouse if married, names of parents, maiden name of mother, name of informant, if deceased was single, married, windowed or divorced, occupation of deceased.

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
  • Miami County, Ohio site has many links to court records, newspapers, histories of the county, etc.


Populated Places


  1. 1.0 1.1 Handybook for Genealogists: United States of America, 10th ed. (Draper, Utah: Everton Pub., 2002), [FHL book 973 D27e 2002].
  2. Wikipedia contributors, "Miami County, Ohio" in Wikipedia: the Free Encyclopedia at,_Ohio (accessed 10 May 2012).
  3. Carol Willsey Bell, Ohio Wills and Estates to 1850: An Index (Columbus, Ohio: the author, 1981). FamilySearch Books Online - Free online copy.