Hamilton County, Ohio Genealogy

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Quick Dates

Births and deaths were recorded at the local, county and state level in various time periods.  Some births and deaths were recorded in multiple locations and the information in those records varies.  Hamilton County's civil records start in the following years:[1][2]

Locality Birth Marriage Death Census Land Probate
Ohio (State Recording)
1908 -- -- --
Hamilton County 1875 1817 1891 1820 1794 1791
Anderson Twp 1898 1907
Cincinnati 1874
1865 -- -- --
Norwood 1908
1908 -- -- --
St. Bernard 1889
1889 -- -- --

Governmental Repositories

County Courthouses

Hamilton County Clerk of Courts

Hamilton County Courthouse
1000 Main St.
Cincinnati, Ohio 45202(513) 946-5656

Directions and Parking

Online index to Divorces (1994-present), Civil and Criminal Cases (1989-present), Common Pleas (1997-present).

Court of Common Pleas

(513) 946-5800


Municipal Court

(513) 946-5700


Probate Court

William Howard Taft Center
230 E. Ninth St.
Cincinnati, Ohio 45202

Hours and Location

Many records are now available online.  Archival Records: Estates 1791 - 1984; Wills 1791 - 1973; Trusts1791 - 1984; Guardianships 1791 - 1984: Marriages 1808 - 1983; Minister's License 1963 - 1975; Birth Records 1863 - 1908; Birth Registrations and Corrections 1941 - 1994; Death Records 1881 - 1908; Naturalizations 1856 - 1906; Probate Court Journal Entries 1791 - 1837; Physician Certificates 1919 - 1987.  Records are incomplete due to courthouse fires. 

First District Court of Appeals

William Howard Taft Center
230 E. Ninth St.
Cincinnati, Ohio 45202

(513) 946-3500


Federal Courts in Hamilton County

U.S. District Court, Southern District of Ohio
Office of the Clerk
Potter Stewart U.S. Courthouse, Room 103
100 East Fifth Street
Cincinnati, Ohio  45202

Directions and Hours 

District Court for Adams, Brown, Butler, Clermont, Clinton, Highland, Lawrence, Scioto and Warren counties in Ohio.

U.S. Court of Appeals for the Sixth Circuit
Potter Stewart U.S. Courthouse
100 East Fifth St.
Cincinnati, Ohio 45202

U.S. Courts Library

(513) 564-7321[1]



Hamilton County Recorder and Hamilton County Auditor

Hamilton County Administration Building
138 E. Court St.
Cincinnati, Ohio 45202-1236

Recorder's Office

(513) 946-4573

Land records 1794-present, maps, Veteran's Grave Registrations.  "Easy Reference List of Documents Recorded in the Recorder's Office" gives a complete list available records.

Auditor's Office

(513) 946-4000

Plats 1939-present.  Property search is availabe on their website by name or address. 

Hamilton County Health Department

Hamilton County Public Health Department
250 William Howard Taft, 2nd Floor
Cincinnati, Ohio 45219
(513) 946-7800
Directions, Genealogical Research

Hamilton County births 1875-present, deaths 1891-present, Reading Health Department records.


Parent Jurisdictions

Hamilton County was created 2 Jan 1790 as an original county in the Northwest Territory.[3]  In 1803, Ohio became a state with Hamilton County as one of the original counties.

County seat: Cincinnati [4]

Record Loss

Boundary Changes

See an interactive map of Hamilton County boundary changes.


Populated Places

A Gazetteer of Hamilton Co., Ohio 1784-1986 can be found in Guide to Genealogical Resources in Cincinnati & Hamilton Co., Ohio, 6th Edition.[6]  [Hereafter referred to as The Guide.]

Board on Geographic Names (BGN) can be searched for the names of populated places in Hamilton County.  Search for Hamilton County, Ohio with 'Populated Places' selected as the "Feature Class."


Anderson, Cincinnati, Colerain, Columbia, Crosby, Delhi, Green, Harrison, Miami, Millcreek (defunct), Spencer, Springfield, Storrs (defunct), Sycamore, Symmes, Whitewater [7]

Neighboring Counties

Family History Library

Addyston, Anderson Twp, Bevis, Bridgetown, Camp Dennison, Carthage, Cincinnati, Colerain Township, College Hill, Columbia Township, Crosby Township, Cumminsville, Delhi Township, Elmwood Place, Fairfield, Fernbank, Glendale, Green Township, Harrison, Lockland, Madisonville, Miami Heights, Monfort Heights, Montgomery, New Haven, North Bend, Norwood, Reading, Sayler Park, Springdale, Springfield Township, St. Bernard, Sycamore Township, The Village of Indian Hill, White Oak, Whitewater.  More may now be available.  If the community you are interested is not yet listed here, check the Family History Library Catalog.

FamilySearch Wiki/Online


Terrace Park, Ohio Building Survey contains history of every building in the village with stories, photos, census and a deed index.  The site also includes genealogy records for former residents.


For all Resources, please follow the link above.  Specific topics:

Societies and Libraries 


Hamilton County Chapter, Ohio Genealogical Society

Hamilton County Chapter, Ohio Genealogical Society Blog

P. O. Box 15865
Cincinnati, OH 45215-0865
(513) 956-7078

Cincinnati Newspaper Death Notice and Hamilton County Marriage Indexes are available on their website. HCGS has numerous publications including the "The Tracer" (journal) and "The Gazette" (newsletter).  HCGS sponsors or co-sponsors numerous genealogical events.


Public Library of Cincinnati and Hamilton County

800 Vine Street
Cincinnati, Ohio
(513) 369-6900

PLCH is one of the largest genealogical libraries in the country.  Very extensive Hamilton County history, genealogy and manuscript sources including a personal name card index to many local histories and manuscript materials.  Online resources include: Catalog, Virtual Library, Newsdex.

Cincinnati Historical Society Library

1301 Western Avenue
Cincinnati, Ohio 45203
(513) 287-7030

Large collection of manuscript and microfilm materials including deeds, photographs, directories, census, local histories and military rosters.  They have a vital record card index to some of their newspaper and manuscript materials (incomplete coverage).  Online resources include:  Name Index to Local Histories, Digital Journals, Catalog (incomplete)and Archive and Manuscript Registers (incomplete).

University of Cincinnati Archives & Rare Books Library

8th Floor Blegen Library
P.O. Box 210113
2602 McMicken Circle
Cincinnati, Ohio 45221-0113
(513) 556-1959
Location and Hours

The University of Cincinnati is the Ohio Network Of American History Research Center for Hamilton County.  They are the designated repository for government records of Adams, Brown, Butler, Clermont, Clinton, Hamilton, Highland and Warren Counties in Ohio.  The UC Archives has numerous records including the following online indexes:  Hamilton County Ohio Citizenship Records 1837-1916, Hamilton County Ohio Wills 1791-1901 and Deaths 1865-1912 (image and index, in progress).

Family History Centers

Web Sites

Upcoming Events

This calendar displays events that may be of interest to local genealogists. Not all of the events are sponsored by the Hamilton County Genealogical Society. Clicking on the link will bring up additional details. Please contact the sponsoring agency for further information and confirmation. If you have an event you would like included on the calendar, please contact hcgsohio@gmail.com. Thanks!

Calendar of Events

The Calendar of Events can also be viewed on the Hamilton County, Ohio Genealogical Society blog.

Sources Consulted

The following sources were consulted in creating the Hamilton County, Ohio Wiki and its subpages:

The Handybook of Genealogists: United States of America, 10th ed. Draper, Utah: Everton Pub., 2002.

Archives and Rare Books Department, University of Cincinnati. Inventory of Government Documents for Eight Counties of Southwest Ohio, Revised Edition. Cincinnati: University of Cincinnati, 1993.

Bell, Carol Willsey. Ohio Guide to Genealogical Sources. [Baltimore]: Genealogical Pub. Co., Inc., 1988.

Cyprych, Deb. "Hamilton County, Ohio, Probate Court Records: Online at Last!." The Tracer 31 (February 2010): 1, 6-9.

Cyprych, Deb. "Hamilton County, Ohio, Vital Records." The Tracer 27 (March 2006): 1, 9-15.

Dempsey, Jim. "TRACER, Article Index, 1979-2008." Hamilton County Genealogical Society. http://www.hcgsohio.org/researchaids.shtml : accessed 26 February 2011.

Graver, Bill and Deb Cyprych. "Cincinnati and Hamilton County Directories," The Tracer 27 (September 2006): 65, 71-74.

Graver, William H. Hamilton County, Ohio Guide to Recorder's Indexes and Documents 1794-1988. Milford, Ohio: Little Miami Pub. Co., 2003.

Ohio. Supreme court. Ohio Supreme Court Reports of Cases Argued and Decided in the Supreme Court of Ohio, Vol. 1, 1852-1853. Columbus: Osgood and Blake, 1853.

Sperry, Kim. Genealogical Research in Ohio, 2nd Edition. [Baltimore]: Genealogical Pub. Co., Inc., 2003.

Stratton, Liz. "Probate Court Records Update - Indexes to Vital Records." The Tracer 31 (November 2010): 102.

Terheiden, Connie Stunkel and Kenny R. Burck. Guide to Genealogical Resources in Cincinnati; Hamilton Co., Ohio, 6th Edition. Milford: Little Miami Pub. Co., 2009.

Wikipedia.  "Northwest Territory."  Wikipedia.  http://en.wikipedia.org/wiki/Northwest_Territory : accessed 26 February 2011.


  1. Deb Cyprych, "Hamilton County, Ohio Vital Records," The Tracer 27 (Mar 2006): 8.
  2. William H. Graver, Hamilton County, Ohio Guide to Recorder's Indexes and Documents 1794-1988," (Milford, Ohio: Little Miami Pub. Co., 2003), 68.
  3. http://en.wikipedia.org/wiki/Northwest_Territory last updated 3 February 2011
  4. The Handybook for Genealogists: United States of America, 10th ed. (Draper, Utah: Everton Pub., 2002).
  5. Carol Willsey Bell, Ohio Guide to Genealogical Sources ([Baltimore]: Genealogical Pub. Co., Inc., 1988).
  6. Connie Stunkel Terheiden and Kenny R. Burck, Guide to Genealogical Resources in Cincinnati; Hamilton Co., Ohio, 6th Edition(Milford: Little Miami Pub. Co., 2009).
  7. William H. Graver, Hamilton County, Ohio Guide to Recorder's Indexes and Documents 1794-1988(Milford: Little Miami Pub. Co., 2003).