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Onondaga County, New York
Genealogy, History & Facts

Onondaga County, New York Facts

When was Onondaga County, NY Created?
Onondaga County was created on March 5, 1794 from Herkimer County.

What is the County Seat of Onondaga County, NY?
The County Seat is located in Syracuse and in addition the county government website is

What counties are adjacent to Onondaga County, NY?
Bordering Counties are Oswego CountyMadison CountyCortland County, Cayuga County.

Onondaga County, NY Vital Records

Where can find Onondaga County Birth, marriage, Divorce and Death Records?
Onondaga County vital records can be found at the New York Department of Health which has copies of birth records after 1881 and death records after 1880, copies of marriage since 1881 and a Divorce records since 1847 . There is a fee for each copy requested. Please refer to the information to the Statewide Vital Records in New York for current fees and application process.

You can search online for Onondaga County Birth, Marriage, Divorce or Death Records. You can also Order Electronically Online or can download an application for New York Birth and Death CertificateMarriage and Divorce Certificate Application to mail.

You can also get Vital Records from the Onondaga County Health Department, 421 Montgomery St # 20, Syracuse, NY 13202; (315) 435-3241; Your request must clearly state “For Genealogical Purposes Only.”

Onondaga County, NY Census Records

What Onondaga County, NY census records are available?
There are many types of census records for Onondaga County guide you in researching your family tree. Federal Population Schedules are available for 1790-189019001910192019301940.

Onondaga Co. Mortality Schedules can be obtained for 1850, 1860, 1870 and 1880. Onondaga Co. Industry and Agriculture is available for 1850, 1860, 1870 and 1880. Onondaga Co. Union Veterans Schedules can be obtained for 1890.

There are New York State censuses from 1880, 1892, 19051855186518751892190519151925. You can get free downloadable and also printable census forms to help you with your research. See Also New York Census Records Research Guide

Onondaga County, NY Courthouse and Government Records

Onondaga County Courthouse

What genealogical records can I find in the Onondaga County Courthouse?
Researchers frequently overlook the great importance of Onondaga County court, probate, and land records data as a useful resource of ancestry and genealogy information. Buried away in New York courthouses and archives everywhere are the ambitions and frustrations of countless New York residents. The possibilities are excellent that your forefathers have left a comprehensive document of at least a number of facets of their lives in the Onondaga County court records. Even if your forebears is not referred to in a Court case, contemplate all of the other procedures that could have lead to him or her to appear in court records. See Also New York Courthouse Records Research Guide.

Onondaga County, NY Societies and Family History Resources

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

Where can I connect with other Onondaga County, NY Researchers through message boards and forums?

What other genealogical resources are available in Onondaga County, NY?
The following are web links to Genealogy, Records and Resources pertaining to Onondaga County. Most of these genealogy links fall into 3 categories: Business oriented Sites, Private Sites or Organization Sites. Some have free access some have to have a cost. This is simply a listing that has been compiled or submitted. I do not recommend or promote one genealogy site over another.

Onondaga Co. NY Books, Newspapers & Publications

Onondaga Co. NY Cemeteries & Church Records

Onondaga Co. NY Family Websites, Pictures & Histories

Onondaga Co. NY General and History Websites

Onondaga Co. NY Immigration & Naturalization

Onondaga Co. NY Maps, Atlases & Gazetteers

Onondaga Co. NY Military Records

Onondaga Co. NY Schools & Directories