Search Onondaga County Genealogy

Onondaga County genealogy records go back to 1794, giving researchers more than two centuries of family data to work with. The county seat is Syracuse, where the county clerk, vital statistics office, and surrogate's court all keep records that matter for genealogy. Onondaga County is unusual in New York because the Office of Vital Statistics in Syracuse holds birth, death, and some marriage records rather than individual town clerks. The county public library system also has a strong local history and genealogy collection. Whether you search in person or by mail, this page covers the main offices and sources for Onondaga County genealogy research.

Onondaga County Clerk Records

The Onondaga County Clerk maintains land records from 1794 to the present. Court records start in 1795. The office also holds naturalization records, military records, state census records, and divorce records. This makes the clerk's office one of the most complete single sources for Onondaga County genealogy. The office is at 401 Montgomery Street in Syracuse, NY 13202. Phone is (315) 435-2227.

Land records include deeds, mortgages, and liens. Court records cover Supreme Court and County Court filings. The naturalization records can help trace immigrant ancestors who took their oath of citizenship in Onondaga County. Military discharge papers are also on file. Fees for copies run about $0.65 per page with $5.00 for a certified copy. You can visit in person during regular business hours or send a written request by mail.

Note: Divorce records in Onondaga County are filed with the county clerk, not the surrogate's court.

Onondaga County Vital Statistics

Most New York counties leave vital records with town and city clerks. Onondaga County does it differently. The Onondaga County Office of Vital Statistics holds birth and death records from 1865 to the present, with pre-1880 records at the town level. Marriage records go back to 1880. This centralized setup can make searching easier because you only need to check one office instead of tracking down individual town clerks across the county.

The office is at 421 Montgomery Street, Room 20, Syracuse, NY 13202. Call (315) 435-3241 for details. Request forms are available at the office or online. Fees apply for both record searches and document copies. Under Public Health Law Sections 4173 and 4174, genealogy copies of birth records are available after 75 years if the person is known to be dead. Death records open after 50 years. Marriage records need 50 years and both spouses must be dead.

If you are a direct-line descendant, you may be able to get records sooner by showing proof of your relationship and proof of death.

Onondaga County Library Genealogy

The Onondaga County Public Library Central Branch in Syracuse is one of the official repositories for the New York State Vital Records Index microfiche. This is a big deal for genealogy researchers because it means you can search the statewide indexes for births, marriages, and deaths right here in Syracuse instead of going to Albany. The library also has census records, city directories, and newspapers on microfilm.

The Central Library is at 447 South Salina Street, Syracuse, NY 13202. Phone is (315) 435-1900. The local history and genealogy section has staff who can help you find the right materials, though they will not do research for you. Collections include federal and state census data, local histories, and county records that have been microfilmed. FamilySearch has also microfilmed many Onondaga County records, and you can access those through FamilySearch.org for free.

The Onondaga County Public Library website has hours and details on using the genealogy collection.

The library's newspaper collection on microfilm is also valuable for finding obituaries, marriage announcements, and other family clues.

Onondaga County Probate Records

The Onondaga County Surrogate's Court has probate records from 1796 to the present. Wills, estate inventories, letters of administration, and guardianship files are all part of this collection. These documents often list heirs, describe real property, and name family members that other records miss entirely.

The court is at 401 Montgomery Street in Syracuse, NY 13202. Phone is (315) 671-2098. Send written requests by mail with the decedent's name and date of death. The court does not handle requests by email. Under the Surrogate's Court Procedure Act, probate records are public and available for genealogy purposes. The Estates, Powers and Trust Law also governs how estates are settled in New York, including rules for intestate succession when someone dies without a will.

Onondaga County Census Records

New York State ran its own censuses in 1825, 1835, 1845, 1855, 1865, 1875, 1892, 1905, 1915, and 1925. Onondaga County has originals or copies of most of these at the county clerk's office. The state censuses can fill gaps between federal census years and often include details like birthplace and occupation. The New York State Archives also has state census microfilm, and some years are available through Ancestry.com free for New York residents.

Note: Early state census records from 1825 through 1845 are less detailed than later ones and may only show head-of-household statistics.

Onondaga County Vital Statistics Office

Onondaga County is unusual because birth and death records, plus some marriage records, are on file with the Office of Vital Statistics in Syracuse rather than the county clerk. The office is at 421 Montgomery Street, Room 20, Syracuse, NY 13202. Phone is (315) 435-3241. Birth and death records start in 1865 at the town level and 1880 at the county level. Marriage records go back to 1880.

Cities in Onondaga County

Onondaga County includes Syracuse and several other communities. Two qualifying cities have their own genealogy pages with local resources.

Nearby Counties

Families often moved between these neighboring counties. Check them for related genealogy records.