top of page

Genealogy Resources for Ontario County, New York

Ontario County was formed from part of Montgomery County in 1789. From Ontario County, the following counties were formed: Steuben County (1796), Genesee County (1802), and in 1823 Wayne County and Yates County were formed from parts of Ontario County and Steuben County. The County Seat is Canandaigua.

Ontario County encompasses approximately 644 square miles* in the State of New York.

New York

^

Cancel
Save
!
Save & Close

These resources for the State of New York may contain resources for Ontario County:

Free Genealogy Resources for this County
More Helpful Genealogy Items

Share your tips, resources, or comments!

ADVERTISEMENT

Ancestors born here

Name
Branch
Birth Date
Town

Ancestors married here

Name
Branch
Date
Town

Ancestors who died here

Name
Branch
Date
Town

Ancestors buried here

Name
Branch
Town
Place

>

State Capital: 

State Established:

Ontario County

Albany

Jul 26, 1788

Scroll down to see my ancestors from this County!!

Places in this County

My blogs about Ontario County

AffiliatedAncestors
Ancestors
Genealogy Resources by County
Pin it

Sign up or log in to save this page to your Site Favorites.

bottom of page