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Ontario County, New York

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79,016
Active registered voters
44,766
Supervoters (56.65%)
5
Presidential cycles of results

Data as of June 19, 2026 · refreshed automatically from the official New York voter file

Ontario County, New York has 79,016 active registered voters — 36.6% Republican, 28.9% Democratic, and 28.5% with no party affiliation, as of June 2026.

Party registration

DEM 28.9%
REP 36.6%
NPA 28.5%
Democratic 22,836 · Republican 28,940 · No Party Affiliation 22,486 · Other parties 4,754
Source: Motion51 voter database — official New York voter file

How Ontario County voted for president

49.2
49.3
2008
48.2
49.8
2012
42.4
51.1
2016
48.6
48.7
2020
49.4
50.6
2024
■ Democratic %   ■ Republican %  ·  2024 total votes cast: 59,741

Election results are public records.

Source:  Official county canvasses via MIT Election Data + Science Lab

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Also see: Motion51 in New York · How to run for office in Ontario County · Pricing