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Marion County, Indiana

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635,259
Active registered voters
618
Precincts
5
Presidential cycles of results

Data as of August 26, 2026 · refreshed automatically from the official Indiana voter file

Marion County, Indiana has 635,259 active registered voters across 618 precincts, as of August 2026.

Party registration

Indiana doesn't register voters by party, so there's no party breakdown to show. Party lean is usually inferred from primary participation; that data is in the voter file and available inside Motion51.

How Marion County voted for president

63.8
35.4
2008
60.2
38.1
2012
58.9
36.1
2016
63.6
34.4
2020
63.0
35.3
2024
■ Democratic %   ■ Republican %  ·  2024 total votes cast: 351,910

Election results are public records.

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

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Also see: Motion51 in Indiana · How to run for office in Marion County · Pricing