Population 2010

677,560

Population 2020

696,355

Registered Voters

455,035

Republicans

Democrat

Minor Party

No Party

Municipalities

Superintendent of Schools

Treasurer / Tax Collector

County Commission

Brief Political History

Like most of the collar counties, Will County was once a Republican stronghold. It went Republican in all but three elections from 1892 to 1988. Since the 1990s, it has become a swing county. It voted for the national winner in every presidential election from 1980 to 2012, but Chicago-born Hillary Clinton won it along with the rest of the "collar counties" aside from McHenry in 2016.

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