Illinois vs Ohio: Population
Illinois has a larger population than Ohio by 1,013,060 people.
National Rankings
Where They Rank Nationally
See where both states fall among all 50 states for population.
Top 10 States — Population
California
Texas
Florida
New York
Pennsylvania
Illinois
Ohio
Georgia
North Carolina
Michigan
Illinois ranks 6th and Ohio ranks 7th nationally for population.
Related Context
Population in Context
Raw headcount only tells part of the story — density and education round it out.
What This Means
Illinois vs Ohio: Population in context
Illinois has a population of 12,812,508, compared with 11,799,448 in Ohio. Total resident population (2020 Census).
People Also Ask
Illinois vs Ohio Population — Common Questions
Q What is Illinois's population?
Illinois's population is 12,812,508.
Q What is Ohio's population?
Ohio's population is 11,799,448.
Q Which state has a higher population — Illinois or Ohio?
Illinois has a larger population than Ohio by 1,013,060 people.
More Comparisons: Illinois vs Ohio
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Sources: Core demographic data comes from the 2020 U.S. Census, with land area from U.S. Census Bureau TIGER files. Income, housing, affordability, and tax fields are maintained in our comparison dataset; purchasing-power figures use BEA Regional Price Parities. Minimum wage data comes from the U.S. Department of Labor, gas prices from AAA, and electricity rates from the U.S. Energy Information Administration. Political control and election fields use 2024 presidential results together with National Conference of State Legislatures data. Gun-law labels use the Giffords scorecard, alcohol system data comes from NABCA, and marijuana status uses NCSL's state cannabis laws tracker.