Illinois State Data

Connect with Your State Leaders in Illinois

Meet the key players in Illinois's state government, including the most prominent elected officials from the executive and legislative branches. These leaders oversee elections, enforce laws, manage state finances, and set the policy agenda for Illinois.

Key executive branch officials

  • GovernorJ.B. Pritzker (D) - The state's chief executive who implements laws and manages the executive branch.
  • Secretary of StateAlexi Giannoulias (D) - Oversees statewide elections, business registrations, and key public records.

Key legislative branch officials

  • Speaker of the HouseChris Welch (D) - Leads the lower chamber and controls the flow of legislation and committee assignments.

2020 Census Data Shown

Key statewide indicators for Illinois from the 2020 Census: population, median age, median household income, education attainment, poverty and uninsured rates, and broadband access.

Updated: 2025-09-25

Population in Illinois (2020): 12.7 million residents

What is the total population of Illinois?

Illinois has 12.7 million residents as of the 2020 Census. Explore district-level demographics or find your representatives.

Total Population

Estimated total residents based on the 2020 Census.

Median age in Illinois: 38.9 years

What is the median age in Illinois?

The median age in Illinois is 38.9 years. Compare districts on the demographics page.

Median Age

Half of residents are younger, half older than this age.

Median household income in Illinois: $81,702

What is the median household income in Illinois?

The median household income in Illinois is $81,702. See how income varies by district on district demographics.

Median Household Income

Midpoint of household income distribution (in dollars).

Education in Illinois: HS or higher 14.9%; bachelor's or higher 37.2%

What share of adults in Illinois have a high school or bachelor's degree?

In Illinois, 14.9% of adults have a high school diploma or higher, and 37.2% have a bachelor's degree or higher.

Education Levels

Share of adults 25+ with at least a high school diploma or a bachelor's degree.

Poverty and uninsured in Illinois: poverty 11.7%; uninsured 7.0%

What are the poverty and uninsured rates in Illinois?

In Illinois, the poverty rate is 11.7% and the uninsured rate is 7.0%.

Poverty & Uninsured

Percent of people below the federal poverty line and the share without health insurance.

Broadband in Illinois: 5,001,904 subscriptions

How many households in Illinois have broadband?

In Illinois, broadband access is 5,001,904 subscriptions. Number of broadband subscriptions reported.

Broadband

Number of broadband subscriptions reported.

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