Government of Illinois

The government of Illinois, under the Constitution of Illinois, has three branches of government: executive, legislative and judicial. The executive branch is split into several statewide elected offices, with the Governor as chief executive, and has numerous departments, agencies, boards and commissions. Legislative functions are granted to the General Assembly, which is a bicameral body consisting of the 118-member House of Representatives and the 59-member Senate. The judiciary is composed of the Supreme Court and lower courts.

The executive branch is composed of six elected officers and their offices as well as numerous other departments. The six elected officers are:

The government of Illinois has numerous departments, agencies, boards and commissions, but the code departments, so called because they're established by the Civil Administrative Code of Illinois, provide most of the state's services:

Regulations are codified in the Illinois Administrative Code. The Illinois Register is the weekly publication containing proposed and adopted rules.

The Illinois General Assembly is the state legislature, composed of the 118-member Illinois House of Representatives and the 59-member Illinois Senate. The members of the General Assembly are elected at the beginning of each even-numbered year. Representatives elect from their chamber a Speaker and Speaker pro tempore, and senators elect from the chamber a President of the Senate.

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