For the purpose of registering voters under this Article in addition to the method provided for precinct registration...
... the office of the county clerk shall be open every day, except Saturday, Sunday, and legal holidays, from 9:00 a.m. to 5:00 p.m. On Saturdays the hours of registration shall be from 9:00 a.m. to 12:00 noon, and such additional hours as the county clerk may designate.
10 ILCS 5/4-6, this link opens in a new browser tab.
Registration of Electors
In Counties Having a
Population of Less than 500,000
...the office of the county clerk shall be open between 9:00 a. m. and 5:00 p. m. on all days except Saturday, Sunday and holidays, but there shall be no registration at such office during the 35 days immediately preceding any election required to be held under the law but if no precinct registration is being conducted prior to any election then registration may be taken in the office of the county clerk up to and including the 28th day prior to an election. On Saturdays, the hours of registration shall be from 9:00 a. m. to 12:00 p. m. noon.
During such 35 or 27 day period, registration of electors of political subdivisions wherein a regular, or special election is required to be held shall cease and shall not be resumed for the registration of electors of such political subdivisions until the second day following the day of such election.
In any election called for the submission of the revision or alteration of, or the amendments to the Constitution, submitted by a Constitutional Convention, the final day for registration at the office of the election authority charged with the printing of the ballot of this election shall be the 15th day prior to the date of the election.
10 ILCS 5/5-5, this link opens in a new browser tab.
Registration of Electors
In Counties Having a
Population of 500,000 or More
..the office of the Board of Election Commissioners shall be open during ordinary business hours of each week day, from 9 a.m. to 12 o'clock noon on the last four Saturdays immediately preceding the end of the period of registration preceding each election, and such other days and such other times as the board may direct.
10 ILCS 5/6-29, this link opens in a new browser tab.
Registration of Electors
In Jurisdictions With
Local Boards of Election Commissioners