Application for Voter Data File (PDF)
Political committees registered pursuant to the Illinois Campaign Finance Act or the Federal Campaign Act, or in the alternative, a governmental entity qualified under state law using the data for a governmental purpose and not in violation of any state laws or applicable ethics ordinances may purchase voter registration lists and associated voter history in electronic form.

Assumed Business Name -- Application (PDF)
Individuals doing business in Lake County under an assumed business name are required by law to register the business name with the Lake County Clerk's office.

Assumed Business Name -- Application Filing Instructions (PDF)
Instructions for filing Assumed Business Name application.

Assumed Business Name -- Supplementary Filing Instructions (PDF)
Supplementary Assumed Business Name filing instructions.

Assumed Business Name -- Business Owner Addition (PDF)
Individuals with an existing registered "Assumed Business Name" who wish to add an owner to the business.

Assumed Business Name - Change (PDF)
Individuals with an existing registered "Assumed Business Name" who wish to change the owners' legal name or address or business address change or addition.

Assumed Business Name - Withdrawal (PDF)
Individuals with an existing registered "Assumed Business Name" who wish to withdraw an owner(s) or cancel an Assumed Business Name.

Birth Record Request Form (PDF)
Form to request a copy of a birth record.

Birth Record Release Authorization Form (PDF)
Form to authorize a legal representative to request a copy of a birth record.

Civil Union Record Request Form (PDF)
Form to request a copy of civil union record.

Death Record Request Form (PDF)
Form to request a copy of a death record.

Declaration of Intent to be a Write-In Candidate (PDF)
Form to declare intention to become a write-in candidate.

Hospitalized Voter Form (PDF)
Ballot application for a voter admitted to a hospital, nursing home or rehabilitation center within 14 days of an Election. 

Marriage Record Request Form (PDF)
Form to request a copy of a marriage record.

Solicitor Registration Form (PDF)
Solicitors conducting door-to-door business in unincorporated Lake County are required to register with the Lake County Clerk's office and carry a Certificate of Registration while working. Applicants must appear in-person at the Lake County Clerk's office and present state ID or driver's license.
Statement of Economic Interests Form (PDF)
Blank Statement of Economic Interests Form
A new Statement of Economics Interests Form is required beginning Jan 1, 2022. Any Statement filed from that date must use the new form.

Student Election Judge Application (PDF)
The availability form will help determine where you may be scheduled to serve (home precinct, local area, out of township). You may also indicate your interest in serving as a Ballot Box Judge or a Voter Services Judge.

Vacancy in Office Form (PDF)
Form for local units of government to notify the Lake County Clerk's office of vacancies and appointments to office. 

Voter Registration - Mail-In Form (PDF)
Under federal law, citizens may apply to register to vote by mailing in an application. When you register by mail, your mail-in form must be postmarked prior to the close of registration. In addition, a person must vote for the first time in-person and may not vote by mail, unless the person first provides sufficient proof of identity and the Lake County Clerk verifies the person's proof of identity.

Application for Ballot by Mail (PDF)

Voting by Mail - Permanent Enrollment (PDF)
Registered voters who remain at the same address year-round and want to automatically receive a ballot application for desired elections.

Voting by Mail -- Snowbird Enrollment (PDF)
Voters who reside in Lake County but spend part of the year outside of the county (usually winters) may enroll in our Snowbird Program. During the periods requested, an application for ballot will be mailed to the alternate mailing address designated by the voter.

Voting by Mail -- Student Enrollment (PDF)
Students who temporarily live outside their precinct while attending school may complete this form to enroll in the Student Voting by Mail Program and receive an application for ballot at the address specified.

Voting by Mail - Uniformed and Overseas Citizens (PDF)
This form is for uniformed service members, their families, and citizens residing outside the United States. It is used to register to vote, request a ballot by mail, or update your contact information. See your state's instructions at