County Clerk's Office - Mary E. McClellan, McHenry County Clerk

Mary E. McClellanPhone: (815) 334-4242
Fax:  (815) 334-8727
Office Hours: 8:00 AM to 4:30 PM


Mailing Address

McHenry County Clerk's Office
2200 N. Seminary Ave
Woodstock, IL 60098

Location Address

McHenry County Clerk's Office
667 Ware Rd, Suite 107
Woodstock, IL 60098
Get Directions



Mission Statement

It is the mission of the Clerk's office to provide prompt, courteous and knowledgeable service to all of our customers, whether at our counter, by mail, telephone or via our website.

As the chief election authority, the County Clerk provides a myriad of voter and candidate services and administers McHenry County elections in a fair, unbiased, accurate, efficient, and timely manner. The Clerk's office also maintains vital records (birth, marriage, and death), public filings, tax and real estate services as well as recording the McHenry County Board proceedings.

The strength of the County Clerk's office lies in our staff's dedication and knowledge. We look forward to your comments via email and hope you check out our innovations. Please know that you are always welcome in the McHenry County Clerk's office.

Precinct Finder & Sample Ballots

Election Results 

Polling Locations


Free viewers are required for some of the attached documents.
They can be downloaded by clicking on the icons below.