Welcome to Cook County's 9th District,
Peter Silvestri

Everything you need to know about Cook County

My door is always open . . .

Cook County is responsible for providing essential services in the areas of public safety, public health, the court system, elections, tax assessment and appeals, recording deeds, and managing forest preserves. As an independent-minded member of the Board, I have worked hard to combine fiscal responsibility with social awareness. I am honored to serve the people of the 9th district, which includes: portions of the far northwest side of Chicago; Park Ridge, River Forest, Elmwood Park, Harwood Heights, Mount Prospect, Norridge, River Grove, Rosemont, and Schiller Park; portions of Arlington Heights, Melrose Park, Morton Grove, Niles, and Prospect Heights; and unincorporated Norwood Park, Maine, and Wheeling Townships. 

Cook County government is here for you

Click below for a complete list of:

  • Resident services
  • How to do business
  • County elected officials
  • Agencies
  • Meeting calendar

Tax help at your fingertips

Whether you have a question about your tax bill, your assessment, or an exemption, the link below should provide all the help you need. If you still have questions, give us a call.

Voter Information & Registration

Suburban Residents

Click the button below to be directed to the Cook County Clerks website for information on voter registration, your elected officials, working on election day, and more.

Chicago Residents

Click the button below to be directed to the Chicago Board of Elections website detailing information on voter registration, early voting, and more.

Cook County Clerk--Vital Records

The Cook County Clerk's office and website can guide you through how to obtain birth and death certificates, marriage and domestic partner licenses, notary commissions, and much more.

The Forest Preserve District of Cook County is the largest forest preserve district in the U.S.!


Check here regularly as we highlight some of 

Cook County's recent accomplishments.

Pension Health

While we will continue to work on getting comprehensive pension reform in Springfield, we are taking the significant steps we can to reduce unfunded pensions.    

This year, we will be making a supplemental pension payment of $353.4 million over and above our required contributions.  

Check out the new baby gray seal--and more--at Brookfield Zoo

Get Your Spring on at the Chicago Botanic Garden


Yes, I want to stay up-to-date on Cook County news, 9th District tax seminars, and more.

Contact Us

Better yet, see us in person!

118 N Clark St., Chicago, Illinois 60602


Drop us a line!


District Office

5515 N. East River Road, Chicago, Illinois 60656



Monday - Friday: 9am - 5pm