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.

Upcoming Tax Workshops

Leyden Township

Assessor Tax Appeal Seminar 

July 24

6:30 p.m.

Schiller Park Community Center

4501 25th Avenue, Schiller Park

Leyden Township

Assessor Tax Appeal Seminar

July 30

6:00 p.m.

American Legion Hall

8664 W. Grand, River Grove

Norwood Park Township

Board of Review Workshop

July 31

6:00 p.m.

Estell Sieb Center

7774 W. Irving Park Road, Norridge

Maine Township

Board of Review Workshop

August 2

6:00 p.m.

Maine Township Office

1700 Ballard Road, Park Ridge

Norwood Park Township

Board of Review Workshop

August 2

6:30 p.m.

Union Ridge School

4600 N. Oak Park Avenue, Harwood Heights

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.

A canyon tour in Cook County? Yup! Check out the Forest Preserve District's summer schedule . . .


Check here regularly as we highlight some of 

Cook County's recent accomplishments.

Restoration & Redevelopment of the old Cook County Hospital

Redevelopment and restoration of the old Cook County Hospital--a Beaux Arts landmark--has been turned over to a private development team with the execution of a long-term lease. The developer, Civic Health Development Group, plans to invest $130 million of private dollars to transform the historic building into an anchor and catalyst for the Medical District and Near West Side. Historic restoration plans have been developed and refined by the world-renowned architecture firm of Skidmore, Owings & Merrill.     

The project, which has just broken ground, is being developed without the use of any Cook County public subsidies and/or funds. Construction will begin with interior, non-structural demolition, followed by restoration. Hyatt House/Hyatt Place will be the first tenants of the rehabilitated structure. Additional spaces include medical offices and retail. Stay tuned!

Check out the new baby gorilla--and more--at Brookfield Zoo

Chicago Botanic Garden: Butterflies & Blooms Exhibit--through September 3


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

Contact Us

Drop us a line!

Better yet, see us in person!

118 N Clark St., Chicago, Illinois 60602


District Office

5515 N. East River Road, Chicago, Illinois 60656



Monday - Friday: 9am - 5pm