Skip to main content
  • Medicaid Provider Alert: Provider revalidation has begun and those not completing the process risk disenrollment.  Check your account now to learn when your revalidation is due. More information here.
  • The Cook Central Office, 36 South Wabash Avenue, Chicago, will close 02/03/2025.  The new Cook Central Office will open at 115 South LaSalle, Chicago, for in-person service on 02/10/2025.  
  • ​UPDATE (1/21/2025): The State Disbursement Unit (SDU) has processed all payments impacted by the outage and is back to normal operation. To verify payments, please log into the SDU parent portal or contact the SDU Customer Service Call Center at 877.225.7077.  For SDU business hours, click here.
Elizabeth M. Whitehorn, Director

Regional Office Locations

Aurora Region

Aurora Office: 2711 New York, Suite 203, Aurora, IL  60502

HFS.ARO@Illinois.gov

Lake County Satellite Office: 2133 Belvidere Road, Waukegan, IL 60085

Counties served: Kane, DuPage, Lake

Belleville Region

Collinsville Office: 1803 Ramada Boulevard, Suite B204, Collinsville, IL 62234

HFS.BRO@Illinois.gov

Counties served: Madison, St. Clair

Champaign Region

Champaign Office: 313 North Mattis, Suite 218, Champaign, IL 61821-2460

HFS.CRO@Illinois.gov

Counties served: Macon, Moultrie, Piatt, Shelby, Vermilion

Cook County Region

Cook Central Office: 36 South Wabash Avenue, Chicago, IL 60603

Hfs.CookCentral@illinois.gov

Cook Southern Office: 6221 South Emerald Drive, Chicago, IL 60621

Hfs.CookSouthern@illinois.gov

County served: Cook

Find your Region using your Zip code (pdf)

Joliet Region

Joliet Office: 16 West Cass Street, 4th Floor, Joliet, IL 60432

HFS.JRO@Illinois.gov

LaSalle County Satellite Office: 1570 First Avenue, Ottawa, IL 60432

Counties served: Bureau, Grundy, Iroquois, Kankakee, Kendall, LaSalle, Livingston, Will

Marion Region

Marion Office: 3419 Professional Park Drive, Marion, IL 62959

HFS.MRO@Illinois.gov

Counties served: Alexander, Bond, Clay, Clinton, Crawford, Edwards, Fayette, Franklin, Gallatin, Hamilton, Hardin, Jackson, Jasper, Jefferson, Johnson, Lawrence, Marion, Massac, Monroe, Perry, Pope, Pulaski, Randolph, Richland, Saline, Union, Wabash, Washington, Wayne, White, Williamson

Peoria Region

Peoria Office: 401 Main Street, Suite 680, Peoria, IL 61602

HFS.PRO@Illinois.gov

Knox County Satellite Office: 467 E. Main, Suite B, Galesburg, IL 61401

Rock Island County Satellite Office: 4705 44th Street, Suite A, Rock Island, IL 61201  

Counties served: Fulton, Henderson, Henry, Knox, Marshall, McLean, Mercer, Peoria, Putnam, Rock Island, Stark, Tazewell, Warren, Woodford

Rockford Region

Rockford Office: 175 Executive Parkway, Suite 107, Rockford, IL 61107

HFS.RRO@Illinois.gov

Counties served: Boone, Carroll, DeKalb, JoDavies, Lee, McHenry, Ogle, Stephenson, Whiteside, Winnebago

Counties served: Boone, Carroll, DeKalb, JoDaviess, Lee, McHenry, Ogle, Stephenson, Whiteside, Winnebago

Springfield Region

Springfield Office: 607 East Adams Street, Springfield, IL 62701

HFS.SRO@Illinois.gov

Adams County Satellite Office: 300 Maine Street, Quincy, IL 62301

Counties served: Adams, Brown, Calhoun, Cass, Christian, DeWitt, Greene, Hancock, Jersey, Logan, Macoupin, Mason, McDonough, Menard, Montgomery, Morgan, Pike, Sangamon, Schuyler, Scott