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  U.S. Marshals Service >> Local District Offices >> Northern District of Illinois >> Area of Service 
U.S. Marshals Service offices are based on the organizational structure of the Federal District Court system. Illinois is divided into three judicial districts to be known as the Northern, Central, and Southern Districts of Illinois.
 Map of Illinois, Northern District Highlighted Northern District of Illinois:

The Northern District comprises two divisions.

The Eastern Division comprises the counties of Cook, Du Page, Grundy, Kane, Kendall, Lake, La Salle and Will.

Court for the Eastern Division is held in Chicago.

The Western Division comprises the counties of Boone, Carroll, De Kalb, Jo Daviess, Lee, McHenry, Ogle, Stephenson, Whiteside and Winnebago.

Court for the Western Division is held in Rockford.

 
For Marshals Service office contacts in other counties:
Map of Illinois, Central District Highlighted Central District of Illinois:

The Central District comprises the counties of Adams, Brown, Bureau, Cass, Champaign, Christian, Coles, De Witt, Douglas, Edgar, Ford, Fulton, Greene, Hancock, Henderson, Henry, Iroquois, Kankakee, Knox, Livingston, Logan,
McDonough, McLean, Macoupin, Macon, Marshall, Mason, Menard, Mercer, Montgomery, Morgan, Moultrie, Peoria, Piatt, Pike, Putnam, Rock Island, Sangamon, Schuyler, Scott, Shelby, Stark, Tazewell, Vermilion, Warren and Woodford.

Court for the Central District is held in Champaign/Urbana, Danville, Peoria, Quincy, Rock Island and Springfield.
Map of Illinois, Southern District Highlighted Southern District of Illinois:

The Southern District comprises the counties of Alexander, Bond, Calhoun, Clark, Clay, Clinton, Crawford, Cumberland, Edwards, Effingham, Fayette, Franklin, Gallatin, Hamilton, Hardin, Jackson, Jasper, Jefferson, Jersey, Johnson, Lawrence, Madison, Marion, Massac, Monroe, Perry, Pope, Pulaski, Randolph, Richland, St. Clair, Saline, Union, Wabash, Washington, Wayne, White and Williamson.

Court for the Southern District is held in Alton, Benton, Cairo and East Saint Louis.

 
The organizational structure of the district can be found in the United States Code Title 28, Part I, Chapter 5, Section 93.