SurveyUSA Regional Breakdowns for state of Illinois
Chicago Suburban Cook County Collar Counties Downstate
1 ZIP Codes 60600-60699 1 Cook* 1 DeKalb 1 Adams
2 DuPage 2 Alexander
* Not including ZIP Codes 60600-60699 3 Grundy 3 Bond
4 Kane 4 Boone
5 Kankakee 5 Brown
6 Kendall 6 Bureau
7 McHenry 7 Calhoun
8 Will 8 Carroll
9 Cass
10 Champaign
11 Christian
12 Clark
13 Clay
14 Clinton
15 Coles
16 Crawford
17 Cumberland
18 De Witt
19 Douglas
20 Edgar
21 Edwards
22 Effingham
23 Fayette
24 Ford
25 Franklin
26 Fulton
27 Gallatin
28 Greene
29 Hamilton
30 Hancock
31 Hardin
32 Henderson
33 Henry
34 Iroquois
35 Jackson
36 Jasper
37 Jefferson
38 Jersey
39 Jo Daviess
40 Johnson
41 Knox
42 La Salle
43 Lake
44 Lawrence
45 Lee
46 Livingston
47 Logan
48 Macon
49 Macoupin
50 Madison
51 Marion
52 Marshall
53 Mason
54 Massac
55 McDonough
56 McLean
57 Menard
58 Mercer
59 Monroe
60 Montgomery
61 Morgan
62 Moultrie
63 Ogle
64 Peoria
65 Perry
66 Piatt
67 Pike
68 Pope
69 Pulaski
70 Putnam
71 Randolph
72 Richland
73 Rock Island
74 Saline
75 Sangamon
76 Schuyler
77 Scott
78 Shelby
79 St. Clair
80 Stark
81 Stephenson
82 Tazewell
83 Union
84 Vermilion
85 Wabash
86 Warren
87 Washington
88 Wayne
89 White
90 Whiteside
91 Williamson
92 Winnebago
93 Woodford