|
First Letter
|
County(s)
|
Population
|
Answer
|
|
C
|
Cook
|
2,611,867
|
Chicago
|
|
A
|
DuPage
|
175,795
|
Aurora
|
|
N
|
DuPage
|
150,795
|
Naperville
|
|
J
|
Will
|
150,647
|
Joliet
|
|
R
|
Winnebago
|
144,420
|
Rockford
|
|
E
|
Kane
|
112,438
|
Elgin
|
|
S
|
Sangamon
|
111,374
|
Springfield
|
|
P
|
Peoria
|
108,870
|
Peoria
|
|
C
|
Champaign
|
89,736
|
Champaign
|
|
W
|
Lake
|
86,657
|
Waukegan
|
|
B
|
McLean
|
78,521
|
Bloomington
|
|
C
|
Cook
|
78,409
|
Cicero
|
|
B
|
Will
|
74,265
|
Bolingbrook
|
|
S
|
Cook
|
73,970
|
Schaumburg
|
|
E
|
Cook
|
73,240
|
Evanston
|
|
A
|
Cook
|
72,545
|
Arlington Heights
|
|
D
|
Macon
|
67,165
|
Decatur
|
|
S
|
Cook
|
63,105
|
Skokie
|
|
P
|
Cook
|
62,996
|
Palatine
|
|
D
|
Cook
|
56,380
|
Des Plains
|
|
O
|
Cook
|
56,094
|
Orland Park
|
|
O
|
Cook
|
54,125
|
Oak Lawn
|
|
M
|
Cook
|
52,701
|
Mount Prospect
|
|
B
|
Cook
|
52,694
|
Berwyn
|
|
T
|
Cook
|
52,594
|
Tinley Park
|
|
N
|
McLean
|
52,528
|
Normal
|
|
W
|
DuPage
|
52,354
|
Wheaton
|
|
O
|
Cook
|
50,510
|
Oak Park
|
|
D
|
DuPage
|
49,425
|
Downers Grove
|
|
P
|
Will
|
49,111
|
Plainfield
|
|
H
|
Cook
|
48,711
|
Hoffman Estates
|
|
G
|
Cook
|
45,811
|
Glenview
|
|
E
|
DuPage
|
45,074
|
Elmhurst
|
|
L
|
DuPage
|
43,369
|
Lombard
|
|
B
|
Lake
|
42,080
|
Buffalo Grove
|
|
M
|
Rock Island
|
41,343
|
Moline
|
|
C
|
McHenry
|
41,282
|
Crystal Lake
|
|
R
|
Will
|
41,055
|
Romeoville
|
|
D
|
DeKalb
|
40,205
|
DeKalb
|
|
B
|
St. Clair
|
39,699
|
Belleville
|
|
B
|
DuPage
|
39,308
|
Bartlett
|
|
O
|
Kendall
|
38,640
|
Oswego
|
|
C
|
DuPage
|
38,433
|
Carol Stream
|
|
Q
|
Adams
|
38,398
|
Quincy
|
|
U
|
Champaign
|
38,196
|
Urbana
|
|
P
|
Cook
|
36,830
|
Park Ridge
|
|
W
|
Cook
|
36,751
|
Wheeling
|
|
S
|
Cook
|
36,678
|
Streamwood
|
|
C
|
Kane
|
36,559
|
Carpentersville
|
|
R
|
Rock Island
|
35,540
|
Rock Island
|
|