Illinois’s nickname is Prairie State. It was the 21st admitted
state. It was officialy ratified on Dec 03, 1818. Illinois
has an average population of 12,947,252 spread between the
coordinates of 40.349457 Latitude and -88.986137 Longitude.
CAPITAL
Springfield
NICKNAME
Prairie State
POPULATION
12,947,252
AREA
55,584 mi²
ZIP CODES
60001 to 62999
AREACODES
13
POST OFFICES
502
COUNTIES
102
CITIES
2757
LAT/LONG
40.349457 / -88.986137
CURRENT TIME
00:29
Browse Illinois ZIP Codes
Frequently Asked Questions
Illinois is also known as Prairie State.
The capital city of Illinois is Springfield.
Illinois has a total population of 12,947,252.
The Illinois ratification of Constitution happened on Dec 03, 1818.
