Illinois
Capital: Springfield · Statehood: 1818
Population (2020 Census)
12,812,508
Total area
57,914
mi² · 149,995 km²
GDP per capita 2024
$90,449
Nominal GDP 2024
$1,137,244
millions USD
Current constitution
July 1, 1971
Last amendment
November 8, 2022
# of constitutions
4
# of amendments
15
National rank
By population
#6 of 50
By area
#24 of 50
By statehood
#21 of 50
By # of amendments
#48 of 50
USA comparison
By population
+94% vs avg12,812,508 · this stateAvg: 6,615,195Median: 4,657,757Max: 39,538,223
By area
−21% vs avg55,519 sq mi · this stateAvg: 70,637 sq miMedian: 54,158 sq miMax: 570,641 sq mi
Regional comparison
By population
13,002,700
12,812,508
11,799,448
11,639,909
11,067,777
By area
67,037 sq mi
56,539 sq mi
55,857 sq mi
55,519 sq mi
50,337 sq mi
This stateUS statesLatin-American countries
Judicial branch
Court of last resort
Supreme Court
State appellate court of last resort
Intermediate appellate court
Appellate Court
Court of intermediate appellate jurisdiction
Trial court
Circuit Court
Trial court of general jurisdiction