Madison County

Alhambra
Alton
Bethalto
Collinsville
East Alton
Edwardsville
Glen Carbon
Godfrey
Granite City
Grantfork
Hamel
Hartford
Highland
Livingston
Madison
Marine
Maryville
New Douglas
Pontoon Beach
Rosewood Heights
Roxana
South Roxana
St. Jacob
Troy
Venice
Williamson
Wood River
Worden
HASC code :US-IL-MD
FIPS 6-4 code :17119
Capital :Edwardsville
Largest city :Granite City
Elevation :High : New Douglas 619 ft
Low : Hartford 0 ft
Population :258,941
Land Area :725 sq mi
(1,878 km²)
Density :357.16/sq mi
(137.90/km²)
Time zone :UTC -6
Website :http://www.co.madison.il.us