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Where is Rock Island County, Illinois?

location of Rock Island county on a map

Rock Island County is a county equivalent area found in Illinois, USA. The county government of Rock Island is found in the county seat of Rock Island.

With a total 1,168.83 sq. km of land and water area, Rock Island County, Illinois is the 2341st largest county equivalent area in the United States. Home to 146,063 people, Rock Island County has a total 65593 households earning 48702 on average per year.

Rock Island County, Illinois - Quick Facts

FIPS Code 17161
Area Codes 309
Time Zone CST
Major Cities Moline (population: 45,071), Rock Island (population: 39,092), East Moline (population: 24,038), Milan (population: 10,540), Silvis (population: 7,804), Coal Valley (population: 5,860), Port Byron (population: 4,344), Taylor Ridge (population: 2,290), Hampton (population: 1,820), Andalusia (population: 1,283)
Land Area 56,395 sq miles
Water Area 427 sq miles
Household Income $48,702
Housing Units 65,593
Median Home Value $113,800
High School Grads 87% of population
Holders of Bachelors Degrees 22% of population
Retail Spending $11,636 per capita
Food & Accomodation Sales $224,219 per capita

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This page was last modified on June 30, 2016.