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Rock Island County
Sign in to saveAlso known as Rock Island County, Illinois, Rock Island County, IL
county in Illinois, United States
Key facts
- Country
- United States
- State
- Illinois
- Named after
- Rock (Arsenal) Island
- Seat
- Rock Island
- Largest city
- Moline
- Total
- 451 sq mi (1,170 km )
- Land
- 428 sq mi (1,110 km )
- Water
- 24 sq mi (62 km ) 5.2%
- Estimate 2025
- 141,869
- Density
- 338/sq mi (131/km )
- Time zone
- UTC−6 ( Central )
- Summer dst
- UTC−5 ( CDT )
- Congressional district
- 17th
- Website
- rockislandcountyil .gov
via Wikipedia infobox
Wikidata facts
- Named after
- Rock Island Arsenal
- Country
- United States
- Located in
- Illinois
- Contains
- Rock Island
- Capital
- Rock Island
- Population
- 144672
- Area
- 1168
- Shares border with
- Mercer County
- Official website
- www.co.rock-island.il.us
- Image
- Rock Island County Courthouse - Rock Island, Illinois.JPG
- Households
- 60607
Show 11 more facts
- Commons category
- Rock Island County, Illinois
- topic's main category
- Category:Rock Island County, Illinois
- inception
- 1831-00-00
- category for people born here
- Category:Births in Rock Island County, Illinois
- category of associated people
- Category:People from Rock Island County, Illinois
- different from
- Rock County
- category for people who died here
- Category:Deaths in Rock Island County, Illinois
- water as percent of area
- 5.2
- native label
- Rock Island County
- topic has template
- Template:Rock Island County, Illinois
- per capita income
- 30380
Sources (8)
via Wikidata · CC0
~8 min read
Encyclopedic overview
Rock Island County is a county located in the U.S. state of Illinois, bounded on the west by the Mississippi River. According to the 2020 census, it had a population of 144,672. Its county seat is Rock Island; its largest city is neighboring Moline. Rock Island County is one of the four counties that make up the Davenport-Moline-Rock Island, IA-IL Metropolitan Statistical Area.
History
Excerpted from Wikipedia’s “Rock Island County” article, available under the CC BY-SA 4.0 licence.