Rock Island County, County administrative division at Mississippi River, Illinois, US.
Rock Island County extends over 451 square miles of land and water, bordered by the Mississippi River to the west and containing the cities of Rock Island and Moline.
The county formed in 1831 from Jo Daviess County, taking its name from an island in the Mississippi River that later became Arsenal Island.
The Rock Island Arsenal, established in the 1880s, stands as a primary military equipment manufacturing center, employing thousands of local residents.
Three interstate highways cross through the county: I-74, I-80, and I-88, connecting residents to major metropolitan areas in the region.
The county maintains a consistent Democratic voting pattern since 1932, marking a distinct shift from its earlier Republican preferences.
Location: Illinois
Inception: 1831
Capital city: Rock Island
Shares border with: Clinton County, Mercer County, Muscatine County, Henry County, Whiteside County, Scott County, Louisa County
Website: http://co.rock-island.il.us
GPS coordinates: 41.47000,-90.57000
Latest update: May 27, 2025 10:06
Rock Island Arsenal
5.7 km
John Deere Classic
14.9 km
John Deere World Headquarters
12 km
Vibrant Arena at The MARK
5.9 km
Modern Woodmen Park
5.5 km
I-74 Bridge
7.2 km
Black Hawk State Historic Site
390 m
Government Bridge
5.5 km
Figge Art Museum
5.7 km
Davenport Skybridge
5.6 km
Lock and Dam No. 15
5.4 km
Rock Island Centennial Bridge
5.1 km
John Deere House
5.5 km
Iowa Soldiers' Orphans' Home
9 km
Marycrest College Historic District
6.9 km
Putnam Museum
7.3 km
Fort Armstrong
5.2 km
Fred Schwengel Memorial Bridge
21 km
Wildcat Den State Park
26 km
Joseph F. Bettendorf House
8.4 km
Lock and Dam No. 14
18.3 km
John Deere Pavilion
6 km
Rock Island National Cemetery
6 km
Vander Veer Botanical Park
8.2 km
Oakdale Memorial Gardens
8.7 km
River Music Experience
5.7 km
Village of East Davenport
7 km
Weyerhaeuser House
3.7 kmReviews
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