Rock Island County Map, Illinois

Rock Island County Map Collection
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Rock Island County, Illinois

Rock Island County sits at the western edge of Illinois, right where the Mississippi and Rock rivers meet. The Quad Cities straddle the Mississippi here, with Rock Island and Moline on the Illinois side. It’s right next to Iowa, which is to the west of the Mississippi River.
This place is part industrial, part college town. Augustana College is situated in Rock Island. But manufacturing has been the backbone of the economy for generations. John Deere still has a major presence here. Outside the cities, you’ll find rolling hills and farmland.
The Rock Island Arsenal, an active military base, dominates the actual Rock Island. The Quad City International Airport connects the area to the wider world. Black Hawk State Historic Site is Native American history on display. There’s a lot to this county.
Category | Details |
---|---|
County Name | Rock Island County |
County Seat | Rock Island |
Population | Approximately 145,000 |
Cities, Towns, and Communities | Moline, Rock Island, East Moline, Silvis, and several smaller communities |
Interstates and Highways | Interstate 74, Interstate 280, U.S. Route 6, U.S. Route 67 |
FIPS Code | 17-161 |
Total Area (Land and Water) | 451 square miles (land: 418 sq mi, water: 33 sq mi) |
Adjacent Counties (and Direction) | Clinton County, Iowa (North), Whiteside County (Northeast), Henry County (Southeast), Mercer County (South), Louisa County, Iowa (Southwest), Muscatine County, Iowa (West), Scott County, Iowa (northwest) |
Time Zone | Central Time Zone (CT) |
State | Illinois |
Coordinates | 41.4942° N, 90.5900° W |
Etymology | Named after the Rock Island, a prominent island in the Mississippi River |
Major Landmarks | The Rock Island Arsenal, Black Hawk State Historic Site, and the John Deere Pavilion |
Website | Rock Island County Website |
PHYSICAL MAP
Rock Island County Topographic Map
Our topographic map has it all. Bluffs along the Mississippi River give way to flatter land inland. The Rock River meets the Mississippi here, shaping the terrain.

SATELLITE IMAGERY
Rock Island County Satellite Map
The Mississippi River dominates the west die. Cities like Rock Island and Moline are set along its banks. Bridges cross to Iowa, and farmland fills the eastern sections.

OUTLINE MAP
Rock Island County Blank Map
The Mississippi River forms its western border, separating Illinois from Iowa. The rest of the county mostly has straight, survey-drawn lines.

Neighboring Counties
Here are the 7 neighboring counties of Rock Island County:
Illinois County Map
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