Rock Island County Map, Illinois

Detailed road and geographic map of Rock Island County.

County Information

  • State: Illinois
  • FIPS Code: 17161
  • Population: 144,672
  • Area (sq mi): 427.6
  • Density: 338.3/sq mi
  • Growth Trend: +1.2%
  • Households: 66,729
  • Election Data: Republican
  • Climate Zone: Cold/Continental

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Overview

Rock Island County is located in the U.S. state of Illinois. It has a land area of approximately 427.6 square miles.