What is the population of Rock Island County, IL?
Rock Island County in Illinois has a population of 142,995, per Census ACS 5-Year estimates. The median household income is $66,768 and the median age is 40.3.
Context
Counties are the primary administrative subdivisions of states and a stable unit for tracking population. Rock Island County's population reflects everyone within county lines, including residents of incorporated cities and unincorporated areas.
Explore Further
Related Questions
Frequently Asked Questions
Rock Island County in Illinois has a population of 142,995, per Census ACS 5-Year estimates. The median household income is $66,768 and the median age is 40.3.