Welcome to Rock Island County ...
Time Zone: Rock Island County lies in the Central Time Zone (CST/CDT) and observes daylight saving time.
The community of Rock Island is the Seat for Rock Island County.
Rock Island County was founded in 1831 and was created by taking area from Jo Daviess County.
From the Census Estimates for 2019, <1> Rock Island had a population of 141,879 people. This is a decrease of 3.88% since the last Census (which gave a population of 147,610 people in 2010).
At the time of the 2010 Census, Rock Island represented 1.15% of the total population of Illinois.
Below are some of the communities located in Rock Island County:
- Andalusia
(11 miles [17.7 km] to the west)
- Carbon Cliff
(5 miles [8 km] to the east)
- Coal Valley
(3 miles [4.8 km] to the southeast)
- Cordova
(16 miles [25.7 km] to the northeast)
- East Moline
(3 miles [4.8 km] to the east)
- East Moline is located in Rock Island County (IL)
- Jump to our Gazetteer entry for East Moline
- Population from the 2020 Census: 20,473 people
- Hampton
(7 miles [11.3 km] to the northeast)
- Hampton is located in Rock Island County (IL)
- Jump to our Gazetteer entry for Hampton
- Population from the 2020 Census: 1,738 people
- Jump to TripAdvisor's Tourism page for Hampton <2>
- Hillsdale
(19 miles [30.6 km] to the northeast)
- Milan
(4 miles [6.4 km] to the southwest)
- Milan is located in Rock Island County (IL)
- Jump to our Gazetteer entry for Milan
- Population from the 2020 Census: 4,945 people
- Jump to TripAdvisor's Tourism page for Milan <2>
- Continue List (7 more) ...
- Moline
(Less than 2 miles to the north)
- Moline is located in Rock Island County (IL)
- Jump to our Gazetteer entry for Moline
- Population from the 2020 Census: 41,065 people
- Jump to TripAdvisor's Tourism page for Moline <2>
- Oak Grove
(6 miles [9.7 km] to the southwest)
- Oak Grove is located in Rock Island County (IL)
- Jump to our Gazetteer entry for Oak Grove
- Population from the 2020 Census: 585 people
- Port Byron
(11 miles [17.7 km] to the northeast)
- Rapids City
(10 miles [16.1 km] to the northeast)
- Reynolds
(13 miles [20.9 km] to the southwest)
- Rock Island
(3 miles [4.8 km] to the west)
- Silvis
(5 miles [8 km] to the east)
- Silvis is located in Rock Island County (IL)
- Jump to our Gazetteer entry for Silvis
- Population from the 2020 Census: 7,473 people
- Jump to TripAdvisor's Tourism page for Silvis <2>
Websites of Interest ...
- Websites specific to Illinois
- Websites specific to Rock Island County
- Websites for nearby counties
- Clinton County
- Whiteside County
- Henry County
- Mercer County
- Louisa County
- Muscatine County
- Scott County
- Cemetery Information and Directories
Footnotes ...
| <1> | On a yearly basis, the US Census Bureau creates an estimate of the county's population. Keep in mind that this is an estimate and not an actual count. The last physical count was the 2010 Census and the next count will be for the 2020 Census. |
| <2> | While we're fans and frequent users of TripAdvisor, you should know that we're also members of the TripAdvisor affiliate program. |