Rock Island Population 2026
Rock Island has a population of 38,620, making it the #1155 biggest city in 🇺🇸 United States, located in Illinois. It is about 228× smaller than New York City, the country's biggest city.
Population (city proper)
38,620
Rank in United States
#1155
Coordinates
41.51°N, 90.58°W
~171 m elevation · America/Chicago
Distance to capital (Washington)
1,185 km
736 miles, straight line
Other big cities in Illinois
| City | Population | Rank in United States |
|---|---|---|
| Chicago | 2,664,452 | #3 |
| Aurora | 200,661 | #125 |
| Rockford | 148,278 | #184 |
| Joliet | 147,861 | #186 |
| Naperville | 147,100 | #190 |
| Peoria | 115,070 | #259 |
| Springfield | 114,394 | #262 |
| North Peoria | 113,004 | #266 |
Cities near Rock Island
- Davenport102,582 people · ~2 km away
- Moline42,681 people · ~5 km away
- Bettendorf35,505 people · ~6 km away
- East Moline21,350 people · ~11 km away
- Muscatine23,968 people · ~40 km away
- Clinton26,064 people · ~49 km away
FAQ
What is the population of Rock Island?
Rock Island has a population of 38,620 (city proper, latest official figure via GeoNames), making it the #1155 biggest city in United States.
What state is Rock Island in?
Rock Island is located in Illinois, United States.
Is Rock Island the capital of United States?
No, the capital of United States is Washington D.C., about 1,185 km away.
Sources & notes
Population refers to the city proper (municipal boundaries), not the metropolitan area. Source: GeoNames (CC BY 4.0), retrieved 2026-07-07. Country data: UN World Population Prospects 2024.
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