61204 ZIP Code — Rock Island, IL
Rock Island County, Illinois
ZIP code 61204 is located in Rock Island, Illinois, within Rock Island County. It covers approximately 0.00 square miles and serves a population of 0 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 309.
0
population
0.00
sq mi land
Standard
ZIP type
Central (CT)
timezone
61204 ZIP code map
Cities in ZIP code 61204
Below are the cities the US Postal Service accepts for ZIP code 61204. Using any city not on this list may result in mail delivery delays.
| City | Status |
|---|---|
| Rock Island | Acceptable |
Demographics
updated 05/2026
| Population | |
|---|---|
| Total population | 0 |
| Population density | 0 / sq mi |
| State FIPS | 17 |
| County FIPS | 161 |
| Geography | |
|---|---|
| Land area | 0.00 sq mi |
| Water area | 0.00 sq mi |
| Latitude | 41.5096 |
| Longitude | -90.5787 |
| Timezone | Central (CT) |
| Area code | 309 |