Postal reference / United States
61204Rock Island, Illinois
ZIP code 61204 is a United States postal code for Rock Island, Illinois. Its county association is Rock Island County. The map reference point is at 41.5549, -90.616.
- State / territory
- Illinois
- Recorded place name
- Rock Island
- County association
- Rock Island
- Estimated coordinate
- 41.5549, -90.616
View on OpenStreetMap - ZIP prefix
- 612 · 47 ZIP codes share it
- Data source
- GeoNames postal reference, snapshot September 26, 2026
GeoNames reference data. County associations may not include every intersecting county, place names are postal names rather than legal boundaries, and coordinates are approximate. This is not address validation.
Need the last four digits?
ZIP+4 depends on the full delivery address. A five-digit code alone cannot determine its extension.
Find ZIP+4Explore Illinois
Browse the other 1,574 ZIP codes recorded for Illinois, sorted by code with place and county.
Illinois directoryOther ZIP codes in Rock Island, IL
Rock Island has 3 ZIP codes in the reference dataset.
Nearby ZIP code reference points
| ZIP code | Place | State | County association | Miles |
|---|---|---|---|---|
| 52804 | Davenport | IA | Scott | 1.2 |
| 52806 | Davenport | IA | Scott | 1.4 |
| 52802 | Davenport | IA | Scott | 2.7 |
| 52803 | Davenport | IA | Scott | 3.0 |
| 52801 | Davenport | IA | Scott | 3.2 |
| 52807 | Davenport | IA | Scott | 3.9 |
| 52805 | Davenport | IA | Scott | 4.0 |
| 52808 | Davenport | IA | Scott | 4.0 |
Straight-line distance between reference points. Nearby points do not prove that ZIP areas touch.
Verify a mailing address
For mailing, confirm the complete street or PO Box address with USPS. A place record does not confirm delivery eligibility or the ZIP+4 extension.
Open USPS address lookup