Rock Island County, Illinois ZIP codes
20 ZIP codes are in Rock Island County, plus 4 that cross in from neighboring counties. It's part of the Davenport-Moline-Rock Island, IA-IL metro area.
- ZIP codes
- 20
- Population in these ZIPs
- 143,264
- Avg. median income
- $69,400population-weighted
- Cities & towns
- 17
Click anywhere on the map to see which ZIP code it's in.
ZIP codes in Rock Island County
| ZIP code | City | Population | Median income | Typical home value |
|---|---|---|---|---|
| 61201 | Rock Island | 36,766 | $59,396 | $124,200 |
| 61204 PO Box | Rock Island | — | — | — |
| 61232 | Andalusia | 1,469 | $73,971 | $207,300 |
| 61236 | Barstow | 34 | $77,813 | $159,400 |
| 61237 | Buffalo Prairie | 0 | — | — |
| 61239 | Carbon Cliff | 1,189 | $32,177 | $124,200 |
| 61240 | Coal Valley | 5,795 | $113,220 | $273,600 |
| 61242 | Cordova | 1,135 | $104,219 | $231,100 |
| 61244 | East Moline | 23,308 | $63,819 | $150,000 |
| 61256 | Hampton | 1,926 | $90,406 | $209,100 |
| 61257 | Hillsdale | 844 | $64,107 | $164,200 |
| 61259 | Illinois City | 1,053 | $91,458 | $278,700 |
| 61264 | Milan | 10,073 | $78,068 | $189,300 |
| 61265 | Moline | 43,748 | $66,933 | $150,200 |
| 61266 PO Box | Moline | — | — | — |
| 61275 | Port Byron | 4,253 | $108,438 | $305,400 |
| 61278 | Rapids City | 678 | $69,938 | $219,000 |
| 61282 | Silvis | 8,394 | $64,398 | $164,800 |
| 61284 | Taylor Ridge | 2,599 | $100,505 | $272,200 |
| 61299 PO Box | Rock Island | — | — | — |
ZIP codes partly in Rock Island County
These ZIP codes are mostly in a neighboring county but cover part of Rock Island County.
| ZIP code | City | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|
| 61272 | New Boston | Mercer County | 1,437 | $64,167 | $148,600 |
| 61273 | Orion | Henry County | 3,120 | $99,032 | $224,900 |
| 61279 | Reynolds | Mercer County | 1,015 | $87,656 | $203,200 |
| 61281 | Sherrard | Mercer County | 2,520 | $102,639 | $255,800 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities and towns in Rock Island County
Nearby counties
Frequently asked questions
How many ZIP codes are in Rock Island County, Illinois?
20 ZIP codes are mainly in Rock Island County, and 4 more ZIP codes from neighboring areas reach partly into it.
What cities are in Rock Island County?
ZIP codes in Rock Island County use the city names Andalusia, Barstow, Buffalo Prairie, Carbon Cliff, Coal Valley, Cordova, East Moline, Hampton, Hillsdale, Illinois City, Milan and Moline and others.
What metro area is Rock Island County in?
Rock Island County is part of the Davenport-Moline-Rock Island, IA-IL metropolitan statistical area.