Rock Island County, IL ZIP codes
There are 20 ZIP codes in Rock Island County, IL, in 17 towns, from 61201 to 61299. The largest are 61265 (Moline), 61201 (Rock Island) and 61244 (East Moline).
The county seat is Rock Island.
- ZIP codes
- 20
- Towns
- 17
- County seat
- Rock Island
- County FIPS
17161- State
- Illinois
- Population
- 142,757
- Median household income
- $67,159
- Land area
- 427 sq mi
- Metro area
- Davenport-Moline-Rock Island
Rock Island County ZIP codes by town
- Rock Island (county seat)
- 61201, 61204, 61299
Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.
Map of Rock Island County ZIP codes
The ZIP codes of Rock Island County, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.
Rock Island County in numbers
About 142,757 people live in Rock Island County, in 61,733 households, the 14th most populous of Illinois's 102 counties. The median household income is $67,159 a year, 19% below the Illinois median of $83,390 (US: $80,734). The median owner-occupied home is valued at $150,400 (43% below the Illinois median), and median gross rent is $889 a month. The median age is 40.3; 24.7% of adults 25 and over hold a bachelor's degree or higher (37.8% across Illinois); the average commute takes 20 minutes.
| Population | 142,757 |
|---|---|
| Households | 61,733 |
| Median age | 40.3 |
| Median household income | $67,159 |
| Median home value | $150,400 |
| Median gross rent | $889 |
| Bachelor's degree or higher | 24.7% |
| Mean commute | 19.7 min |
| Population density | 334 / sq mi |
U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates. Survey estimates carry margins of error, wider for small places. Sources and methods.
Largest towns in Rock Island County
| Town | ZIP codes | Population |
|---|---|---|
| Moline | 2 | 42,197 |
| Rock Island | 3 | 36,151 |
| East Moline | 1 | 20,904 |
| Silvis | 1 | 7,955 |
| Milan | 1 | 5,034 |
| Coal Valley | 1 | 4,229 |
| Carbon Cliff | 1 | 2,151 |
| Hampton | 1 | 1,926 |
| Port Byron | 1 | 1,854 |
| Andalusia | 1 | 1,021 |
| Rapids City | 1 | 980 |
| Cordova | 1 | 666 |
| Hillsdale | 1 | 451 |
| Taylor Ridge | 1 | 276 |
| Illinois City | 1 | 73 |
Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.
Neighbouring counties
Counties that share a ZIP code with Rock Island County.
Not sure you are in Rock Island County? What county am I in? answers from your location, near a county line included.
Every ZIP code in Rock Island County, with figures
| ZIP | City | Type | Population | Median income | Median home |
|---|---|---|---|---|---|
61201 | Rock Island , IL | Standard | 36,766 | $59,396 | $125,600 |
61204 | Rock Island , IL | No street area | — | — | — |
61232 | Andalusia , IL | Standard | 1,469 | $73,971 | $186,100 |
61236 | Barstow , IL | Standard | 34 | $77,813 | $159,400 |
61237 | Buffalo Prairie , IL | Standard | 0 | — | — |
61239 | Carbon Cliff , IL | Standard | 1,189 | $32,177 | $99,400 |
61240 | Coal Valley , IL | Standard | 5,795 | $113,220 | $237,000 |
61242 | Cordova , IL | Standard | 1,135 | $104,219 | $218,100 |
61244 | East Moline , IL | Standard | 23,308 | $63,819 | $139,400 |
61256 | Hampton , IL | Standard | 1,926 | $90,406 | $184,900 |
61257 | Hillsdale , IL | Standard | 844 | $64,107 | $117,200 |
61259 | Illinois City , IL | Standard | 1,053 | $91,458 | $201,100 |
61264 | Milan , IL | Standard | 10,073 | $78,068 | $153,300 |
61265 | Moline , IL | Standard | 43,748 | $66,933 | $147,000 |
61266 | Moline , IL | No street area | — | — | — |
61275 | Port Byron , IL | Standard | 4,253 | $108,438 | $245,700 |
61278 | Rapids City , IL | Standard | 678 | $69,938 | $219,000 |
61282 | Silvis , IL | Standard | 8,394 | $64,398 | $160,100 |
61284 | Taylor Ridge , IL | Standard | 2,599 | $100,505 | $236,900 |
61299 | Rock Island , IL | No street area | — | — | — |
Cite this page
zipcodes.pro. “Rock Island County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/il/county/rock-island
Underlying data is public domain or openly licensed — sources, vintages and licences.