ZIP codes
17
Rock Island County, IL Demographics & ZIP Codes
Rock Island County, Illinois demographics and median household income by ZIP code — 17 ZIP codes — population 143,574 — avg. income $77,483 — avg. home value $170,819. Compare income, housing, and ZIP-level data on US5.
Population
143,574
Median household income (avg.)
$77,483
103% of U.S. median
Average home value
$170,819
49% of U.S. median
Average rent
$750
64% of U.S. median
Rock Island County demographics
Rock Island County, Illinois covers 17 ZIP codes, with a combined ZIP-area population of about 143,574.
Median household income in Rock Island County
The average median household income across ZIP codes in Rock Island County, Illinois is about $77,483 — about even with the IL ZIP average ($78,143), and about 3% above the U.S. median ($75,149).
Among ZIPs with income data, 61240 (Coal Valley) is near the top at about $108,929, while 61239 (Carbon Cliff) is near the bottom at about $33,523.
Housing in Rock Island County
For housing in Rock Island County, Illinois, the average median home value is about $170,819 and the average median rent is about $750.
The most populous ZIP is 61265 (Moline) with about 43,851 residents. Use the table below to compare ZIP codes across the county.
ZIP codes in Rock Island County
Sort by population, income, or home value. Click a column header to toggle ascending / descending.
| ZIP | City | County | State | Population ↓ | Income | Home value |
|---|---|---|---|---|---|---|
| 61265 | Moline | Rock Island County | IL | 43,851 | $63,910 | $142,300 |
| 61201 | Rock Island | Rock Island County | IL | 37,294 | $57,260 | $118,300 |
| 61244 | East Moline | Rock Island County | IL | 23,288 | $66,827 | $140,600 |
| 61264 | Milan | Rock Island County | IL | 10,056 | $78,285 | $147,700 |
| 61282 | Silvis | Rock Island County | IL | 8,345 | $67,833 | $159,400 |
| 61240 | Coal Valley | Rock Island County | IL | 5,988 | $108,929 | $231,000 |
| 61275 | Port Byron | Rock Island County | IL | 4,226 | $99,583 | $235,800 |
| 61284 | Taylor Ridge | Rock Island County | IL | 2,122 | $98,491 | $222,800 |
| 61256 | Hampton | Rock Island County | IL | 1,946 | $86,679 | $182,800 |
| 61232 | Andalusia | Rock Island County | IL | 1,498 | $71,806 | $174,600 |
| 61239 | Carbon Cliff | Rock Island County | IL | 1,138 | $33,523 | $102,600 |
| 61242 | Cordova | Rock Island County | IL | 1,135 | $95,804 | $218,600 |
| 61259 | Illinois City | Rock Island County | IL | 1,107 | $88,550 | $198,900 |
| 61257 | Joslin | Rock Island County | IL | 866 | $62,000 | $116,300 |
| 61278 | Rapids City | Rock Island County | IL | 671 | $84,000 | $222,600 |
| 61236 | Barstow | Rock Island County | IL | 43 | $76,250 | $118,800 |
| 61237 | Buffalo Prairie | Rock Island County | IL | — | — | — |
Frequently asked questions
What are the demographics of Rock Island County?
Rock Island County, Illinois has a combined ZIP-area population of about 143,574 across 17 ZIP codes. Browse the ZIP table for population, income, and housing by code.
What is the median household income in Rock Island County?
The average median household income across ZIP codes in Rock Island County, Illinois is about $77,483, roughly in line with the state ZIP average ($78,143), and about 3% above the U.S. median ($75,149). Average median home value is about $170,819. Among ZIPs with data, 61240 (Coal Valley) is near the top ($108,929) and 61239 (Carbon Cliff) is near the bottom ($33,523).
How many ZIP codes are in Rock Island County?
Rock Island County, Illinois includes 17 ZIP codes on US5. Each row links to demographics, median income, and housing for that code.
Where can I find ZIP code demographics for Rock Island County?
This page lists ZIP codes in Rock Island County, Illinois with population, median household income, and home value. Select a ZIP for a full demographics profile.