100 Smallest ZIP Codes in the United States by Population in Rock Island County, Illinois
Explore the 100 smallest ZIP codes in the United States ranked by population using U.S. Census demographic data. This page lists ZIP codes located in Rock Island County, Illinois.
| Rank | ZIP Code | City | State | Population |
|---|---|---|---|---|
| 1 | 61236 | BARSTOW | IL | 65 |
| 2 | 61278 | RAPIDS CITY | IL | 657 |
| 3 | 61257 | HILLSDALE | IL | 836 |
| 4 | 61279 | REYNOLDS | IL | 944 |
| 5 | 61242 | CORDOVA | IL | 1,136 |
| 6 | 61239 | CARBON CLIFF | IL | 1,174 |
| 7 | 61259 | ILLINOIS CITY | IL | 1,379 |
| 8 | 61232 | ANDALUSIA | IL | 1,506 |
| 9 | 61284 | TAYLOR RIDGE | IL | 1,745 |
| 10 | 61256 | HAMPTON | IL | 2,063 |
| 11 | 61275 | PORT BYRON | IL | 4,393 |
| 12 | 61240 | COAL VALLEY | IL | 5,880 |
| 13 | 61282 | SILVIS | IL | 8,234 |
| 14 | 61264 | MILAN | IL | 9,927 |
| 15 | 61244 | EAST MOLINE | IL | 23,239 |
| 16 | 61201 | ROCK ISLAND | IL | 37,838 |
| 17 | 61265 | MOLINE | IL | 44,006 |