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Rankings of tall buildings
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| Floors | 4 Source: Visual check from a satellite photo |
| Completion | 1898 |
| Last Renovation | 1905 |
| Structural Form | low-rise building |
| Main Usage | government office |
| Status | existing |
| Architectural Style | neo-renaissance |
| Address | 1504 3rd Avenue |
| Smart Address | 1500–1514 3rd Avenue |
| Smart Address | 301–315 15th Street |
| City | Rock Island, IL |
| Country |  United States |
