Illinois Quad Cities to add area code; but don’t expect to see it soon

The 309 area code, which includes Mercer, Henry, and Rock Island counties in the Quad Cities, will one day have a second area code: 861.
The Quad Cities will have a new area code to add to the bistate region’s 309 and 563 mix thanks to an “area code overlay” coming to northwestern and north central Illinois.  The Illinois-only “861” area code will one day join the region’s 309 area code, but it will not impact users’ current phone numbers, […]
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