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Area codes 309 and 861

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Area codes 309 and 861 are area codes in Illinois. It was created as a split from 815 in 1957. It covers towns such as Bloomington, Rock Island, Galesburg, East Moline, East Peoria, Canton, and Morton. It was overlaid by 861 on February 24, 2023.[1][2]

  1. https://www2.illinois.gov/IISNews/24203-ICC_Announces_New_861_Area_Code_for_309_Region.pdf
  2. "Archived copy" (PDF). Archived from the original (PDF) on 2022-10-04. Retrieved 2022-03-21.{{cite web}}: CS1 maint: archived copy as title (link)