Mercer County, Illinois

Mercer County, Illinois, has 19 towns and 13 ZIP codes, in area code 309, with 861 as an overlay.

Towns in Mercer County, A to Z

Town	ZIP codes	Area codes
Aledo	61231	309, 861
Alexis	61412	309, 861
Cable	nearest61263, 61276, 61281	309, 861
Edgington	nearest61232, 61279, 61284	309, 861
Eliza	nearest61272	309, 861
Hamlet	nearest61279	309, 861
Joy	61260	309, 861
Keithsburg	61442	309, 861
Matherville	61263	309, 861
Millersburg	nearest61260	309, 861
New Boston	61272	309, 861
New Windsor	61465	309, 861
North Henderson	61466	309, 861
Preemption	61276	309, 861
Reynolds	61279	309, 861
Seaton	61476	309, 861
Sherrard	61281	309, 861
Swedona	nearest61262, 61281, 61468	309, 861
Viola	61486	309, 861

ZIP codes in Mercer County

61231Aledo309, 861
61260Joy309, 861
61263Matherville309, 861
61272New Boston309, 861
61276Preemption309, 861
61279Reynolds309, 861
61281Sherrard309, 861
61412Alexis309, 861
61442Keithsburg309, 861
61465New Windsor309, 861
61466North Henderson309, 861
61476Seaton309, 861
61486Viola309, 861

Area codes in Mercer County

Area code 309
In service since 1957. Shares its area with 861. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.
Area code 861
In service since February 24, 2023. Shares its area with 309. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.

Local numbers in area code 309

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