Zip Area Code

Port Byron, Illinois

Port Byron, Illinois, in Rock Island County, has ZIP code 61275 and area code 309, with 861 as an overlay.

ZIP code
61275
Area codes
309, 861
Time zone
Central Time
Coordinates
41.6013, -90.3263

ZIP codes in Port Byron

ZIP codePost officeCountyArea codes
61275Port ByronRock Island County309, 861

Area codes for Port Byron

  • 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.

Area codes here are matched from telephone rate centers, so a place near a boundary can have local numbers from either side of it.

Time zone

Port Byron is in the Central Time zone.

Towns near Port Byron