Zip Area Code

Joslin, Illinois

No ZIP code carries the name of Joslin, Illinois, in Rock Island County; the nearest ZIP code is 61257, in area code 309, with 861 as an overlay.

Nearest ZIP
61257
Area codes
309, 861
Time zone
Central Time
Coordinates
41.5446, -90.2219

Nearest ZIP codes to Joslin

This is the ZIP code nearest to Joslin, each listed with the post office it is named after.

ZIP codePost officeCountyArea codes
61257HillsdaleRock Island County309, 861

Area codes for Joslin

  • 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

Joslin is in the Central Time zone.

Towns near Joslin