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Johnson County Area Codes

About Johnson County Area Codes

The county of Johnson County, located in Iowa, is served by 1 telephone area code(s) in this dataset. These calling codes cover cities, suburbs, and unincorporated communities across the county.

Major phone area codes used in Johnson County include 319. The county mainly follows the America/Chicago time zone.

Cities and towns served by these area codes in Johnson County include Iowa City.

List of Area Codes in Johnson County, Iowa

The table below lists all telephone area codes used in Johnson County, Iowa, along with their associated cities and time zones from this dataset.


S.N. Area Code Cities Time Zone(s)
1 319 Iowa City America/Chicago


Related Area Code Pages

Explore related area code resources on Burning Compass:

  • All area codes in Iowa
  • Individual area code details are available from the table above.

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