City of Sidney


Directory area code and prefix available at City of Sidney

Directory Numbers

In the United States and Canada, telephone numbers are typically 10 digits long and are structured as follows:

  • (Area Code) + (Prefix) + (Line Number)
  • Area Code:

    This is a three-digit number that represents a specific geographic region. Some area codes cover entire states or provinces, while others cover smaller regions, particularly in more densely populated areas.

    Prefix (Central Office Code):

    The prefix, or central office code, is the three-digit number that comes after the area code. It narrows down the location further and can sometimes identify a specific town or city, though mobile phone prefixes are not tied to specific geographic regions anymore.

  • County: Champaign 217-688
  • County: Cheyenne 308-250
  • County: Cheyenne 308-524
  • County: Cheyenne 308-255
  • County: Cheyenne 308-207
  • County: Cheyenne 308-523
  • County: Cheyenne 308-522
  • County: Cheyenne 308-629
  • County: Cheyenne 308-254
  • County: Richland 406-569
  • County: Richland 406-433
  • County: Richland 406-482
  • County: Richland 406-488
  • County: Richland 406-798
  • County: Delaware 607-561
  • County: Delaware 607-563
  • County: Richland 701-481
  • County: Richland 701-565
  • County: Fremont 712-374
  • County: Shelby 937-494
  • County: Shelby 937-493
  • County: Shelby 937-498
  • County: Shelby 937-497
  • County: Shelby 937-492
  • County: Cheyenne 970-253
  • County: Montcalm 989-675
  • County: Montcalm 989-328
  • County: Not Available 250-657
  • County: Not Available 250-665
  • County: Not Available 250-654
  • County: Not Available 250-655
  • County: Not Available 250-656