Area Codes
| 975 | Missouri This area code is scheduled to provide numbering relief to code 816 but no date has been assigned for this to go into effect. | More information at: Area Code 975 Phone Number Blocks
| 975 | Missouri This area code is scheduled to provide numbering relief to code 816 but no date has been assigned for this to go into effect. | More information at: Area Code 975 Phone Number Blocks