Navigate Here: Utilities > Dropdown List Management > Districts; and click the Add icon 
You can add a district on the Add District page.
To add a district, fill in the following fields:
The required fields are noted with an asterisk (*).
District ID*: The ID of the district and it must be unique.
District Name*: The name of the district and it must be unique.
Notes: Descriptions of the district.
Click the Save button to add the new district. The system will then go to the Browse Districts page.
Click the Reset button to clear the latest inputs.