Nevermind... it looks like you can do it at the country level alone... To create a region: 1. Go to Setup > Company > Regions. 2. Enter a name to identify the region. 3. In the Region subtab, define the region by adding countries, states, or postal codes to the region detail entry. (Your place of business might use provinces or counties instead of states.) You must add at least one entry. To create a region at state level or postal code level, first select the country and then specify the state or postal code. To specify a single postal code, enter it in the Zip Code Start field. The same code is copied automatically to the Zip Code End field. To specify a range of postal codes, change the value in the Zip Code End field to the last value in the range. 4. Click Save.