It is important to know that it will be no longer possible to send form notifications to an email address that is not a HubSpot user. This is what HubSpot describes:
Historically, HubSpot Forms have allowed you to set recipients for form submission notification as any email address, regardless of whether that email address was a user in that HubSpot portal. As of July 12, 2022, in order to receive these notifications, an email address must also be a user in the HubSpot portal the notification is from.
That being said, you can use a workflow where you use an if/then branch based on your location property and send the notification through your workflow: