An advertising area should fit the service the business can actually deliver. A map alone does not establish whether enquiries from that area can be handled reliably and economically.
A mobile repair business may define its coverage by travel time. An event organizer may also want to reach people planning a future visit. Both can advertise the same city while having different reasons for selecting it. Start by writing down who should use the service and where that service will take place.
Turn coverage into an understandable rule
For the repair business, the rule might be that jobs are accepted within specified postal areas, with travel checked before accepting work beyond them. Explain that boundary on the destination page too. Campaign settings cannot replace guidance for visitors who reach the site from outside the intended area.
A radius is convenient but does not account for rivers, transport links or national borders. Examine several places near the edge. A location that looks close on a map may involve a long journey, requiring a revised selection or a clearly explained limitation. Conversely, a well-connected neighboring town may be worth including even if it falls outside the initial circle.
Distinguish presence from interest
Google's geographic targeting explanation discusses location signals and location interest. These signals do not provide infallible knowledge of someone's physical whereabouts. Inspect the options available for the actual campaign type instead of assuming a default means “only people currently here”.
A locally delivered emergency service may need a different approach from a hotel seeking future visitors. The choice follows the business situation. A universal instruction to target either as broadly or as narrowly as possible would ignore that distinction.
Use enquiries as feedback
Collect the location information necessary to assess the work as part of the ordinary enquiry process. A town or postal code may be enough initially; do not request a full street address merely out of habit. Compare unsuitable enquiries with both the destination-page explanation and the campaign settings.
Repeated enquiries from outside the area may indicate unclear copy, an unsuitable location option or a different pattern of demand. One enquiry does not establish a particular technical failure. Look for patterns before making a major change to the selected area.
When coverage changes seasonally, update advertising and the page together. If the company serves a smaller area during certain months, both places should explain that. Record the applicable coverage rule and the date of the change so later reviews can account for the different operating conditions.
