1. Start with the Ardmore service area, not a population forecast
Ardmore is associated with Delaware County and Montgomery County in Pennsylvania. A firm serving Ardmore may therefore need to decide how its answering experience describes geographic coverage: Ardmore itself, one or both listed counties, Pennsylvania generally, or another scope the firm actually serves.
Recommended approach
Bring your actual service-area boundaries to the review. Decide which locations the answering system should recognize, which matters should be accepted, and which callers should be routed for review.
