Our Dallas client was adamant that they “drew” from an enormous distance. And, in truth, they did however when you add it all up and look at the annual attendance for the year, the vast majority of attendance came from a 30 minute drive time.
The below map shows the attendance by zip code overlayed with drive-time zones of 30 minutes, 60 minutes and 90 minutes. The cost for purchasing mass-media, to reach the outer areas, was definitely not worth the return on investment!
Attendance by zip code
If you’re new to GIS analysis, I recommend the following book as good intro.
Here’s a great book to get ideas on conveying data visually