After you research the consumer market for your sport, team, company, or product, you will want to adapt that data down to the local level. The resources below can help you find information about your local market to combine with national consumer market and fan trends.
As an example, you could use SimplyAnalytics to find data by zip code on the percentage of people in Columbus, Ohio, who are very interested in watching NFL games, while also showing the location of Applebees restaurants in the area.
My Simply Analytics Guide walks you through the process of analyzing the consumer demand in a region.
This video demonstrates how to find the percentage of people in a particular area who are interested (or not) in watching or attending professional sports. This video uses the NFL as an example but the same search can be performed for a variety of other variables. Note that the interface to SimplyAnalytics has changed somewhat since filming.