Several resources from OU Libraries and the open web will allow you to research basic information about your target population.
I recommend starting with Demographics Now--here is a video (11:21) introducing how to use it for demographic information.
If you'd like more help, contact me any time!
Marketing Information--Books
Using OneSearch, you can find books which detail how to market to specific groups: families, teens, etc.
Marketing Information--Journal Articles
Using these databases, you can search for information on how others have marketed to your target audience.
Pure Michigan
Many industries in Michigan have their own websites or related professional organizations, and these will often have valuable reports on who their customers are and what profits are, etc. One good example is the website of the Michigan Wine industry. Look for "About" or "Media" pages--they'll typically have fast facts and other data that you can use.
Michigan Museums Association
Michigan Recreation & Park Association
Charity Navigator--budget information, etc. for registered non-profit organizations
Don't be afraid to contact staff from an organization! Non-profits keep careful statistics on their attendance, funding, and other valuable information, and are often more than happy to share it.
OU Libraries has a list of citation tools for your reference. If you have any questions, feel free to email me or contact the Writing Center for more help!
Citing Demographics Now
Examples of APA style, courtesy The Bentley Library:
DemographicsNow. (2012). Boston, MA demographic detail summary [Data]. Retrieved June 21, 2012, from DemographicsNow database.
DemographicsNow. (2012). Boston, MA and San Francisco household comparison [Data]. Retrieved May 1, 2012, from DemographicsNow database.
DemographicsNow. (2012). Whole Foods [Company profile]. Retrieved June 17 2012, from DemographicsNow database.
DemographicsNow. (2012). Custom business search, NAICS Code 447 (gasoline stations) in Middlesex County, MA [Data]. Retrieved June 21, 2012, from DemographicsNow database.
Experian Marketing Services. (n.d.). Type G25: Urban edge. Mosaic USA. Retrieved March 26, 2015, from DemographicsNow database.