Does it make a difference whether I list College Park or Berwyn Heights on my Legal Documents?

Yes it most certainly does. Although residents of Berwyn Heights use a College Park zip code, they DO NOT reside in College Park. Placing "College Park" on legal documents, such as your Driver's License, causes the county to send your municipal tax dollars to the WRONG city. You pay municipal taxes for specialized municipal services, so make sure your taxes are going to YOUR municipality, not someone else's!