@artist03 - There is NO specific GPA that will guarantee admission into the UMD Honors College.
Please read the following thread from @maryversity
The Honors College has their own Admission Committee and their evaluation is holistic. All parts of your application are evaluated by them.
Also, you MUST apply by the Priority deadline (November 1) to be considered for admission into Honors or Scholars. That same deadline also applies to being considered for Merit Scholarships.
To give you a specific answer, most Honor College students have an unweighted GPA of 4.0 and an SAT score of 1450+ (M + CR, on the old SAT). But STATS alone will NOT get you into the Honors College.
Good Luck!