The state title was the third-straight for Ankeny and the eighth in the school's history.
Ankeny established control early, leading 20-11 at the end of the first quarter. The Hawkette controlled the glass, outrebounding the Maroons, 31-14, while shooting 58..8 percent from the field. Voss was seven-of-seven from the field while Mary Beth Biga scored nine points with 10 rebounds and six assists.
Dowling Catholic was led by Ally Thrall's 14 points.
Ankeny ends its season at 26-1 while Dowling Catholic finishes the year at 20-6.
Ankeny (26-1) 20 10 15 10 -- 55
Dowling Catholic (20-6) 11 10 9 11 -- 41