CHILD SUPPORT OFFICE 515 N. 51st Avenue, Suite 120 Phoenix, AZ 85043 (602) 252-4045 Hours 8 a.m. – 5 p.m. Child Support Office Directions From Down Town Phoenix, AZ   Head west on W Washington St toward N 1st Ave Turn right onto N 7th Ave Turn left to merge onto I-10 W toward Los Angeles … Continue reading Phoenix AZ Child Support Office – 515 N. 51st Avenue