Hi Brad!
Thanks for bringing this question to the Disney Parks Moms Panel!
Yes, there are
lockers in
Magic Kingdom Park for storing your personal items. These multi-use, key-operated lockers can be opened and closed as often as you wish throughout the day. There are two locker sizes available. The large locker is 17.5 inches high by 12 inches wide and 16 inches deep. The small locker is 11 inches high by 9 inches wide and 16 inches deep.
Currently, the cost for the large locker is $10 per day, and the cost for the small locker is $8 per day. In addition, there is a $5 refundable deposit required for each locker key. Simply return your locker key no later than one hour after park closing and you will receive your deposit refund. I also want to mention that lockers are subject to availability on a first-come basis and that costs are subject to change.
I hope this helps with your planning, Brad. Please stop back and let me know if you have any other questions about your upcoming trip.
Wishing you magical memories!
Erin