Most toddlers walk independently or with assistance between 11 and 16 months. Late walking is between 18 and 20 months and beyond. It's important to note when your child meets their other developmental milestones. If they started sitting independently later than average, it goes to reason that walking will also be late. Your pediatrician will want to investigate further if your child met their other milestones at the traditional timing and if there's a significant gap between those and walking, especially after 20 months.