In 2026, there is generally no upper age limit for staying at YHA (Youth Hostels Association) hostels; they are open to travelers of all ages. The name "Youth" is a historical legacy rather than a modern restriction. However, there are minimum age requirements for safety: children under 16 must be accompanied by an adult (18+) and must stay in a private room rather than a shared dormitory. For 16 and 17-year-olds, solo travel is permitted in certain YHA locations provided they have a parental consent form and book a private room. Some specific "YHA-affiliated" groups or international partner hostels in countries like India or Germany may still prioritize travelers aged 18–35 for their fully-funded fellowship programs or specific social events, but for standard bookings, you will find a diverse mix of backpackers, families, and retirees in most YHA common rooms worldwide.