Best San Dimas (CA) Hotels With 18+ Check-In (Updated February 2026)

Welcome to San Dimas, California - a hidden gem nestled in the heart of the San Gabriel Valley.

San Dimas is a vibrant blend of history, culture, and outdoor adventure, making it an irresistible stop for young travelers aged 18 and above. The city is renowned for its historical downtown area, which is brimming with unique shops, delicious dining spots, and vintage architecture.

For the adventure seekers, San Dimas offers a multitude of outdoor activities, including hiking, water sports, and cycling. The city's proximity to the beautiful San Gabriel Mountains and the Frank G. Bonelli Regional Park means there is always a trail to conquer or a sunset to chase.

Whether you're a history enthusiast, a foodie, or an adrenaline junkie, San Dimas has something for everyone.

Below is a list of hotels and motels in San Dimas that allow reservations for guests under 21, including those aged 18, 19, and 20. From cheap options to more adult-focused accommodations, there's a variety of places to rent that fit your needs and preferences!

Please note that hotel policies regarding the minimum check-in age in San Dimas can change at any time. While we aim to keep our information updated, we recommend confirming the minimum age requirement with the hotel or motel before making a reservation.