2026 Compare Cities Overview:
San Marcos, TX vs Castro Valley, CA

Are people in Castro Valley older or younger than people in San Marcos?
- The Median Age in Castro Valley is 17.5 years older than in San Marcos.

Are housing costs cheaper in Castro Valley or San Marcos?
- Castro Valley housing costs are 212.7% more expensive than San Marcos housing costs.

Which city has a longer commute, Castro Valley or San Marcos?
- The average commute for residents of Castro Valley is 12.1 minutes longer than it is for residents of San Marcos.

Things to do in San Marcos?
San Marcos, Texas is a vibrant city located in the heart of Hays County. This welcoming community offers plenty for visitors to explore such as the Wonder World Cave or one of many popular restaurants. Residents here also take advantage of all the outdoor activities available at Rio Vista Park, Aquarena Springs and Purgatory Creek Natural Area. With its excellent school systems, thriving businesses, and numerous recreational opportunities it's no wonder why so many people choose to make San Marcos their home.

Things to do in Castro Valley?
Castro Valley, California is a thriving community located in the heart of Alameda County. This vibrant city offers plenty for visitors to explore such as historic Redwood Canyon or one of many popular restaurants. Residents here also take advantage of all the outdoor activities available at Lake Chabot Regional Park, Cull Canyon Regional Park, and Castro Valley Community Park. With its excellent school systems, thriving businesses, and numerous recreational opportunities, it's no wonder why so many people choose to make Castro Valley their home.