2026 Compare Cities Overview:
Ontario, CA vs San Marcos, TX

Are people in San Marcos older or younger than people in Ontario?
- The Median Age in San Marcos is 7.7 years younger than in Ontario.

Are housing costs cheaper in San Marcos or Ontario?
- San Marcos housing costs are 42.2% less expensive than Ontario housing costs.

Which city has a longer commute, San Marcos or Ontario?
- The average commute for residents of San Marcos is 8.9 minutes shorter than it is for residents of Ontario.

Things to do in Ontario?
Ontario, California is a vibrant city located in the heart of San Bernardino County. The city offers plenty of attractions for both tourists and locals alike, including the Ontario Mills Mall which contains over 200 stores and restaurants. The Citizens Business Bank Arena is a popular venue for concerts, sporting events and more. There are many parks throughout the city including Central Park where visitors can enjoy a tranquil atmosphere with a lake or relax in the sunshine by one of its many picnic areas. With so much to do and see, Ontario is an excellent choice for any visitor looking to explore all that California has to offer!

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.