2026 Compare Cities Overview:
San Marcos, TX vs Decatur, IL

Are people in Decatur older or younger than people in San Marcos?
- The Median Age in Decatur is 15.0 years older than in San Marcos.

Are housing costs cheaper in Decatur or San Marcos?
- Decatur housing costs are 75.1% less expensive than San Marcos housing costs.

Which city has a longer commute, Decatur or San Marcos?
- The average commute for residents of Decatur is 5.6 minutes shorter 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 Decatur?
Decatur, Illinois is a vibrant city located in the Midwestern United States. Home to attractions such as Scovill Zoo and Nelson Park, visitors can enjoy outdoor activities and nature when visiting Decatur. There are also plenty of museums, galleries, and performance venues such as Macon County History Museum and Richland Community College Performance Center. For entertainment, visitors can explore downtown shopping districts and restaurants along with movie theaters and live music clubs. Whether you're looking for a peaceful retreat or an exciting night out, Decatur has something for everyone!