- City of San Marcos, Texas Chamber of Commerce - Official site includes information on tourism, lodging, restaurants, businesses, economic development, and the community.
- Guide to San Marcos Texas - A guide to San Marcos, Texas music, events, and people.
- San Marcos Panthers Homeschool Basketball - History and photographs of recent teams in action.
- San Marcos, TX Information - Community site includes information on businesses, library, news, and local events in the city. Includes links.
- San Marcos Hispanic Chamber of Commerce - An informational page by the San Marcos, Texas Hispanic Chamber of Commerce.
