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

Are people in San Marcos older or younger than people in Decatur?
- The Median Age in San Marcos is 13.7 years younger than in Decatur.

Are housing costs cheaper in San Marcos or Decatur?
- San Marcos housing costs are 43.1% less expensive than Decatur housing costs.

Which city has a longer commute, San Marcos or Decatur?
- The average commute for residents of San Marcos is 4.6 minutes shorter than it is for residents of Decatur.

Things to do in Decatur?
Decatur, Georgia is located in DeKalb County and serves as the county seat for both DeKalb County and Fulton County. It has a population close to 20,500 individuals living within it’s 14 square miles area. Some notable attractions include Stone Mountain Park and Emory University’s main campus, both located about 20 minutes away by car from Decatur's downtown area.

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.