San Marcos, part of Austin or SA

[sananto]

I just wonder why San Marcos is included in the Austin Metro area instead of SA. Is it because Hays County borders Travis and not SA? Looking at today's newspaper is a section about higher education in the San Antonio area and there you will find Texas State University and its commitment to San Antonio. Also you wonder why San Marcos High School is in districts with San Antonio high schools instead of Austin. It seems to me that San Marcos has more in common with SA than Austin. Also while at it, I see also included in the section is Schreiner Institute of Kerrville. Do you think Kerr County will ever be added to the SA metro area? If Hays was part of the SA metro area, that would place SA just below the Pittsburgh metro area.