Compare 78666 internet speeds to the national average
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Download Speeds
San Marcos – 150.0 Mbps
TX – 152.0 Mbps
U.S. – 133.0 Mbps
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Upload Speeds
San Marcos – 94.0 Mbps
TX – 67.0 Mbps
U.S. – 46.0 Mbps
*Data sourced from M-LAB speed tests taken by real users in San Marcos.