707 E. College St. Seguin, Texas 78155 Phone: (830) 401-2422 Fax: (830) 401-2477 If you would like to leave a legacy to the Seguin community, The Public Library Foundation offers you the opportunity. Welcome to the web site of the Seguin-Guadalupe County Public Library. The Library is a department of the City of Seguin. LIBRARY HOURS Monday-Thursday 9:00 a.m. - 9:00 p.m. Friday & Saturday 9:00 a.