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Swine Validation for the McMullen County Livestock Show & Major Shows...
McMullen County ISD
901 River St. (physical address)
PO Box 359 (mailing)
Tilden, Texas 78072-0359
Regular Hours:
Mon – Fri, 7:30 AM – 4:00 PM
Summer Hours:
Mon – Thur, 7:00 AM – 5:00 PM
 (361) 274-2000